Considering an ECU remap for your Mercedes-Benz G 500 - 421hp? A Stage 1 remap can take this -> 2017 petrol engine from 421 BHP to 500 BHP and from 610 Nm to 820 Nm of torque (naturally aspirated). This engine scores 5.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Mercedes-Benz G can achieve.
The Mercedes-Benz G 500 - 421hp is a 4.0L naturally aspirated petrol engine producing 421 BHP and 610 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 500 BHP and 820 Nm — a gain of around 79 BHP (19%) and 210 Nm (34%).
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 high, based on the percentage gain available from the factory output.
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.. Unusually high gain for NA engine: treat as an estimate and verify against the exact engine variant.. High tuned torque: check transmission torque capacity and service history.. Large torque increase: drivetrain condition (clutch/gearbox) becomes more important at this level.
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 |
|---|
| 270 CDI 156hp | 156 → 190 | +34 | 400 → 480 | +80 | Good (7.5/10) |
| 300 CDI 184hp | 184 → 260 | +76 | 400 → 600 | +200 | Excellent (8/10) |
| 350 CDI 211hp | 211 → 275 | +64 | 540 → 600 | +60 | Good (7.5/10) |
| 320 CDI 211hp | 211 → 260 | +49 | 540 → 600 | +60 | Good (7/10) |
| 320 CDI 224hp | 224 → 275 | +51 | 540 → 620 | +80 | Good (7/10) |
| 350 CDI 224hp | 224 → 275 | +51 | 540 → 600 | +60 | Good (7/10) |
| 350 CDI 245hp | 245 → 280 | +35 | 600 → 650 | +50 | Good (6.5/10) |
| 400 CDI 250hp | 250 → 290 | +40 | 560 → 650 | +90 | Good (7/10) |
| 55 AMG 476hp | 476 → 540 | +64 | 700 → 820 | +120 | Moderate (5/10) |
| 55 AMG 500hp | 500 → 540 | +40 | 700 → 820 | +120 | Moderate (4.5/10) |
| 63 AMG 544hp | 544 → 660 | +116 | 760 → 1100 | +340 | Good (6.5/10) |
| 63 AMG 571hp | 571 → 660 | +89 | 760 → 1100 | +340 | Good (6.5/10) |
| 65 AMG 612hp | 612 → 670 | +58 | 1000 → 1100 | +100 | Limited (3.5/10) |
Get a personalised remap quote for your Mercedes-Benz G. 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.
