New Mercedes-Benz C-Class Saloon | Now more similar with the S-Class
The new Mercedes-Benz C-Class already looks to be in motion at a standstill with its dynamic proportions, thanks to the combination of short front overhang, long wheelbase and rear overhang. The sporty bonnet with power domes accentuates this urge of forward motion. The windscreen and passenger cell have been moved to the rear for these classic proportions known in the industry as "cab-backward design". The preceding model was already a great step forward in terms of a high-value appeal in the interior, and the new C-Class goes even further with respect to modern luxury. The interior adopts highlights from the new S-Class, adding a sporty touch.
Spearhead of the efficiency improvement measures is the new OM 654 M with an integrated second-generation startergenerator (ISG). It has a 48-volt partial on-board electrical system. An energy recovery function and the ability to "glide" with the engine switched off make the engine even more efficient. Along with electrification, which also includes the use of an electric refrigerant compressor for the air conditioning system, the most important modifications that make an output of up to 195 kW plus an additional 15 kW from the EQ Boost system possible are:
A new crankshaft increases the stroke to 94.3 mm and the displacement to 1993 cc (previously: 92.3 and 1950).
The injection pressure is increased to 2700 bar (previously 2500).
Particularly fast response times and uniform power delivery thanks to two water-cooled turbochargers, both now featuring variable turbine geometry.
A sodium-filled cooling duct in each of the steel pistons. This helps to dissipate temperature peaks in the combustion cavity of the pistons.
In terms of exhaust gas aftertreatment, this most powerful of the four-cylinder diesel engines also takes things one step further. Its components include:
a close-coupled NOx storage catalytic converter for reducing nitrogen oxides.
a DPF (diesel particulate filter with special coating for reducing also the amount of nitrogen oxides).
an SCR catalytic converter (selective catalytic reduction with metered injected quantity of AdBlue®) and.
an additional SCR catalytic converter in the vehicle's underbody, with a separately metered injected quantity of AdBlue®.
The four-cylinder M 254 petrol engine with a second-generation starter-generator with an additional output of up to 15 kW and 200 Nm more torque is also celebrating its première in the C-Class. Thanks to energy recovery and the ability to "glide" with the engine switched off, the petrol engine is highly efficient. In the M 254, Mercedes-Benz has for the first time combined all the innovations of the modular engine family of four and six-cylinder petrol and diesel units in a single engine. They include NANOSLIDE® cylinder coating, CONICSHAPE® cylinder honing (trumpet honing) and the exhaust aftertreatment system positioned directly at the engine. A completely new feature is the segment charger with flow connection, an advancement of the twin-scroll technology for even more instantaneous response of the forced induction system. The completely newly developed segment turbocharger is a result of cooperation between Mercedes-Benz turbocharger developers and the Mercedes-AMG
Petronas Formula 1 team. The technology transfer to series production sets new standards with respect to power combined with maximum efficiency. For short periods, the output of the C 300 (combined fuel consumption: 7.0-6.6 l/100 km, combined CO2 emissions: 159-150 g/km)2 can additionally be increased by up to 20 kW overboost.
The 9G-TRONIC transmission was developed further for adapting the ISG, and is installed in all C-Class models.
0:06 Exterior
2:44 Interior
5:10 Running
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