Data under review — The figures shown for this engine variant are currently being verified. They may be updated as we refine our data.
Considering an ECU remap for your BMW X6 3.5i 306hp? A Stage 1 remap can take this E71 - 2008 - 2014 petrol engine from 306 BHP to 370 BHP and from 400 Nm to 520 Nm of torque (naturally aspirated). This engine scores 5.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your BMW X6 can achieve.
The BMW X6 3.5i 306hp is a 3.0L naturally aspirated petrol engine producing 306 BHP and 400 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 370 BHP and 520 Nm — a gain of around 64 BHP (21%) and 120 Nm (30%).
This engine has moderate remap suitability, with gains weighted towards torque — you will notice the difference most strongly in mid-range pulling power and in-gear acceleration. The tuning headroom is classified as high, based on the percentage gain available from the factory output.
From a technical perspective, the transmission is many variants use zf 5/6-speed automatics (where fitted); manuals also exist. at this torque level, transmission and driveline servicing history becomes especially important..
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.. Unusually high gain for NA engine: treat as an estimate and verify against the exact engine variant.. High tuned torque: check transmission torque capacity and service history.. Large torque increase: drivetrain condition (clutch/gearbox) becomes more important at this level.
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.
| Engine | BHP | Gain | Torque | Gain | Score |
|---|---|---|---|---|---|
| 3.0D 211hp | 211 → 280 | +69 | 520 → 600 | +80 | Good (7.5/10) |
| 3.0D 235hp | 235 → 300 | +65 | 520 → 620 | +100 | Good (7.5/10) |
| 3.0D 245hp | 245 → 300 | +55 | 520 → 620 | +100 | Good (7.5/10) |
| 3.5D 286hp | 286 → 340 | +54 | 580 → 680 | +100 | Good (6.5/10) |
| 4.0D 306hp | 306 → 350 | +44 | 600 → 680 | +80 | Good (6/10) |
| M 5.0D 381hp | 381 → 420 | +39 | 740 → 800 | +60 | Moderate (5.5/10) |
| 5.0i 407hp | 407 → 470 | +63 | 600 → 700 | +100 | Moderate (5/10) |
| 5.0i ActiveHybrid 486hp | 486 → 530 | +44 | 780 → 860 | +80 | Limited (3.5/10) |
| M 555hp | 555 → 610 | +55 | 680 → 800 | +120 | Moderate (4.5/10) |
Get a personalised remap quote for your BMW X6. We'll connect you with a trusted professional in your area.
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 before proceeding.
