Mercedes R 500 306
Engine Remapping in Portsmouth
Mercedes R 500 306 in Portsmouth. Standard and remapped figures for this exact engine.

- Fully dyno tested remaps
- 30 day money back guarantee
- Lifetime software warranty
- UK-wide local network
Remap stats
Mercedes R 500 306: standard vs remapped
Petrol engine. Indicative stage 1 figures, fully dyno tested.
Power
+35 bhp · +11%- Standard306 bhp
- Remapped341 bhp
Torque
+45 Nm · +10%- Standard460 Nm
- Remapped505 Nm
Tuning figures are indicative estimates, not guaranteed results. Actual results depend on the condition of the vehicle.
Prices from £130
Fully dyno tested | 30 day money back guarantee | Lifetime software warranty
Engine remapping for the Mercedes R 500 306 in Portsmouth takes it from 306 to 341 bhp and from 460 to 505 Nm in our stage 1 figures: +35 bhp (11%) and +45 Nm (10%).
The figures above are estimates for a standard, well-maintained Mercedes R-class petrol; they are not a guarantee of any particular result.
Mercedes R 500 306: remap at a glance
- Fuel: Petrol
- Standard power: 306 bhp, remapped: 341 bhp (+35 bhp, +11%)
- Standard torque: 460 Nm, remapped: 505 Nm (+45 Nm, +10%)
- Service: stage 1 ECU remap, fully dyno tested
Petrol Mercedes R-class: what changes with a remap
Petrol engines are remapped by refining fuelling, ignition timing and, on turbocharged engines, boost control. Done carefully this releases performance the manufacturer left in reserve, giving sharper throttle response and a stronger top end.
How the Mercedes R 500 306 compares
Ranked by power gain against the other petrol R-class engines (3 in total), the R 500 306 is 2nd, 2 bhp above the R-class petrol average of 33 bhp.
Across our whole catalogue the average petrol remap adds 27 bhp and 51 Nm, so this engine's 35 bhp and 45 Nm sits at or above that benchmark.
Book ECU tuning for your Mercedes R-class in Portsmouth
Based around Portsmouth, our team serves local drivers as part of the nationwide Remap Experts network. We regularly work with drivers in Hayling Island, Winchester, Southsea, Newport and Gosport and nearby areas of the South East.
Each remap is dyno tested before it is signed off, and is protected by a 30 day money back guarantee and a lifetime software warranty. Ask for a quote online or by phone.
If you are closer to Southampton, Sussex and Basingstoke, those neighbouring Remap Experts sites can help too.

Get a quote for your Mercedes R 500 306
Send your details and a specialist will confirm what is possible for your engine.
Included
What we can do for your Mercedes R-class
Stage 1 ECU remap
Add power and torque and improve driveability. Software only, tailored to your engine.
ECU repair and testing
Is your engine control unit playing up? We can arrange testing and repair, and source replacement ECUs.
DPF and EGR fault repair
Persistent DPF or EGR errors diagnosed and resolved in accordance with all current road-legal standards.
Engine carbon cleaning
Fault finding and carbon cleaning for the inside of your engine, typically completed in a couple of hours.
Same model
Other R-class engines
From quote to remapped in four steps
No jargon and no pressure. Here is exactly what happens.
- 01
Find your vehicle
Choose your make, model and engine to see the standard and remapped power and torque for your car.
- 02
Request a quote
Send your details and we contact you by SMS or call back with a quote. No obligation.
- 03
Book with your local site
Your local Remap Experts site arranges the remap and answers any questions about your car.
- 04
Remapped and dyno tested
Your remap is fully dyno tested, with a 30 day money back guarantee and a lifetime software warranty.
Everything you need to know
Plain-English guides to how remapping works, what it does and what to check first.
- 6 min read
What is ECU remapping?
The engine control unit, what a remap changes, and who it suits.
Read guide - 5 min read
The benefits of ECU remapping
More torque, better driveability and the potential for better economy.
Read guide - 6 min read
How ECU remapping works, step by step
From reading the original software to the dyno test.
Read guide