Mercedes-Benz ML350 BlueTEC — Unlocking the Full Potential of the OM642
The Mercedes-Benz ML350 BlueTEC is powered by the legendary OM642 3.0-litre V6 turbo-diesel, an engine renowned for its smooth power delivery and long-term durability. Originally developed by Mercedes for use across its high-end SUV and executive ranges, the OM642 combines strong midrange torque with refinement — but like most factory calibrations, it’s deliberately conservative to meet emissions and fuel targets across multiple markets.
Through careful recalibration, we’re able to refine the OM642’s fuelling strategy, torque model, and throttle mapping to extract its true potential. The result is sharper throttle engagement, a more assertive torque curve, and smoother acceleration that feels entirely natural — like Mercedes intended it but couldn’t release it from the factory.
The OM642’s strengths lie in its robust design: a compacted graphite iron block, aluminium heads, and a variable-geometry turbocharger capable of delivering strong, linear boost. Our tuning doesn’t push those systems harder — it optimises how they work together. The calibration brings in torque earlier, holds it longer, and maintains stable air-fuel ratios for smooth, efficient combustion.
What makes this tune particularly rewarding is how refined it feels. There’s no harshness, just clean, confident torque that transforms the ML350 from a capable SUV into something genuinely effortless to drive — particularly when towing or overtaking on open roads.
At AutoUpgrades, every OM642 calibration follows OEM-level methodology. All factory safety strategies — including boost, torque, and thermal management — remain fully active. This ensures the additional performance integrates seamlessly with the vehicle’s drivetrain and 7G-Tronic transmission, retaining Mercedes’ trademark refinement and reliability.
The end result is exactly what an ML350 should be: powerful, composed, and efficient. The OM642, when properly calibrated, delivers the kind of effortless performance that feels factory-perfect — just with its full potential finally realised.
Explore the Mercedes-Benz ML350 BlueTEC Tune here and experience what precision calibration can bring to one of Mercedes’ finest diesel engines.