2019 — 2026
12.8L OM 471 L6 - 476hp
Diesel
During your acceleration test, listen closely for any hesitation or surging in the PowerShift 3 transmission; occasionally, sensor calibration or clutch wear patterns can become noticeable under load.
Spend time in the cab with the engine idling at operating temperature to check for any unusual vibrations or resonance that might indicate worn engine mounts, common in heavy-duty long-haulers.
Cycle through the MirrorCam system and digital dash displays to ensure all camera units are sharp and responsive, as any flickering can sometimes point to potential wiring harness or software module wear.
After a short drive, monitor the AdBlue system readout for any intermittent warnings, as the SCR (Selective Catalytic Reduction) sensors on these OM 471 units can occasionally require attention as they clock up high road hours.
Usually marks a major service interval including valve lash adjustments and intensive inspection of the turbocharger housing.
A common point where operators consider a deep dive into the EGR system efficiency and a full cooling system flush to protect the engine block.
Often the stage where professional operators review the state of the clutch actuator and potential auxiliary belt drive component wear.
Keep a close eye on the engine oil condition and follow the recommended Mercedes-Benz oil specifications to support the longevity of the OM 471 engine.
Regularly inspect the air intake piping and intercooler connections for any signs of soot or oil weeping, which can affect fuel efficiency.
Ensure the AdBlue tank breather is kept clean to prevent pressure-related faults in the exhaust after-treatment system.
Periodically check the chassis harness points for any environmental wear, especially if the vehicle has been operating in coastal or high-salt areas of NZ.
Keep the cabin air filtration system clean to ensure the climate control remains effective for the driver during long hauls.
Estimated repair costs if issues arise
While the PowerShift 3 is robust, depending on the truck's operational history in heavy stop-start traffic, you might eventually need to budget for actuator servicing or clutch plate renewal to ensure smooth shifting.
In trucks of this age, sensors within the exhaust system can reach the end of their service life. If this component needs attention in the future, it is best to plan for a sensor replacement or calibration to keep the OM 471 running within its efficiency parameters.
The OM 471 is an impressive engine, but given the nature of forced induction, minor leaks or actuator sluggishness can arise over time. It is wise to consider a future allowance for potential minor turbo system maintenance to maintain peak power delivery.
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Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer