Considering an ECU remap for your Mercedes-Benz GLS 400d 331hp? A Stage 1 remap can take this 2019 - 2022 diesel engine from 331 BHP to 380 BHP and from 700 Nm to 840 Nm of torque (turbocharged). This engine scores 7/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Mercedes-Benz GLS can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The Mercedes-Benz GLS 400d 331hp is a 2.9L turbocharged diesel engine producing 331 BHP and 700 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 380 BHP and 840 Nm — a gain of around 49 BHP (15%) and 140 Nm (20%).
This engine has moderate remap suitability, with gains weighted towards torque — you will notice the difference most strongly in mid-range pulling power and in-gear acceleration. 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.
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 |
|---|
| 350d 286hp | 286 → 380 | +94 | 600 → 820 | +220 | Excellent (8/10) |
| 450 (3.0T) 367hp | 367 → 420 | +53 | 500 → 590 | +90 | Good (7/10) |
| 580 (4.0T) 490hp | 490 → 570 | +80 | 700 → 820 | +120 | Good (7/10) |
| 63 AMG V8 Bi-Turbo 612hp | 612 → 690 | +78 | 850 → 950 | +100 | Good (6.5/10) |
Get a personalised remap quote for your Mercedes-Benz GLS. 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.
