Mercedes-Benz E Class (W212) 2009-2016 350 BlueEFF 301bhp remap figures
The Mercedes-Benz E Class 350 BlueEFF 301bhp (2009-2016) is a petrol 3.5L model making 301bhp and 370Nm as standard. After a Stage 1 ECU remap we expect 335bhp and 412Nm - up to 34bhp and 42Nm 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 | 301 bhp | 335 bhp | +34 bhp |
| Torque | 370 Nm | 412 Nm | +42 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 301 bhp | 370 Nm | |
| Stage 1Maximum software-only performance | 335 bhp | 412 Nm | +34 bhp +42 Nm |
| Stage 1 EcoPerformance with economy in mind | 327 bhp | 409 Nm | +26 bhp +39 Nm |
| Eco mapEconomy first | 324 bhp | 407 Nm | +23 bhp +37 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 E 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.
The ECU recorded for this variant is a Bosch MED17.7.1. 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 E Class 350 BlueEFF 301bhp?
We expect 335bhp and 412Nm against 301bhp and 370Nm as standard: up to +34bhp and +42Nm. 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 E Class 350 BlueEFF 301bhp?
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: 327bhp and 409Nm expected. The Eco map is economy first: 324bhp and 407Nm. Both still sit above the standard 301bhp and 370Nm.
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 E Class figures
Other petrol variants
- E400 328bhp 2013-2016
- E500 381bhp 2009-2011
- E250 208bhp 2013-2016
- E500 BlueEFF 402bhp 2011-2016
- E200 181bhp 2013-2016
- E63 AMG 517bhp 2009-2016
- E63 AMG BiTurbo 525bhp 2011-2013
- E63 AMG BiTurbo PP+ 557bhp 2011-2013
- E63 AMG BiTurbo PP+ 557bhp 2013-2016
- E63 AMG S BiTurbo 585bhp 2013-2016
All petrol E Class (W212) variants · E Class (W212) 2009-2016 overview · All Mercedes-Benz figures