2018 Mercedes-Benz S 350 d 4MATIC (combined fuel consumption: 5.5 l/100 km, combined CO2 emissions: 145 g/km) and S 400 d 4MATIC models (combined fuel consumption: 5.6 l/100 km, combined CO2 emissions: 147 g/km), the new six-cylinder in-line diesel engine is being premiered in two output classes with 210 kW (286 hp) and 600 Nm and 250 kW (340 hp) and 700 Nm.
Although the output has increased noticeably compared to the preceding model, the new engine consumes up to seven 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.