Expected gains of +44 BHP and +110 Nm torque
Get Your Free Quote ↓Considering an ECU remap for your Mercedes-Benz GL 420 CDI 306hp? A Stage 1 remap can take this X164 - 2006 - 2012 diesel engine from 306 BHP to 350 BHP and from 700 Nm to 810 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 GL can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The Mercedes-Benz GL 420 CDI 306hp is a 4.0L turbocharged diesel engine producing 306 BHP and 700 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 350 BHP and 810 Nm — a gain of around 44 BHP (14%) and 110 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 211hp | 211 → 260 | +49 | 510 → 600 | +90 | Good (7.5/10) |
| 350 CDI 211hp | 211 → 275 | +64 | 510 → 600 | +90 | Good (7.5/10) |
| 320 CDI 224hp | 224 → 260 | +36 | 510 → 600 | +90 | Good (6.5/10) |
| 350 CDI 224hp | 224 → 275 | +51 | 510 → 600 | +90 | Good (7.5/10) |
| 350 CDI 265hp | 265 → 295 | +30 | 620 → 700 | +80 | Good (6/10) |
| 450 CDI 306hp | 306 → 350 | +44 | 700 → 810 | +110 | Good (6.5/10) |
| 450 - 340hp | 340 → 355 | +15 | 460 → 485 | +25 | Limited (3/10) |
| 500 - 388hp | 388 → 405 | +17 | 530 → 570 | +40 | Limited (3.5/10) |
Get a personalised remap quote for your Mercedes-Benz GL. 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.