Mercedes-Benz C Class (W203) 2004-2006 55 AMG 367bhp remap figures
Stock, this 2004-2006 Mercedes-Benz C Class petrol (5.4L) produces 367bhp and 510Nm. Our expected figures for a Stage 1 remap are 410bhp and 574Nm, an expected gain of up to 43bhp and 64Nm.
Choose your map
Stage 1 remap figures
A Stage 1 remap is a software-only change to the ECU on an otherwise standard car. It needs no extra parts, which makes it the usual starting point.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 367 bhp | 410 bhp | +43 bhp |
| Torque | 510 Nm | 574 Nm | +64 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 367 bhp | 510 Nm | |
| Stage 1Maximum software-only performance | 410 bhp | 574 Nm | +43 bhp +64 Nm |
| Stage 1 EcoPerformance with economy in mind | 399 bhp | 569 Nm | +32 bhp +59 Nm |
| Eco mapEconomy first | 396 bhp | 566 Nm | +29 bhp +56 Nm |
Who is the Stage 1 map for?
- Drivers who want a sharper throttle and a small, honest gain from software alone.
- Owners who would rather keep the car standard in every other way.
- Anyone who wants the fullest software-only map for this engine, accepting that the gain is modest without a turbocharger.
What this means for your C Class
Naturally aspirated petrol engines have no boost to raise, so gains from software alone are more modest than on a turbocharged car and come from fuelling, ignition and throttle response.
Engine management is by a Bosch ME2.8 unit. Older engine management is simpler to work with, but age matters: worn sensors, leaks and tired components can hold back what a remap delivers, which is why we run a diagnostic check first.
We remap at our Belgrave Gate workshop in Leicester, or at your home or work within 30 miles, and every job starts with a diagnostic check.
Please note: these are expected figures, not guarantees. Real results vary with the condition of the vehicle, the ECU software version, fuel quality and the hardware fitted. Some options - including Stage 2 and anything that needs extra hardware - are for off-road or competition use only. We check every vehicle first and confirm what is achievable before any work starts.
Figures reviewed 22 October 2026.
Stage 1 questions
How much power does the Stage 1 map give the Mercedes-Benz C Class 55 AMG 367bhp?
We expect 410bhp and 574Nm against 367bhp and 510Nm as standard: up to +43bhp and +64Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
Does a Stage 1 remap need any extra parts on the Mercedes-Benz C Class 55 AMG 367bhp?
No. Stage 1 is a software-only change to the ECU on an otherwise standard car.
Is there a gentler map than Stage 1 for this engine?
Yes, two. Stage 1 Eco is performance with economy in mind: 399bhp and 569Nm expected. The Eco map is economy first: 396bhp and 566Nm. Both still sit above the standard 367bhp and 510Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.
More Mercedes-Benz C Class figures
Other petrol variants
- C32 AMG 354bhp 2001-2006
- C320 218bhp 2001-2006
- C230K 192bhp 2001-2006
- C240 170bhp 2001-2006
- C200K 163bhp 2001-2006
- C180K 143bhp 2001-2006
- C180 129bhp 2001-2006
All petrol C Class (W203) variants · C Class (W203) 2001-2006 overview · All Mercedes-Benz figures