Mercedes-Benz ML 420 CDI 306hp Remap
Expected gains of +44 BHP and +110 Nm torque
Get Your Free Quote ↓BHP+44 hp (14%)
Standard
306 hp
Tuned
350 hp
Torque+110 Nm (16%)
Standard
700 Nm
Tuned
810 Nm
Suitability
Good (6.5/10)Gains Profile
BalancedHeadroom
MediumMercedes-Benz ML 420 CDI 306hp ECU Remapping
Considering an ECU remap for your Mercedes-Benz ML 420 CDI 306hp? A Stage 1 remap can take this W164 - 2005 - 2009 diesel engine from 306 BHP to 350 BHP and from 700 Nm to 810 Nm of torque (turbocharged). This engine scores 6.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Mercedes-Benz ML can achieve.
How this engine compares
- 11thof 25 Mercedes-Benz ML engines by power gain
- 70%of the 9,842 engines we hold gain data for see a smaller power increase
- 85%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The Mercedes-Benz ML 420 CDI 306hp is a 4.0L turbocharged diesel engine producing 306 BHP and 700 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 350 BHP and 810 Nm — a gain of around 44 BHP (14%) and 110 Nm (16%).
This engine has moderate remap suitability, with a balanced spread of gains across both power and torque — providing a noticeable improvement across the rev range. The tuning headroom is classified as moderate, based on the percentage gain available from the factory output.
Considerations: High tuned torque: check transmission torque capacity and service history.. Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
Fuel economy note: possible improvement with conservative driving.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
Considerations
!High tuned torque: check transmission torque capacity and service history.
!Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.