Mercedes-Benz S W221 - 2005 - 2013 350 CDI 235hp
Real standard and upgraded performance figures for the 350 CDI 235hp engine in the Mercedes-Benz S W221 - 2005 - 2013.
These are real standard and Stage 1 (and where available, Stage 2) figures for the Mercedes-Benz S W221 - 2005 - 2013 350 CDI 235hp — not a generic estimate for the model range.
| Horsepower (HP) | Torque (Nm) | |
|---|---|---|
| Standard | 235 | 540 |
| Stage 1 | 290 | 620 |
| Stage 2 | 317 | 660 |
- Make
- Mercedes-Benz
- Model
- S
- Generation
- W221 - 2005 - 2013
- Engine
- 350 CDI 235hp
- Fuel type
- Turbo-Diesel
Frequently asked questions
Is Stage 1 tuning safe for the Mercedes-Benz S W221 - 2005 - 2013 350 CDI 235hp?
Yes — Stage 1 for this engine is a software-only remap calibrated to stay within its stock mechanical limits (turbo, clutch, fueling), so no hardware changes are required.
How much more power does the 350 CDI 235hp make after tuning?
Standard output is 235 HP / 540 Nm; Stage 1 on this engine typically reaches 290 HP / 620 Nm. Exact results can vary slightly with fuel quality and vehicle condition.
How long does a Mercedes-Benz S W221 - 2005 - 2013 350 CDI 235hp remap take?
Once your original file is uploaded through the member panel, most requests for this engine are completed within a few hours.
Can the 350 CDI 235hp be reverted to its original file?
Yes — we keep the original file on record for the request, so the ECU can be put back to stock at any time.