Here's to a new era of performance inspired by F1®. The new AMG C 43 4MATIC is here to take over. A seamless blend of technology, luxury, and refined power.
With technology derived directly from Formula 1™, the latest generation of the Mercedes-AMG C 43 4MATIC sets new standards for innovative drive solutions. The AMG 2.0-litre four-cylinder engine is the world's first series-production unit to feature an electric exhaust gas turbocharger. The new form of turbocharging guarantees particularly spontaneous response across the entire rev range and thus offers an even more dynamic driving experience. The turbocharger is operated via the 48-volt electrical system, which also feeds the belt-driven starter-generator (BSG). In the Mercedes-AMG C 43 4MATIC the unit produces 402 hp and, in certain driving situations, is able to call upon a brief additional boost of 13 hp from the BSG. The standard rear-axle steering, the AMG Performance 4MATIC permanent all-wheel drive with rear-biased torque distribution, the AMG SPEEDSHIFT MCT 9G transmission with wet start-off clutch and the AMG RIDE CONTROL suspension with Adaptive Damping System also contribute to the dynamic driving experience. In keeping with this, brand-specific features in the equipment and appointments as well as in the exterior and interior design emphasise the performance-oriented character of the new Mercedes-AMG C 43 4MATIC
"The C-Class has always been an absolute success story for Mercedes-AMG. With the innovative technology of the electric exhaust gas turbocharger, we are once again significantly increasing the attractiveness of this latest generation. The new turbocharging system and the 48-volt on-board electrical system not only contribute to the outstanding driving dynamics of the C 43 4MATIC, but also improve its efficiency. In this way, we are demonstrating the tremendous potential that lies in electrified combustion engines. The standard all-wheel drive, the active rear-axle steering and the quick-shifting transmission all serve to enhance the Driving Performance that is the hallmark of AMG", says Philipp Schiemer, Chairman of the Board of Management of Mercedes AMG GmbH.
At the heart of the new Mercedes-AMG C 43 4MATIC is the AMG 2.0-litre four-cylinder engine, which combines innovative technologies and high performance with exemplary efficiency. At the same time, it remains true to a tradition typical of the brand: not only was it developed entirely at the company's site in Affalterbach, but it is also manufactured there in accordance with the principle of "One Man, One Engine". In this process, Mercedes-AMG combines the craftsmanship of its highly qualified employees with the latest production methods of Industry 4.0 and a high degree of digitalisation.
The internally named M139l engine (l for longitudinal installation) is the world's first series-production engine to be turbocharged with an electric exhaust gas turbocharger. The innovative system is a direct derivative of the technology that the Mercedes-AMG Petronas F1 Team has been using so successfully in the premier class of motorsport for many years. The new form of turbocharging guarantees particularly spontaneous response across the entire rev range. This leads to an even more dynamic driving experience, while at the same time increasing efficiency.
The functional principle of the electric exhaust gas turbocharger in detail
An electric motor around four centimetres thin is integrated directly on the turbocharger shaft between the turbine wheel on the exhaust side and the compressor wheel on the intake side. Electronically controlled, this drives the shaft of the turbocharger directly and thus accelerates the compressor wheel, before the exhaust gas flow takes over the drive in the conventional way.
This significantly improves the response directly from idle speed and across the entire rev range. The combustion engine responds even more spontaneously to accelerator pedal input, while the entire driving feel is significantly more dynamic. In addition, the electrification of the turbocharger enables higher torque at low revs. This also increases agility and optimises acceleration from a standstill. Even when the driver takes his foot off the accelerator or brakes, the technology is able to maintain boost pressure at all times, so ensuring a continuously direct response.
Powered by the 48-volt on-board electrical system, the electric exhaust gas turbocharger operates at speeds of up to 175,000 rpm, which enables a very high air flow rate. The turbocharger, electric motor and power electronics are connected to the combustion engine's cooling circuit to create an optimal temperature environment at all times.
The closed-deck design of the M139 - adopted from the world of motorsport - ensures maximum rigidity in conjunction with low weight and allows peak combustion pressures over 2,300 psi. The areas around the cylinders are mostly solid, and the cover plate is penetrated only by smaller ducts for the coolant and engine oil. Other design highlights of the engine include NANOSLIDE technology, with which the linings are coated so as to reduce the friction between piston and cylinder. This gives the linings a mirror-like surface for minimal friction, is twice as hard as conventional grey cast-iron liners and therefore makes them much more durable. The coating made its debut in the AMG V8 engine M156, has been used to refine other AMG engines for many years and can also be found in the Formula 1™ engine of the Mercedes-AMG Petronas Formula 1 Team.
Another outstanding feature is the two-stage fuel injection. In the first stage, particularly fast and precise piezo injectors deliver the fuel into the combustion chambers at pressures of up to 2,900 psi. The second stage adds intake manifold duct injection with solenoid valves, which is needed to achieve the engine's high specific power output.
The high output also necessitates a sophisticated cooling system that can cool the cylinder head and crankcase to different temperature levels. This measure makes it possible to maintain a cold cylinder head for maximum power with efficient ignition timing, along with a warm crankcase to reduce internal engine friction. The cylinder head is cooled by a mechanical high-performance water pump; the crankcase is cooled by a second, electrically driven water pump. After a cold start, this pump remains passive until the engine has warmed up. In operation it is regulated by the engine control unit so that the crankcase is always cooled according to need.
402 hp and 369 lb-ft enable sporty driving performance
In the 2.0-litre four-cylinder in-line engine, innovative technology helps the Mercedes-AMG C 43 4MATIC to achieve a rated output of 402 hp at 6,750 rpm. The maximum torque of 369 lb-ft is available at 5,000 rpm. Depending on the situation, the system also briefly provides an additional boost of 13 hp through the belt-driven starter generator (BSG). The second-generation BSG acts as a mild hybrid, providing this temporary power boost as well as functions such as gliding and recuperation for maximum efficiency. At the same time, the 48-volt technology also increases comfort, as the transitions between the start-stop function and the gliding mode function are almost imperceptible.
The C 43 4MATIC Sedan accelerates from a standstill to 100 km/h in just 4.6 seconds. The top speed is electronically limited at 240 km/h. By adding the optional AMG Driver's Package, it can be raised to 265 km/h.
AMG SPEEDSHIFT MCT 9G transmission with wet start-off clutch and AMG Performance 4MATIC
Power is transmitted via the AMG SPEEDSHIFT MCT 9G transmission (MCT = Multi-Clutch Transmission), in which a wet start-off clutch replaces the torque converter. It reduces weight and, thanks to its lower inertia, optimises response to accelerator pedal input, especially during spurts and load changes. The elaborately calibrated software ensures extremely short shift times as well as fast multiple downshifts if required. In addition, the intermediate throttle function in the "Sport" and "Sport+" driving modes delivers a particularly emotionally appealing gearshift experience. There is also the RACE START function, which ensures optimal acceleration from a standstill. The ECO start/stop function is automatically activated in the "Comfort" drive program; the "Glide" function can be activated in "Individual".
The AMG Performance 4MATIC permanent all-wheel drive features an AMG-specific torque distribution between the front and rear axles of 31 to 69 percent. The rear-biased configuration provides for enhanced dynamic handling, including higher lateral acceleration and improved traction when accelerating.
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