Expected gains of +49 BHP and +120 Nm torque
Get Your Free Quote ↓Considering an ECU remap for your Mercedes-Benz A 45 AMG S 421hp? A Stage 1 remap can take this W177 - 2018 -> petrol engine from 421 BHP to 470 BHP and from 500 Nm to 620 Nm of torque (naturally aspirated). This engine scores 5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Mercedes-Benz A can achieve.
The Mercedes-Benz A 45 AMG S 421hp is a 2.0L naturally aspirated petrol engine producing 421 BHP and 500 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 470 BHP and 620 Nm — a gain of around 49 BHP (12%) and 120 Nm (24%).
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 |
|---|---|---|---|---|---|
| 160d 95hp | 95 → 135 | +40 | 240 → 330 |
| +90 |
| Excellent (8.5/10) |
| 160 (1.3T) 109hp | 109 → 175 | +66 | 180 → 300 | +120 | Excellent (8/10) |
| 180d (1.5D) 116hp | 116 → 135 | +19 | 260 → 330 | +70 | Good (7.5/10) |
| 180d (2.0D) 116hp | 116 → 175 | +59 | 260 → 440 | +180 | Excellent (8/10) |
| 180 (1.3T) 136hp | 136 → 175 | +39 | 200 → 300 | +100 | Excellent (8/10) |
| 200d 150hp | 150 → 200 | +50 | 320 → 440 | +120 | Excellent (8/10) |
| 200 (1.3T) 163hp | 163 → 175 | +12 | 250 → 300 | +50 | Good (6.5/10) |
| 220 (2.0T) 190hp | 190 → 250 | +60 | 300 → 400 | +100 | Excellent (8/10) |
| 220d 190hp | 190 → 220 | +30 | 400 → 460 | +60 | Good (7/10) |
| 250e 218hp | 218 → 233 | +15 | 450 → 490 | +40 | Limited (3.5/10) |
| 250 (2.0T) 224hp | 224 → 250 | +26 | 350 → 400 | +50 | Good (6.5/10) |
| 35 AMG 306hp | 306 → 330 | +24 | 400 → 490 | +90 | Moderate (5/10) |
| 45 AMG 387hp | 387 → 470 | +83 | 480 → 620 | +140 | Moderate (5.5/10) |
Get a personalised remap quote for your Mercedes-Benz A. 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.