Showing posts with label cla. Show all posts
Showing posts with label cla. Show all posts
Friday, February 20, 2015
2014 Mercedes Benz CLA 45 AMG
Mercedes-AMG kicks off the automotive spring of 2013 in the "Big Apple" in dynamic style as the CLA 45 AMG celebrates its world premiere at the New York International Auto Show. The philosophy behind this four-door mid-series coupé matches that of the successful CLS 63 AMG, the trendsetter among four-door high-performance coupés. A glance at this high-tech package suffices to show that the CLS 45 AMG also has all the typical DNA to make it a perfect representative of the AMGs Driving Performance brand claim: with a peak output of 265 kW (360 hp) and maximum torque of 450 Newton metres, its turbocharged engine is not only the most powerful four-cylinder unit in series production anywhere in the world but also a highly efficient one that meets the EU6 emissions standard. With fuel consumption of 6.9 litres per 100 km according to NEDC combined figures, the CLA 45 AMG meets even the most exacting requirements. The performance-oriented AMG 4MATIC all-wheel drive of the CLA 45 AMG similarly sets a new benchmark in its competitive segment.
Ola Källenius, Chairman of Mercedes-AMG GmbH: "With the CLA 45 AMG, Mercedes-AMG is launching a unique and highly desirable automobile with all the typical DNA of AMG. A high-tech package that includes the most powerful series-production four-cylinder engine in the world as well as performance-oriented AMG 4MATIC all-wheel drive, it embodies Driving Performance at its best."
The new four-door high-performance coupé offers an exceptional combination of an excitingly sporty driving experience, extravagant design and exclusive individuality. With the CLA 45 AMG Mercedes-AMG is establishing a completely new segment – as it did previously with the CLS 63 AMG Shooting Brake (2012) and the CLS 55 AMG (2004). At the time of their launch, neither of these AMG models had any direct rivals, but went on to inspire other automotive manufacturers. Turbocharged engine, all-wheel drive and the AMG SPEEDSHIFT DCT 7-speed sports transmission - the CLA 45 AMG features the same drive system that is already powering the A 45 AMG to deliver highly dynamic and efficient performance.
Key figures at a glance:
Mercedes-Benz CLA 45 AMG | |
Displacement | 1991 cc |
Bore x stroke | 83.0 x 92.0 mm |
Compression ratio | 8.6 : 1 |
Output | 265 kW (360 hp) at 6000 rpm |
Max. torque | 450 Nm at 2250-5000 rpm |
Engine weight (dry) | 148 kg |
Maximum engine speed | 6700 rpm |
Power density | 133 kW (181 hp) |
Peak pressure | up to 140 bar |
Maximum charge pressure | 1.8 bar |
Fuel consumption NEDC combined | 6.9 – 7.1 l/100 km |
CO2 emissions | 161 - 165 g/km |
Efficiency class | C - D |
Emissions standard | EU6 |
Acceleration 0-100 km/h | 4.6 s |
Top speed | 250 km/h* |
*Electronically limited
Typically AMG: the most powerful series-production four-cylinder turbo engine in the world
A glance at the technical data for the CLA 45 AMG shows: the AMG 2.0-litre turbo engine, with a maximum output of 265 kW (360 hp) and up to 450 Newton metres of torque, is the most powerful turbocharged four-cylinder engine in series production anywhere in the world.
The combination of high performance and torque, together with the performance-oriented AMG 4MATIC all-wheel-drive system, gives the CLA 45 AMG driving characteristics almost on a par with those of a sports car. The performance coupé accelerates from zero to 100 km/h in 4.6 seconds and its top speed is 250 km/h (electronically limited). But the AMG 2.0-litre turbo engine is impressive not only in terms of its dynamic performance but also with regard to its efficiency and environmental compatibility. The CLA 45 AMG achieves a fuel consumption level of 6.9 litres per 100 kilometres according to NEDC combined figures, while it already meets the EU6 emissions standard that only comes into effect in 2015 as well as the limit for the particle count per kilometre of 6 × 1011 part./km that will become mandatory in 2017.
The basis for these impressive figures is provided by the high-tech package which has been put together by Mercedes-AMG. As a high-performance engine belonging to the BlueDIRECT family, the four-cylinder turbo engine features spray-guided direct petrol injection via piezo injectors positioned centrally in the four combustion chambers. The combination of multiple fuel injection and multiple spark ignition improves fuel utilisation and increases thermodynamic efficiency substantially, leading to lower exhaust emissions. Other highlights include the gravity-die sandcast all-aluminium crankcase, weight-optimised crank assembly with forged steel crankshaft and forged pistons with friction-optimised piston rings, NANOSLIDE cylinder wall technology, air-water charge air cooling, generator management and ECO start/stop function.
Twin-scroll turbochargers and AMG sports exhaust system with exhaust flap
Mercedes-AMG addresses the essential challenges concerning the response of small-displacement turbo engines by means of a twin-scroll turbocharger, maximum derestriction of the exhaust system and an innovative injection strategy. The twin-scroll technology provides for a more spontaneous build-up of charge pressure, making effective use of exhaust gas back pressure, exhaust gas temperature and exhaust gas impulse. This results in a swifter build-up of torque right from the lower rev range. As a positive side-effect, the twin-scroll technology also benefits fuel consumption and exhaust emissions. With a maximum charge pressure of 1.8 bar, the AMG 2.0-litre four-cylinder turbo engine leads the field in this respect, too.
The AMG sports exhaust system features large pipe cross-sections and an automatically controlled exhaust flap. This technology, which is familiar from the SLK 55 AMG, reconciles the two apparently conflicting aims of tangible dynamism and hallmark Mercedes comfort on long journeys. The flap is continuously adjusted by map control according to the power called up by the driver, load status and engine speed. The AMG sports exhaust system emits a fascinating, full engine sound that is particularly impressive during powerful acceleration.
An AMG Performance exhaust system with exhaust flap is available as an option for the A 45 AMG. This provides for an even more emotional and striking engine sound when the throttle is open and during gear shifting. The double-declutching function during downshifting and the interruption of ignition and injection during upshifting under full load produce a particularly throaty sound with the AMG Performance exhaust system and create a level of emotionality which is otherwise the preserve of engines with more than four cylinders.
High-performance cooling system with components from the SLS AMG
The high driving dynamics of the CLA 45 AMG call for a highly effective cooling system. On the basis of the components from the SLS AMG, a low-temperature circuit is additionally deployed for air-water charge air cooling of the four-cylinder turbo engine. The cooler extending across the complete front level of the cooling module is supplemented by an additional cooler in the wheel arch. Together with the charge air cooler, which is connected in series, a high-performance electric pump ensures the required flow through the water coolers located behind the large intake ports. This provides for ideal cooling of the highly compressed charge air, thereby contributing towards optimum engine performance.
The cooling of the transmission oil is integrated into the water cooling circuit for the engine. The water cooler positioned behind the front apron is supported by the heat exchanger which is fitted directly on the transmission and supplied with cooling water as required by means of an auxiliary pump.
"One man, one engine": a tradition of hand-built excellence
As is the case with all eight- and twelve-cylinder engines, the new AMG four-cylinder turbo engine is hand-built according to the traditional AMG philosophy of "one man, one engine". An exclusive assembly line has been set up for the new AMG engine at the Mercedes-Benz engine production plant in Kölleda – where all BlueDIRECT four-cylinder engines are built for the A- and B-Class models. A characteristic feature of the "one man, one engine" production process is the AMG engine plate bearing the signature of the responsible engine fitter. Apart from serving as an AMG hallmark confirming superlative production quality, the AMG engine plate also attests to the peerless DNA of Mercedes-Benzs high-performance brand.
AMG SPEEDSHIFT DCT 7-speed sports transmission
Dual clutch transmission and all-wheel drive – the drive package on board the new CLA 45 AMG is a demonstration of high-end engineering prowess. The AMG SPEEDSHIFT DCT 7-speed sports transmission is directly flange-mounted on the transversely installed engine. Key software modules have been adopted from the SLS AMG super sports car with its inspirational power transmission concept. The dual clutch transmission of the CLA 45 AMG features seven gears, three driving programmes, a double-declutching function and RACE START for optimum acceleration. The strengths of the AMG DCT sports transmission include spontaneous gear shifting without any interruption in tractive power, a tailor-made control strategy, extremely smooth and easy gear shifting and a high level of efficiency. Reinforced gear wheels provide for maximum stability. Synchroniser rings with carbon-fibre friction linings improve durability while also optimising the response time during manual gear-changing – the ideal basis for ambitious laps on cordoned-off race tracks.
"Momentary M mode" for even greater dynamism and driving enjoyment
Another special feature designed to enhance dynamic performance and driving enjoyment is the so-called "Momentary M mode". In C and S mode, this enables the driver to activate manual mode ("M") without having to remove a hand from the steering wheel, by pressing the "up" or "down" shift paddle once. In Momentary M mode the driver experiences the dynamism and performance of gear-shifting in manual mode in all the automatic driving programmes, with automatic up-shifting on meeting the rpm limit into the bargain. This allows the driver to devote his full attention to the vehicles impressive performance.
The shift times in manual mode "M" and in Sport mode "S" are similarly sporty in character to those of the SLS AMG GT super sports car. Briefly and precisely interrupting ignition and injection under full load leads to even faster gearshifts in "M" and "S", with a more emotional sound than ever. In "C" mode (Controlled Efficiency), tangibly soft transmission and engine characteristics support a fuel-efficient and comfort-oriented driving style. In addition, in "C" mode the ECO start/stop function is active.
Performance-oriented AMG 4MATIC all-wheel drive
The CLA 45 AMG comes with variable, performance-oriented AMG 4MATIC all-wheel drive as standard. In developing this all-wheel drive, the focus was firmly on performance and dynamism. The power flux to the rear powertrain is provided by a compact power take-off unit (PTU) which is fully integrated in the 7-speed sports transmission. It does not possess an oil circuit of its own. Instead, it is supplied with lubricant from the oil circuit of the sports transmission. This configuration gives rise to substantial weight advantages in comparison to rival systems which branch off power by means of an add-on component with its own oil circuit. Together with the friction-minimised tapered roller bearings, the PTU achieves an excellent level of efficiency. As an additional bonus, the system weight of the new AMG 4MATIC all-wheel drive is up to 25 percent lighter than the all-wheel-drive versions offered by the competition.
A two-part propeller shaft transfers the power from the AMG 2.0-litre four-cylinder turbo engine to the rear axle. In the interests of favourable weight distribution, an electrohydraulically controlled multiple-disc clutch is integrated with the rear axle differential. The multiple-disc clutch immediately detects slip at the front axle. A hydraulic pump instantaneously presses the discs together and channels the engine torque to the rear wheels as necessary. All this takes place virtually without the driver noticing. To enable particularly fast response, the pump is always active and does not require to be started up each time it is needed, as is customary with other systems. Power distribution is fully variable: in normal driving, the CLA 45 AMG uses front-wheel drive in the interests of optimum efficiency. When the driving dynamics so require, the variable AMG 4MATIC all-wheel drive splits the torque between front and rear axle up to a ratio of 50:50 percent. The variables influencing the power distribution ratio are vehicle speed, lateral and longitudinal acceleration, steering angle, speed difference between the individual wheels, selected gear and accelerator position.
3-stage ESP® with ESP® Curve Dynamic Assist
An exclusive feature is the interaction of the AMG 4MATIC all-wheel drive with the 3-stage ESP® and the ESP® Curve Dynamic Assist. The three ESP® stages enable the driver to vary the dynamics of the CLA 45 AMG according to his individual wishes at the push of a button. The safety-oriented "ESP ON" mode supports the driver in maintaining neutral handling characteristics. The system initiates braking intervention on one or more wheels and reduces the engine torque on detecting that the operating conditions are becoming unstable.
Briefly pressing the ESP® button activates "ESP SPORT Handling" mode. This dynamically oriented driving mode applies appropriate control strategies for later ESP® intervention and increased drive torque at the rear axle. This means more fun at the wheel for drivers who are keen to exploit the vehicles dynamic potential. Pressing the ESP® button longer activates "ESP OFF". In this mode, the ESP® functions are not available. ESP OFF should only be used by experienced drivers on cordoned-off race tracks. If the driver steps on the brake pedal in "SPORT Handling" mode or "ESP OFF" mode, all the safety functions of the ESP® system become available during braking.
ESP® Curve Dynamic Assist complements the ESP® system to perfection: during dynamic cornering, imperceptible braking intervention on the inside wheel gives rise to a defined yaw moment around the vertical axis, resulting in precise cornering by the CLA 45 AMG and ensuring that the vehicle remains under control at all times. ESP® Curve Dynamic Assist is adapted according to the selected ESP® mode. In "ESP SPORT Handling" mode and "ESP OFF" mode it supports the drivers wish for increased agility and driving dynamics. ESP® Curve Dynamic Assist is an additional function of the Electronic Stability Program which noticeably improves not only agility, but also active driving safety in critical conditions.
AMG sports suspension with independent front and rear axle
Like every AMG high-performance automobile, the new CLA 45 AMG also incorporates sophisticated axle technology. For enhanced driving dynamics, the three-link front suspension is provided with stiffer steering knuckles and totally new elastokinematics. Newly developed, more rigid bearings are employed in the lower link plane. These provide for more agile cornering properties and more precise and direct feedback from the road surface. The more rigid bearings also lead to higher camber stiffness, enabling higher cornering speeds. In developing the complete front axle, great importance has been attached to attaining the best possible traction in highly dynamic driving.
The four-link rear axle of the CLA 45 AMG is also a totally new development. In the course of optimising the elastokinematics, the strut bearings were duly adapted for maximum driving dynamics and control. The rear axle carrier is provided with more rigid bearings for increased driving stability; the subframe is rigidly connected to the body. The AMG sports suspension with specifically tuned spring/damper units and larger stabilisers provides for high lateral acceleration and a reduced rolling tendency in fast double bends. The CLA 45 AMG comes as standard with AMG light-alloy wheels fitted with 235/40 R 18 tyres.
AMG speed-sensitive sports steering and AMG high-performance braking system
The electromechanical Dual Pinion AMG speed-sensitive sports steering with AMG-specific, speed-dependent power assistance and a constant steering ratio (14.5 : 1) enables high steering precision and agility. The electric motor is installed in space-saving configuration on the steering gear. The AMG high-performance braking system with ventilated and perforated brake discs all round in size 350 x 32 millimetres at the front and 330 x 22 millimetres at the rear provides for spontaneous and reliable deceleration.
Unmistakable design
Just a glance at the new CLA 45 AMG makes it very clear: any resemblance to the CLS 63 AMG is absolutely intentional. The expressive design idiom of the CLA has been enhanced by Mercedes-AMG with some characteristic AMG elements - and the result is a new design icon. The sporty proportions of the CLA were there from the start , but its dynamic look is reinforced by the AMG "twin blade" radiator grille and the cross strut in the AMG front apron, both painted in matt titanium grey. The generously proportioned cooling air intakes are framed by black flics, which improve the airflow over the cooling modules positioned behind them. Bi-xenon headlamps are included as standard.
An eyecatching view from the side is ensured by the sill panels with inserts in matt titanium grey. Further elements typical of a top-of-the-range AMG model include the AMG twin-spoke light-alloy wheels, painted grey and with a high-sheen finish, plus the "TURBO AMG" lettering on the wing. Seen from the rear, the CLA 45 AMG displays a distinctive AMG rear apron: this not only reveals the presence of the air outlet openings at the sides, but also incorporates a large diffuser insert and a trim section in matt titanium grey. The two chrome-plated twin tailpipes of the AMG sports exhaust system, including an exhaust flap, serve to emphasise the cars dynamic appeal. The striking LED tail lights are a standard feature.
Dynamic, exclusive and top-quality interior
Impressive quality, high-grade materials and all the dynamism and exclusivity commonly associated with Mercedes-AMG - the interior of the CLA 45 AMG leaves nothing to be desired. Sports seats in ARTICO man-made leather/DINAMICA microfibre with red contrasting topstitching, red seat belts, the multifunction steering wheel with shift paddles, the AMG DRIVE UNIT and AMG door sill panels all come as standard. Coordinating perfectly with one another are the brushed aluminium trim of the instrument panel and the five galvanised ventilation outlets. Information is provided by the AMG instrument cluster with its central colour display, the AMG main menu and the RACETIMER.
Numerous individualisation options are available for the CLA 45 AMG (selection):
- AMG carbon-fibre exterior mirror housing
- AMG Exterior Carbon-Fibre package: front splitter, side sill panel inserts and trim on rear apron in genuine carbon fibre
- AMG carbon-fibre interior trim
- AMG Exclusive package
- AMG floor mats
- AMG multi-spoke light-alloy wheels in 8 x 19 fitted with 235/35 R 19 tyres, in two variants: painted in titanium grey with high-sheen finish or in matt black with high-sheen rim flange
- AMG Night package: privacy glass, black anodised beltline trim strip, black tailpipe trims in chromed finish, radiator fins in silver chrome, high-gloss black painted finish for front splitter, exterior mirrors, side sill panel inserts and rear apron trim
- AMG Performance exhaust system
- AMG Performance suspension with tauter spring/damper tuning
- AMG Performance steering wheel and E-SELECT lever, electronic main key with AMG emblem
- AMG Performance seats
- AMG wheel bolt covers in black with hub caps in central-locking look (for standard AMG light-alloy wheels only)
- Intelligent Light System
- Red-painted callipers
The sales release date for the CLA 45 AMG is in July 2013; market launch will start this September. Sales price in Germany, incl. 19 percent VAT: CLA 45 AMG 56.078,75 euros
(Mercedes-Benz Press Release)
Thursday, February 19, 2015
2014 Mercedes Benz CLA 45 AMG US Version
Mercedes-Benz AMG celebrated its world debut of the 2014 model year CLA45 AMG at the New York International Auto Show. Set to go on sale in the U.S. this November, the four-door coupe follows in the design footsteps of the successful CLS63 AMG, the trendsetter for four-door high-performance coupes. With 355 horsepower and torque of 332 lb.-ft., the 2014 CLA45 AMG is the worlds most powerful four-cylinder production engine. The AMG Performance 4MATIC all-wheel drive system on the CLA45 AMG sets new standards in its segment as well.
Ola Källenius, outgoing CEO of Mercedes-AMG GmbH: "In the CLA45 AMG, Mercedes-AMG presents a unique and absolutely desirable automobile with the characteristic AMG genes. The high-tech package with the worlds most powerful four-cylinder production engine and performance-oriented AMG 4MATIC all-wheel drive stands for Driving Performance at its best."
Pure AMG: the most powerful four-cylinder production engine in the world
The 2014 CLA45 AMG two-liter turbo engine is the most powerful turbocharged four-cylinder production engine with 355 hp and 332 lb.-ft. of torque. The combination of high power, strong torque and performance-oriented all-wheel drive lends the CLA45 AMG superb driving performance. The powerful coupe sprints from 0-60 in 4.5 seconds, and top speed is electronically limited to 155 mph. Mercedes-AMG achieves these impressive figures by the use of high-tech engineering throughout the engine and related systems. The combination of multiple injection and multiple spark ignition on each piston stroke improves fuel atomization and substantially increases thermodynamic efficiency, ontributing to low exhaust emissions. Other highlights include a sand-cast aluminum crankcase, weight-optimized crank assembly with forged steel crankshaft and forged pistons with friction-optimized piston rings, NANOSLIDE cylinder lining technology, water-to-air intercooling, alternator management and ECO Start/Stop function.
Twin-scroll turbochargers and AMG sports exhaust system with butterfly valve
Mercedes-AMG addresses the challenge of small-displacement turbo engines by using a twin-scroll turbocharger, minimized restrictions in the exhaust system and an innovative injection strategy. Twin-scroll technology makes effective use of exhaust gas back pressure, temperature and momentum to provide a faster build-up of boost pressure, for a quicker build-up of torque from low revs. Twinscroll technology also benefits gas mileage and exhaust emissions. With boost pressure of 11.9 psi (0.8 bar), the AMG 2.0-liter four-cylinder turbo engine also leads the field with the highest boost pressure used in a production engine.
The AMG Sports Exhaust system features large pipes and an automatically controlled butterfly valve in the exhaust system. This technology (also used in the SLK55 AMG) allows the CLA45 AMG to deliver a distinctive sound on acceleration while also offering a refined note at sustained speed, such as during highway cruising. The valve is continuously adjusted by the engine computer, based on signals about gas pedal position and engine speed.
The exhaust butterfly valve provides a more striking exhaust note when the throttle is open and during shifts. It also produces an especially strong sound during downshifts using the rev-matching feature as well as during upshifts under full load with the momentary suppression of ignition and injection. And, the AMG Performance Exhaust system creates an enhanced exhaust note that is typically reserved for engines with more than four cylinders.
High-performance cooling system with components from the SLS AMG GT
The high power of the CLA45 AMG calls for a highly effective cooling system. Similar to technology in the SLS AMG GT, an extra low-temperature cooling circuit is installed for water-to-air intercooling of the pressurized intake air. A large radiator at the very front of the cooling module is supplemented by a second radiator in the wheel well. A high-performance electric pump provides high flow through the water radiators behind the large air intakes and the intercooler. This provides ideal cooling of the highly compressed intake air, contributing to optimum engine performance.
Cooling of transmission oil is integrated into the engine water cooling circuit. The radiator behind the front fascia is supported by another heat exchanger, which is fitted directly on the transmission and supplied with cooling water by an auxiliary pump.
"One man, one engine": engine production the traditional artisan way
Like all AMG V8 and V12 engines, the new 2.0-liter four-cylinder turbo engine is hand-built according to the traditional AMG philosophy of "one man, one engine" on an exclusive assembly line for the new AMG engine at the Mercedes-Benz engine production plant in Kölleda, Germany. The "one man, one engine" production process is evident in the AMG engine plate bearing the personal signature of the engine builder. The engine plate serves as a symbol of AMGs superlative production quality and underscores the peerless genes of the Mercedes-Benz high-performance brand.
AMG SPEEDSHIFT DCT 7-Speed sports transmission
Dual-clutch transmission and all-wheel drive - the drive train on board the CLA45 AMG is a dramatic demonstration of engineering prowess. The AMG SPEEDSHIFT DCT 7-Speed sports transmission is mounted directly to the transversely installed AMG 2.0-liter four-cylinder turbo engine. The dual clutch transmission of the CLA45 AMG features seven gears, three driving programs, a rev-matching function and RACE START for optimum acceleration. The highlights of the AMG DCT sports transmission include fast shifts without interrupting power, a tailor-made control strategy, extremely smooth and easy gearshifts and a high level of efficiency. Reinforced gears ensure maximum durability, and synchronizer rings with carbon-fiber friction linings improve longevity while also optimizing response during manual gearshifts - the ideal situation for ambitious lap times on a closed circuit.
"Momentary M mode" for even greater dynamics and driving pleasure
Another special feature designed to enhance performance and driving pleasure is the "Momentary M" program. In the C and S shift modes, the driver can activate the “M” manual mode without having to remove a hand from the steering wheel, by simply pressing the "up" or "down" shift paddle once. In "Momentary M" mode, the driver experiences the dynamics and performance in all automatic driving programs, with automatic upshifts only at the rev limit. This allows drivers to devote their full attention to the vehicles impressive performance.
The shift times in manual mode "M" and in sport mode "S" are similar to the SLS AMG GT super sports car. Momentary suppression of ignition and injection under full load leads to even faster gearshifts with a more exciting sound than ever. In "C" mode (Controlled Efficiency), soft transmission and engine characteristics are conducive to a fuel-efficient and comfort-oriented driving style. In addition, the ECO Start/Stop function is active in "C" mode.
AMG Performance 4MATIC all-wheel drive
The development focus for the standard AMG Performance 4MATIC all-wheel drive was on "performance" and "dynamic spirit." A compact power take-off unit (PTU) thats fully integrated into the 7-speed sports transmission transfers power to the rear wheels. Its lubrication is supplied by the same oil circuit as the transmission, resulting in substantial weight advantages compared with rival systems, which use an add-on PTU with a dedicated circuit. Together with low-friction tapered roller bearings, the PTU delivers excellent efficiency. As an additional bonus, the weight of the new AMG 4MATIC all-wheel drive is up to 25 percent less than the systems offered by competitors.
A two-part propeller shaft transfers engine power to the rear wheels. Contributing to favorable weight distribution, a multi-disc clutch is integrated into the rear differential. An electronically controlled hydraulic pump instantaneously presses the discs together and channels engine torque dynamically to the rear wheels when needed. All this takes place virtually unnoticed by the driver. For fast response, the pump is always active and doesnt need to be started each time its needed (as is usually the case with other systems). The torque split is fully variable: in normal driving, the CLA45 AMG is frontwheel drive for optimal efficiency. If the system senses any front wheel slippage, the variable AMG 4MATIC all-wheel drive distributes torque between front and rear wheels at a ratio of up to 50 : 50. The variables influencing the torque split are speed differences between individual wheels, vehicle speed, lateral and longitudinal acceleration, steering angle, selected gear and accelerator position.
3-stage ESP® with ESP® Curve Dynamic Assist
An exclusive feature of the CLA45 AMG is the interaction of the 4MATIC all-wheel drive with the 3-stage ESP® and ESP® Curve Dynamic Assist. The three ESP® stages enable drivers to vary the dynamics of the CLA45 AMG according to their individual preferences at the push of a button. The normal "ESP ON" mode helps the driver maintain safe and neutral handling. The system initiates braking on one or more wheels to neutralize the onset of unstable driving conditions.
Briefly pressing the ESP® button activates a "SPORT Handling" mode, which delays ESP® intervention and allows more torque at the rear wheels. This means more driving fun for those who enjoy using the cars full handling potential. Pressing and holding the ESP® button activates the "ESP OFF" mode, which should only be used by experienced drivers on closed circuits. Whenever a driver steps on the brake pedal in "SPORT Handling" or "ESP OFF" mode, all safety features of the ESP® system are available for the duration of the braking.
ESP® Curve Dynamic Assist complements the ESP® system: during spirited cornering, imperceptible braking on an inside wheel directs more torque to the outside wheel, resulting in precise and safe turnin of the CLA45 AMG. ESP® Curve Dynamic Assist is different in each ESP® mode, and in "SPORT Handling" and "ESP OFF," it helps fulfill the drivers wish for increased agility and driving dynamics. ESP® Curve Dynamic Assist is an extra feature of the already impressive Electronic Stability Program, which noticeably improves not only agility, but also active driving safety, at least within the limits of the laws of physics.
AMG sports suspension with multi-link front and rear axles
Like every high-performance AMG automobile, the CLA45 AMG also incorporates sophisticated suspension technology. For enhanced driving dynamics, its three-link front suspension has stiffer steering knuckles and totally new elastokinematics. Newly developed, more rigid bearings are used in the lower link plane to ensure more agile turn-in as well as more precise and direct feedback from the road. More rigid bearings also lead to better camber stability, allowing higher cornering speeds. In developing the complete front suspension, great importance was placed on maintaining the best possible traction under very sporty driving conditions.
The CLA45 AMG four-link rear suspension is also a totally new development. To optimize elastokinematics, the bushings were modified for maximum driving dynamics and control. The rear suspension carrier is fitted with more rigid bearings for increased directional stability, and the subframe is rigidly bolted to the body. With its tuned spring / shock absorber units and larger stabilizer bars, the AMG sports suspension ensures high lateral acceleration and a reduced body roll in fast S-bends. The CLA45 AMG comes standard with twin-spoke AMG light-alloy wheels inlayed in titanium gray with a high-sheen finish and fitted with 235 / 40 R 18 tires.
AMG speed-sensitive sports steering and AMG high-performance braking system
The electromechanical sports steering with AMG speed-dependent power assist and a constant steering ratio of 15.1:1 provides precise and agile steering. Its electric motor is installed directly on the steering gear to save space.
To provide quick, reliable deceleration, AMG high-performance brakes feature vented and perforated front and rear discs that measure 3.8 x 1.2 inches at the front and 13.0 x 0.8 inches at the rear.
Unmistakable design
Even at first glance, the new CLA45 AMG leaves no doubt about its character; similarities with the CLS63 AMG are intentional. Mercedes-AMG complements the expressive design idiom with distinctive AMG elements, creating a new design standard. The CLA was developed with sporty proportions - the AMG "twin blade" radiator grille and the cross member in the AMG front fascia, both painted matte titanium gray, further reinforce its sporty appearance. Large air inlet ports on the sides are framed by black winglets that improve air flow to the cooling system behind them. Bi-xenon headlights are part of the standard equipment.
From the side of the CLA45 AMG, sill panels with matte titanium gray inserts catch the eye. Other elements of a top-of-the-line AMG model are the twin-spoke AMG light-alloy wheels, inlayed in titanium gray with a high-sheen finish, as well as a "TURBO AMG" badge on the fender. The AMG rear fascia includes stylized side air vents as well as a large diffuser insert and matte titanium gray trim. The conjoined quad-tip chrome tailpipes of the AMG exhaust system emphasize its sporty purpose. Striking LED tail lights come as standard equipment.
Dynamic, exclusive and high-quality interior
Obvious quality, high-end materials and a sporty, exclusive character typical of Mercedes-AMG make the interior of the CLA45 AMG impressive. Standard equipment includes AMG door sill panels, sport seats wrapped in MB-Tex man-made leather and DINAMICA microfibers with red contrasting stitching, red seat belts, a multifunction steering wheel with shift paddles and an AMG DRIVE UNIT bearing the AMG Affalterbach Crest. The AMG instrument cluster provides key information with a central color display, the AMG main menu and the RACETIMER, while brushed aluminum trim on the instrument panel is matched to the five anodized ventilation nozzles.
Numerous options for the CLA45 AMG include:
- AMG Exterior Carbon-Fiber package: front splitter, side sill panel inserts and trim on rear fascia in genuine carbon fiber
- AMG Carbon-Fiber Interior trim AMG 19” 16-Spoke Alloy Wheels (8 x 19 with 235 / 35 R 19 tires, inlayed in titanium gray with high-sheen finish or painted matt black with high-sheen rim flange
- AMG Night Styling: black anodized beltline trim strip, tailpipes with black-chromed finish, radiator grille blades in silver chrome, gloss black painted front splitter, exterior mirrors, side sill panel inserts and rear fascia trim
- AMG Performance steering wheel
- AMG Performance seats by Recaro
- AMG wheel center caps (for 18-inch AMG light-alloy wheels only)
- Red painted calipers
- AMG Drivers Package: AMG Performance Suspension , 19-inch AMG Alloy Wheels, Red Brake
- Calipers and 167 mph top speed
- AMG Performance Exhaust
U.S. deliveries of the 2014 CLA45 AMG begin in November, 2013 at a suggested retail price of $47,450 (the CLA250 price begins at $29,900).
(Mercedes-Benz USA Press Release)
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