Audi A7
Supercharged V6 with 245 kW after facelift. Most powerful supercharger variant of the EA837 in A6/A7. Excellent long-distance engine.
The most beautiful touring car of its generation
A7 4G plus CTUA: everything just works here. The fastback silhouette is timelessly beautiful, the 333 hp supercharger pushes instantly and effortlessly, and the sporty chassis holds corners in check. Cult status among Audi connoisseurs — rightly so.
Engine Weaknesses 7
Coolant leakage into the integrated supercharger intercooler is particularly critical in the CTUA due to the higher boost pressure (245 kW) — hydraulic lock is possible.
Symptoms: Coolant loss, white exhaust cloud, cylinder 3 misfires, power loss.
EA837-typical: upper chain tensioners lose oil pressure at rest, brief rattle on cold start. The CTUA as the performance variant (S6) runs under higher thermal load.
Symptoms: Brief metallic rattle after cold start, gone after 1–2 seconds. With wear, permanent chain noise.
Coolant pump and thermostat fail at high mileages. S6/A7 3.0 TFSI at 245 kW places high demands on the cooling system.
Symptoms: Overheating warning, coolant loss, unstable temperature gauge.
The CTUA runs at 245 kW and permanently stresses the Eaton supercharger more than the 213 kW variant. The front nose bearing wears correspondingly earlier.
Symptoms: Rev-proportional whistling from the supercharger area, in extreme cases bearing failure.
The CTUA as the high-performance variant stresses the supercharger drive belt more heavily. The 60,000 km change interval must be strictly observed.
Symptoms: Squealing noises, power loss under load.
Direct-injection oil carbon on the unwashed intake valves. In the CTUA under sporty S6 conditions, reinforced by part-load EGR operation.
Symptoms: Hesitation, power loss, cold-start problems, rough idle.
Failed membrane in the oil separator leads to elevated oil consumption and fault codes. In sporty S6/A7 use the higher blowby pressure places greater stress on it.
Symptoms: Whistling noise, power loss, false air fault codes, elevated oil consumption.
Vehicle Weaknesses 6
The optional air suspension on the A7 4G is prone to compressor failure and leaking air bellows. Leaking bellows cause the compressor to run continuously until it overheats.
3.0 TDI models produced March–Dec. 2012: oil can enter the brake servo via vacuum lines and damage its membrane.
The S-Tronic DL501 dual-clutch gearbox suffers from premature clutch wear in frequent stop-start traffic. Regular gearbox oil changes every 60,000 km are necessary.
TÜV reports note increasing axle and strut deficiencies with mileage. Rubber bushes and control arms wear, especially at the front axle.
The 12V vehicle battery is a primary issue on the A7 4G. The complex electrical system drains the battery quickly, especially on short runs and in winter.
Door panels and B/C-pillar trim develop creaking and rattling over time. Known issue on the A6/A7 4G.
Reports & Tests
81 owner complaints filed with NHTSA (2010–2018). Most reported: Airbags (17), Steering (15), Electrical (15).