Mercedes-Benz R Class (W251) 2006> R350L CDI 261bhp remap figures
Thinking of remapping a Mercedes-Benz R Class R350L CDI 261bhp? The standard car makes 261bhp and 620Nm; with a Stage 1 remap from our Leicester workshop we expect around 308bhp and 703Nm, up to +47bhp and +83Nm.
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 | 261 bhp | 308 bhp | +47 bhp |
| Torque | 620 Nm | 703 Nm | +83 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 261 bhp | 620 Nm | |
| Stage 1Maximum software-only performance | 308 bhp | 703 Nm | +47 bhp +83 Nm |
| Stage 1 EcoPerformance with economy in mind | 296 bhp | 696 Nm | +35 bhp +76 Nm |
| Eco mapEconomy first | 292 bhp | 692 Nm | +31 bhp +72 Nm |
Who is the Stage 1 map for?
- Drivers who want stronger pulling power for overtaking, hills and towing, with no parts to fit.
- Daily and motorway drivers who want the engine to feel less strained at cruising speed.
- Anyone who wants the biggest software-only change we list for this engine.
What this means for your R Class
On a diesel the biggest change is normally torque: the remap changes how much fuel and boost the ECU allows across the rev range, so pulling power arrives earlier and holds on longer.
This car is listed with a Bosch EDC17CP01 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 R Class R350L CDI 261bhp?
We expect 308bhp and 703Nm against 261bhp and 620Nm as standard: up to +47bhp and +83Nm. 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 R Class R350L CDI 261bhp?
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: 296bhp and 696Nm expected. The Eco map is economy first: 292bhp and 692Nm. Both still sit above the standard 261bhp and 620Nm.
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 R Class figures
Other diesel variants
All diesel R Class (W251) variants · R Class (W251) 2006> overview · All Mercedes-Benz figures