Audi Q5

The CCWA 3.0 TDI rattles on cold start due to a pressureless chain tensioner. Chain drive C is most commonly affected and the most accessible repair point. Cost from 650 euros.

Symptoms: Metallic rattling immediately after a cold start for 1–5 seconds, sounds like loose metal clattering from the engine bay; disappears once oil pressure builds.

The CCWA 3.0 TFSI uses an Alusil cylinder block similar to the 3.2 FSI. When using Longlife oil (low HTHS values), the piston tends to tilt in the cylinder — engine damage risk.

Symptoms: Knocking/rattling noise from the engine, increased oil consumption, juddering under load, power loss.

The EGR system on the CCWA 3.0 TDI accumulates soot deposits, particularly in city use. EGR cooler leaks can cause coolant loss.

Symptoms: Engine warning light, power loss, rough idle, limp-home mode, occasional coolant loss from a leaking EGR cooler.

The oil heat exchanger (oil cooler) on the 3.0 TDI V6 develops leaks causing oil loss. An improved replacement unit is available as a retrofit kit.

Symptoms: Oil warning light, visible oil film under the car or in the engine bay, oil level dropping despite top-ups, oil smell after driving.

The dual-mass flywheel (DMF) on the CCWA wears at high mileages. Replacement is sensibly combined with a clutch change. DMF parts cost approximately 760 euros plus clutch.

Symptoms: Rattling at idle especially after a cold start, vibration when pulling away or changing gear, drivetrain droning.

On the CCWA 3.0 TFSI supercharger, all chains and tensioners were proactively replaced at 75,000 km. Timing chain wear is a known issue on this generation.

Symptoms: Rattling on cold start, sounds like a loose chain, disappears once oil pressure builds up.

On 3.0 TDI models (03–12/2012) oil mist can damage the brake booster diaphragm, significantly reducing braking performance. Recall required.

On Q5 models from 2011 the panoramic roof glass can spontaneously shatter in severe frost (below -20°C) and send fragments into the interior.

From about six years of age, control arms and coil springs show elevated wear that is flagged at MOT. Heavy bodywork and all-wheel drive accelerate bush wear.

The S-Tronic dual-clutch gearbox tends to harsh judder on pull-away and delayed response, especially in urban traffic. Clutch wear from 80,000 km possible.

Bei Fahrzeugen mit über 150.000 km zeigen Antriebswellen erhöhten Verschleiß. Besonders Gelenkwellen-Manschetten reißen und führen zu Fettaustritt und Lagerschaden.