Considering an ECU remap for your Mercedes-Benz C 43 AMG 390hp? A Stage 1 remap can take this W205 - 2018 - 2021 petrol engine from 390 BHP to 420 BHP and from 520 Nm to 620 Nm of torque (naturally aspirated). This engine scores 4.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Mercedes-Benz C can achieve.
The Mercedes-Benz C 43 AMG 390hp is a 3.0L naturally aspirated petrol engine producing 390 BHP and 520 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 420 BHP and 620 Nm — a gain of around 30 BHP (8%) and 100 Nm (19%).
This engine has limited 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: Naturally aspirated engine: gains are usually limited; results vary widely.. High tuned torque: check transmission torque capacity and service history.
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 |
|---|---|---|---|---|---|
| 180d 122hp | 122 → 160 | +38 | 300 → 380 | +80 | Good (7.5/10) |
| 160 (1600cc) - 129hp | 129 → 175 | +46 | 210 → 310 | +100 | Good (6.5/10) |
| 160 (1497cc) - 129hp | 129 → 175 | +46 | 210 → 295 | +85 | Good (6.5/10) |
| 200d 150hp | 150 → 200 | +50 | 320 → 440 | +120 | Excellent (8/10) |
| 180 (1600cc) - 156hp | 156 → 175 | +19 | 250 → 310 | +60 | Moderate (5.5/10) |
| 180 (1500cc) - 156hp | 156 → 175 | +19 | 250 → 295 | +45 | Moderate (5.5/10) |
| 200d 160hp | 160 → 180 | +20 | 360 → 400 | +40 | Good (6.5/10) |
| 200 (1500cc) - 184hp | 184 → 220 | +36 | 280 → 350 | +70 | Moderate (5.5/10) |
| 220d 194hp | 194 → 220 | +26 | 400 → 460 | +60 | Good (6.5/10) |
| 300d 245hp | 245 → 270 | +25 | 500 → 560 | +60 | Good (6.5/10) |
| 300 - 258hp | 258 → 275 | +17 | 370 → 450 | +80 | Moderate (4.5/10) |
| 300de 306hp | 306 → 335 | +29 | 700 → 760 | +60 | Moderate (5.5/10) |
| 300e 320hp | 320 → 350 | +30 | 700 → 750 | +50 | Limited (3.5/10) |
| 400 - 333hp | 333 → 415 | +82 | 480 → 600 | +120 | Moderate (5.5/10) |
| 63 AMG 476hp | 476 → 570 | +94 | 700 → 820 | +120 | Moderate (5/10) |
| 63 AMG S 510hp | 510 → 570 | +60 | 700 → 820 | +120 | Moderate (4.5/10) |
Get a personalised remap quote for your Mercedes-Benz C. 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.
