Considering an ECU remap for your Mercedes-Benz S 400 CDI 250hp? A Stage 1 remap can take this W220 - 2002 - 2005 diesel engine from 250 BHP to 290 BHP and from 560 Nm to 650 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.
The Mercedes-Benz S 400 CDI 250hp is a 4.0L turbocharged diesel engine producing 250 BHP and 560 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 290 BHP and 650 Nm — a gain of around 40 BHP (16%) and 90 Nm (16%).
This engine has moderate remap suitability, with a balanced spread of gains across both power and torque — providing a noticeable improvement across the rev range. 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.
| Engine | BHP | Gain | Torque | Gain | Score |
|---|---|---|---|---|---|
| 320 CDI 204hp |
| 204 → 240 |
| +36 |
| 500 → 570 |
| +70 |
| Good (6.5/10) |
| 55 AMG - 500hp | 500 → 550 | +50 | 700 → 820 | +120 | Moderate (4.5/10) |
| 600 V12 - 500hp | 500 → 578 | +78 | 800 → 910 | +110 | Moderate (4.5/10) |
| 65 AMG V12 Turbo 612hp | 612 → 670 | +58 | 1000 → 1100 | +100 | Moderate (5.5/10) |
Get a personalised remap quote for your Mercedes-Benz S. We'll connect you with a trusted professional in your area.
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 before proceeding.
