Volkswagen Audi Group Euro 6 Engine Issues
Mike Knowles • August 29, 2025
3.0 TDi Euro 6 engines
In this article we are going to discuss the problem that has been destroying the newer Euro 6 engines in the Volkswagen Audi Group (VAG). The Euro 6 engine is any engine produced since 2014 and predominantly effects the 3.0L TDI varrient of the Euro 6 engine. The problem is due to an emissions fix by the Volkswagen Audi group that lowers oil pressure in the vehicle at low RPMs, this in turn is causing premature wear and tear on engine internals and we are seeing engines seize on average around 45- 50,000 miles. Now there is other factors that effect this number such as regular maintenance, driving style and transmission but on average 50k miles is when major engine issues are occurring in these engines particularly with the automatic transmission, thats because with an automatic transmission the vehicle changes gear at low rpms which is were the oil pressure issue is most prominent.
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What is wrong with the oil pressure?
Oil is used in your engine to lubricate all the moving parts and stops friction and premature wear on those parts, Oil pressure in vital to engine health and the engine builds pressure with the oil pump to force the oil up through the engine and its galleries and oil ways to wear it needs to be, like bearings and crankshaft. The pressure in the TDI is variable and changes based on temperature and rpms. All this information is stored in the Engine Control Unit (ECU) which allows programers like MSK to adapt these values to increase oil pressure in the trouble areas which are causing the premature failure. The trouble areas are predominately below 2,500 rpm where oil pressure doesn't increase along side the increase in rpms like it should. Due to oil pressure not increasing the engine isn't getting properly lubricated and this is the main reason for engine failure in these euro 6 engines.
How do I know If My Vehicle is Effected?
The only way to see if your vehicle is effected by this oil pressure issue is with a diagnostic tool that allows access to the live data reading of the vehicle, then we simply look at the engine oil pressure and the engine rpms, next we see how the oil pressure reacts to the engine rpm increase to see if the problem is present in the vehicle. This whole procedure is relatively straight forward for any mechanic to test and confirm.
What is the Fix?
To fix this issue requires the skills of a remapping company such as MSK Remapping. What we do is access the ECU in the car and reprogram the oil pressure data for the vehicle so that it runs smoothly at all points like it should do. After the remapping has taken place we would then use the diagnostic tools to confirm that the programming has been successful and that the car is in a safe state for driving.
