Coolant leaks from plastic components (thermostat/water pump)
Often reportedCoolant leaks due to cracks or failure in the plastic thermostat housing and water pump covers have been reported in modern engines.
Cooling
The most commonly reported issue when buying a used Audi Q5 2.0 TFSI 2025: Coolant leaks from plastic components (thermostat/water pump). Also, valve carbon buildup and misfires (direct injection engines) are frequently reported.
Caution advised
Most reported issue: Coolant leaks from plastic components (thermostat/water pump). Service history and a test drive matter.
Listed from most frequently reported, each with its source.
Coolant leaks due to cracks or failure in the plastic thermostat housing and water pump covers have been reported in modern engines.
Cooling
Carbon buildup on intake valves can occur in direct injection TFSI engines, causing idle fluctuations, cold start difficulty, misfires, and slight performance loss.
Engine Internal
Owner reports and technical discussions indicate higher than normal oil consumption in 2.0 TFSI engines based on the EA888 family. Reported causes include piston ring wear/coking and deposit formation that degrades piston-cylinder sealing.
Engine Internal
Some users report ticking or knocking noises from the engine; in older 2.0 TFSI engines, these sounds have been linked to timing chain components or tensioners. This is not a systematic defect.
Timing chain
Hard shifts, delayed response, or jerking have been reported in Q5 models with dual-clutch transmissions (S tronic/DSG).
Transmission
Same trim, different year
We only publish claims we can verify. Cards come from Difetti fault records matched to this vehicle on brand, fuel, engine and generation.