Audi A6
EA888 Gen3 (220/224 PS) — more robust development over Gen1/2, but still suffers from chain tensioner issues and a weak stock oil pump at idle. Direct injection causes carbon build-up. Very long-lived with maintained oil change intervals.
Anxiety engine — costly failure looming
220 hp 2.0L with a known problem: oil pump delivers insufficient pressure at idle. The risk of expensive repairs overshadows any driving pleasure.
Engine Weaknesses 6
The stock oil pump reduces pressure at idle for better efficiency. This leads to oil starvation at the camshaft adjusters and accelerated wear of bearing surfaces and the timing chain.
Symptoms: Rattling and clattering on cold start or at idle, sporadic fault codes for camshaft adjusters, rough idle
The hydraulic chain tensioners are delicate and prone to hardening from oil coke. A snapped timing chain causes total engine destruction. Also occurs on 2013–2015 model years.
Symptoms: Irregular rattling at warm idle, engine light with timing chain fault codes, in worst case engine failure
The CNCD has two hydraulic chain tensioners that lose pressure at warm, low-viscosity oil and allow the chain to rattle. If neglected, chain jump is a risk.
Symptoms: Irregular rattling at idle after prolonged operation, noise disappears at higher rpm.
The plastic thermostat housing and electric water pump on the EA888 Gen3 can develop leaks. Coolant loss and mild overheating tendency at higher mileages.
Symptoms: Dropping coolant level, coolant smell after driving, temperature gauge above normal range
The EA888 Gen3 (CNCD) also shows elevated oil consumption in some units due to premature coking of the piston ring drain holes. Typical onset at 40,000–70,000 km.
Symptoms: Oil level drops between oil changes, occasional slight blue smoke.
Direct injection without port injection means fuel never washes the intake valves. Oil mist from the PCV system deposits as carbon and narrows the intake port.
Symptoms: Rough cold start, gradual power loss, misfires under load, increased fuel consumption
Vehicle Weaknesses 9
On model years 2015–2018, the locking bolt of the tow bar can fracture, potentially causing the trailer to become detached while driving. Free workshop visit required.
The Multitronic CVT gearbox has a notoriously poor reliability record. Improved on the C7, it remains a risk. Total failure possible from 100,000 km; repair is very costly.
A material defect can cause the camshafts in the 3.0 TDI to fracture, leading to engine damage. Mainly affects vehicles from model year 2014 to early 2017.
The optional air suspension (AAS) is prone to failure through porous air bellows and defective compressors. Repair costs of 600–1,800 EUR per corner are possible.
LED headlights fail due to defective control modules or individual LEDs. Repair is often more expensive than replacement, as modules cannot be replaced individually.
The automatic climate control shows malfunctions from around 60,000 km: incorrect temperature regulation, blower stage issues or complete failure of individual zones on the three-zone system.
Wheel bearings, particularly at the rear axle, show increased wear at higher mileages. Regularly flagged on vehicles from 80,000 km.
On the C7, rust occurs primarily on the underbody and sills, sometimes in hard-to-reach areas. On vehicles over 7 years old, the underbody should be thoroughly inspected.
On V6 and V8 engines, engine mounts often wear from around 50,000 km, causing noticeable vibrations.