BHP+55 hp (23%)
Standard
235 hp
Tuned
290 hp
Torque+80 Nm (15%)
Standard
540 Nm
Tuned
620 Nm
Suitability
Good (6.5/10)Gains Profile
Power-focusedHeadroom
MediumMercedes-Benz S 350 CDI 235hp ECU Remapping
Considering an ECU remap for your Mercedes-Benz S 350 CDI 235hp? A Stage 1 remap can take this W221 - 2005 - 2013 diesel engine from 235 BHP to 290 BHP and from 540 Nm to 620 Nm of torque (turbocharged). This engine scores 6.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Mercedes-Benz S can achieve.
How this engine compares
- 16thof 43 Mercedes-Benz S engines by power gain
- 82%of the 9,842 engines we hold gain data for see a smaller power increase
- 64%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The Mercedes-Benz S 350 CDI 235hp is a 3.0L turbocharged diesel engine producing 235 BHP and 540 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 290 BHP and 620 Nm — a gain of around 55 BHP (23%) and 80 Nm (15%).
This engine has moderate remap suitability, with gains weighted towards peak power — the improvement is most noticeable at higher RPM. The tuning headroom is classified as moderate, based on the percentage gain available from the factory output.
Considerations: High tuned torque: check transmission torque capacity and service history.. Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
Fuel economy note: possible improvement with conservative driving.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
Considerations
!High tuned torque: check transmission torque capacity and service history.
!Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.