One problem related to timing tensioner has been reported for the 2007 Audi S4. The most recently reported issues are listed below.
Audi has used a timing chain in the 4. 2l v8 engine. Because timing chains are typically very reliable, the chain has been placed at the rear of the engine near the firewall. The problem is that the timing tensioners are made of plastic and prone to breakage. This can result in catastrophic engine failure.
| Car Stall problems | |
| Timing Tensioner problems |