Mercedes-Benz A 45 AMG S 421hp Remap
Expected gains of +49 BHP and +120 Nm torque
Get Your Free Quote ↓BHP+49 hp (12%)
Standard
421 hp
Tuned
470 hp
Torque+120 Nm (24%)
Standard
500 Nm
Tuned
620 Nm
Suitability
Moderate (5/10)Gains Profile
Torque-focusedHeadroom
MediumMercedes-Benz A 45 AMG S 421hp ECU Remapping
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.
How this engine compares
- 15thof 47 Mercedes-Benz A engines by power gain
- 75%of the 9,842 engines we hold gain data for see a smaller power increase
- 87%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
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.
Considerations
!Naturally aspirated engine: gains are usually limited; results vary widely.
!High tuned torque: check transmission torque capacity and service history.