Considering an ECU remap for your Mercedes-Benz E 420 CDI 314hp? A Stage 1 remap can take this W211 - 2006 - 2009 diesel engine from 314 BHP to 354 BHP and from 730 Nm to 810 Nm of torque (turbocharged). This engine scores 6/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Mercedes-Benz E can achieve.
The Mercedes-Benz E 420 CDI 314hp is a 4.0L turbocharged diesel engine producing 314 BHP and 730 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 354 BHP and 810 Nm — a gain of around 40 BHP (13%) and 80 Nm (11%).
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 |
|---|---|---|---|---|---|
| 200 CDI 136hp |
| 136 → 190 |
| +54 |
| 340 → 460 |
| +120 |
| Excellent (8/10) |
| 220 CDI 163hp | 163 → 190 | +27 | 400 → 460 | +60 | Good (6.5/10) |
| 220 CDI 170hp | 170 → 190 | +20 | 400 → 460 | +60 | Good (6/10) |
| 200 K 184hp | 184 → 204 | +20 | 250 → 270 | +20 | Moderate (4/10) |
| 280 CDI 190hp | 190 → 260 | +70 | 440 → 600 | +160 | Excellent (8/10) |
| 300 CDI Bluetec 211hp | 211 → 250 | +39 | 540 → 600 | +60 | Good (6/10) |
| 320 CDI 211hp | 211 → 260 | +49 | 540 → 600 | +60 | Good (6.5/10) |
| 320 CDI 224hp | 224 → 260 | +36 | 540 → 600 | +60 | Good (6/10) |
| 500 388hp | 388 → 408 | +20 | 530 → 570 | +40 | Limited (3.5/10) |
| 63 AMG 514hp | 514 → 530 | +16 | 630 → 660 | +30 | Limited (3/10) |
Get a personalised remap quote for your Mercedes-Benz E. 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.
