The S 350 BlueEFFICIENCY is the most fuel-efficient S-Class of all time. Equipped with state-of-the-art common rail direct injection and a series of other innovations, such as piezo injectors, the S 350 CDI BlueEFFICIENCY sets new standards in diesel technology. The maximum torque of 540 Nm is available from a mere 1600 revolutions per minute. The assembly operates cleanly and efficiently and generates an output of 173 kW.

Six cylinders and a balance shaft ensure exceptionally smooth operation. Lightweight design, coupled with improved aerodynamics and the use of tyres with optimum rolling resistance, has a positive effect on (combined) fuel consumption, which averages just 7.6 litres per 100 km (7.7 litres per 100 km for long-wheelbase version). And the standard-specification diesel particulate filter achieves further significant reductions in emissions.

For particularly good roadholding on snow, ice, in rain and on poor road surfaces, the S 350 CDI BlueEFFICIENCY is also available with 4MATIC all-wheel drive.


(S 350 CDI BlueEFFICIENCY: fuel consumption combined: 7.6–8.0 l/100 km, CO2 emissions combined: 199–211 g/km)[3]

The present generation of common-rail diesel engines is more agile and powerful than ever before. The S 450 CDI is the top-of-the-line model of the S-Class diesel engines: this V8 diesel engine with a maximum torque of 730 Nm provides sporty power reserves and is characterised by an eager responsiveness.

The 235 kW S 450 CDI reaches this torque level at 2200 rpm. Improved airflow characteristics in air/charge-air cooling as well as in the cylinder head intake ports, combined with an optimised turbocharger, ensure excellent power delivery – with maximum smoothness of operation.


(S 450 CDI: fuel consumption combined: 9.1–9.3 l/100 km, CO2 emissions combined: 240–245 g/km)[3]