Ignition coils and spark plugs: misfires and failures
Often reportedHigh-performance engines like the 2.5 TFSI are sensitive to premature wear of ignition coils and spark plugs under heavy load
Engine Bay
When buying a used Audi TT 2.5 TFSI 2018 (8S), the most commonly reported issue is: Ignition coils and spark plugs: misfires and failures. Excessive oil consumption is also frequently reported.
Caution advised
Most reported issue: Ignition coils and spark plugs: misfires and failures. Service history and a test drive matter.
Listed from most frequently reported, each with its source.
High-performance engines like the 2.5 TFSI are sensitive to premature wear of ignition coils and spark plugs under heavy load
Engine Bay
Many users and technical reports indicate higher than normal oil consumption, especially after intensive driving or long high-rev trips. Frequent oil top-ups and oily deposits in the intake system may be observed
Engine Internal
High-mileage examples report timing chain stretching or wear and tensioner issues; this can cause chain noise, timing errors, rough running, and serious engine damage
Timing chain
The 2.5 TFSI engine operates under high pressure and temperature, leading to thermal stress on the turbocharger and oil leaks from seals or return lines
Turbo
Audi Tt 2.5 TFSI (2018): boot 280 L; fuel use 8,5 l/100 km (urban 11,4 l/100 km · extra-urban 6,8 l/100 km); 0–100 in 3.9 s.
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.