Mercedes-Benz CLS (W218) 2008-2010 350 287bhp remap figures
The Mercedes-Benz CLS 350 287bhp (2008-2010) is a petrol 3.5L model making 287bhp and 365Nm as standard. After a Stage 1 ECU remap we expect 320bhp and 398Nm - up to 33bhp and 33Nm 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 | 287 bhp | 320 bhp | +33 bhp |
| Torque | 365 Nm | 398 Nm | +33 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 287 bhp | 365 Nm | |
| Stage 1Maximum software-only performance | 320 bhp | 398 Nm | +33 bhp +33 Nm |
| Stage 1 EcoPerformance with economy in mind | 312 bhp | 395 Nm | +25 bhp +30 Nm |
| Eco mapEconomy first | 309 bhp | 394 Nm | +22 bhp +29 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
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.
This car is listed with a Bosch ME9.7 engine control 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 CLS 350 287bhp?
We expect 320bhp and 398Nm against 287bhp and 365Nm as standard: up to +33bhp and +33Nm. 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 350 287bhp?
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: 312bhp and 395Nm expected. The Eco map is economy first: 309bhp and 394Nm. Both still sit above the standard 287bhp and 365Nm.
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
- 350 288bhp 2006-2008
- 350 268bhp 2005-2006
- CLS500 306bhp 2005-2006
- 500 382bhp 2006-2010
- 63 506bhp 2007-2010
All petrol CLS (W218) variants · CLS (W218) 2005-2010 overview · All Mercedes-Benz figures