Mercedes-Benz CLS (C257) 2018> 53 AMG 428bhp remap figures
Stock, this 2018> Mercedes-Benz CLS petrol (3.0L) produces 428bhp and 521Nm. Our expected figures for a Stage 1 remap are 516bhp and 675Nm, an expected gain of up to 88bhp and 154Nm.
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 | 428 bhp | 516 bhp | +88 bhp |
| Torque | 521 Nm | 675 Nm | +154 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 428 bhp | 521 Nm | |
| Stage 1Maximum software-only performance | 516 bhp | 675 Nm | +88 bhp +154 Nm |
| Stage 1 EcoPerformance with economy in mind | 494 bhp | 663 Nm | +66 bhp +142 Nm |
| Eco mapEconomy first | 487 bhp | 655 Nm | +59 bhp +134 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 CLS
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.
The ECU recorded for this variant is a Bosch MG1CP002. 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 CLS 53 AMG 428bhp?
We expect 516bhp and 675Nm against 428bhp and 521Nm as standard: up to +88bhp and +154Nm. 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 CLS 53 AMG 428bhp?
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: 494bhp and 663Nm expected. The Eco map is economy first: 487bhp and 655Nm. Both still sit above the standard 428bhp and 521Nm.
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 CLS figures
Other petrol variants
All petrol CLS (C257) variants · CLS (C257) 2018> overview · All Mercedes-Benz figures