Mercedes-Benz A Class (W177) 2018> A45 AMG 383bhp remap figures
Thinking of remapping a Mercedes-Benz A Class A45 AMG 383bhp? The standard car makes 383bhp and 480Nm; with a Stage 1 remap from our Leicester workshop we expect around 475bhp and 625Nm, up to +92bhp and +145Nm.
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 | 383 bhp | 475 bhp | +92 bhp |
| Torque | 480 Nm | 625 Nm | +145 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 383 bhp | 480 Nm | |
| Stage 1Maximum software-only performance | 475 bhp | 625 Nm | +92 bhp +145 Nm |
| Stage 1 EcoPerformance with economy in mind | 452 bhp | 613 Nm | +69 bhp +133 Nm |
| Eco mapEconomy first | 445 bhp | 606 Nm | +62 bhp +126 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 A Class
Without a turbocharger the improvement comes from ignition, fuelling and throttle mapping rather than boost, so expect a smaller but still noticeable change in response.
Engine management is by a Bosch MG1CP002 unit. Newer ECUs often protect their software, so we read the exact unit and version on the car before confirming the figures on this page.
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 A Class A45 AMG 383bhp?
We expect 475bhp and 625Nm against 383bhp and 480Nm as standard: up to +92bhp and +145Nm. 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 A Class A45 AMG 383bhp?
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: 452bhp and 613Nm expected. The Eco map is economy first: 445bhp and 606Nm. Both still sit above the standard 383bhp and 480Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.
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