Mercedes-Benz CLA (C117) 2013> 45 AMG 375bhp remap figures
The Mercedes-Benz CLA 45 AMG 375bhp (2013>) is a petrol 2.0L model making 375bhp and 475Nm as standard. After a Stage 1 ECU remap we expect 420bhp and 547Nm - up to 45bhp and 72Nm more than stock.
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 | 375 bhp | 420 bhp | +45 bhp |
| Torque | 475 Nm | 547 Nm | +72 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 375 bhp | 475 Nm | |
| Stage 1Maximum software-only performance | 420 bhp | 547 Nm | +45 bhp +72 Nm |
| Stage 1 EcoPerformance with economy in mind | 409 bhp | 541 Nm | +34 bhp +66 Nm |
| Eco mapEconomy first | 405 bhp | 538 Nm | +30 bhp +63 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 CLA
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 MED17.7.2 unit. We read the ECU on your car and compare it with the software listed here before any work starts, so you know what to expect before you commit.
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 CLA 45 AMG 375bhp?
We expect 420bhp and 547Nm against 375bhp and 475Nm as standard: up to +45bhp and +72Nm. 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 CLA 45 AMG 375bhp?
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: 409bhp and 541Nm expected. The Eco map is economy first: 405bhp and 538Nm. Both still sit above the standard 375bhp and 475Nm.
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 CLA figures
Other petrol variants
All petrol CLA (C117) variants · CLA (C117) 2013-2018 overview · All Mercedes-Benz figures