The new six-cylinder in-line diesel engine OM 656 is a milestone of Mercedes-Benz driving technologies and an important contribution to achieving the global climate goals.
Most powerful diesel car in Mercedes-Benz history
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Most powerful diesel car in Mercedes-Benz history
The new six-cylinder in-line diesel engine OM 656 is a milestone of Mercedes-Benz driving technologies and an important contribution to achieving the global climate goals.
The new engine comes with the new S-Class – in two output classes: The Mercedes-Benz S 350 d has an output of 210 kW (286 hp) and 600 Nm (combined fuel consumption: 5.1 l/100 km; combined CO₂ emissions: 134 g/km). The Mercedes-Benz S 400 d with 250 kW (340 hp) and 700 Nm is the most powerful series production car diesel engine ever offered by Mercedes-Benz (combined fuel consumption: 5.2 l/100 km; combined CO₂ emissions: 135 g/km). Both variants are also available with 4MATIC all-wheel drive.
Although the output has increased noticeably compared to the preceding model, the new engine consumes up to six percent less fuel. The special traits of the top-of-the-line engine in the diesel family include the stepped-bowl combustion process, two-stage turbocharging and, for the first time, the use of CAMTRONIC variable valve-lift control. Its design features a combination of aluminium engine block and steel pistons as well as further improved NANOSLIDE® coating of the cylinder walls.
The new six-cylinder diesel engine is designed to comply with future emissions legislation (RDE – Real Driving Emissions). All the components of relevance for efficient emissions reduction are installed directly on the engine. The integrated technology approach combining the new stepped-bowl combustion process, dynamic multi-way exhaust-gas recirculation and near-engine exhaust-gas aftertreatment, for the first time combined with variable valve-lift control, makes further reduced consumption with low emissions possible. Thanks to the near-engine insulated configuration, exhaust-gas aftertreatment has low heat loss and extremely favourable operating conditions.
