2007 Audi S4 Problems: 1 Issues Every Owner Should Know
2007 model year · 0+ owner reports · Updated April 2026
According to Au7o's analysis of 0+ owner reports, the 2007 Audi S4 has 1 documented known issues, with 1 rated critical. The most serious is B6/B7 4.2L V8 Timing Chain Tensioner Failure ($4,000-$8,000 repair). Across all issues, repair costs range from $4,000 to $8,000. DIY maintenance guides at au7o.io.
All 1 Known Issues
On the 2004-2008 Audi S4 4.2L V8, the 4.2L V8 in the B6 and B7 S4 has timing chain guides and tensioners at the back of the engine (against the firewall) that wear prematurely. Replacement requires engine removal, making this one of the most expensive common repairs.
Common Symptoms
- Rattling on cold start
- Check engine light
- Timing codes
- Engine stall
- Rough running
How to Fix
Diagnose by scanning for cam/crank correlation faults (commonly P0011, P0021, P0016-P0018), listening for prolonged chain rattle on cold start, and confirming camshaft adjustment values with VCDS or equivalent; severe cases may also show worn guide material in the oil pan. The proper repair is engine/transmission removal and replacement of the full rear timing service components: primary and secondary chain tensioners, chain guides/rails, timing chains as needed, cam adjuster hardware, seals/gaskets, and often related wear items such as valve cover gaskets and clutch or rear main seal while access is available. Because the timing set is mounted at the rear of the 4.2L V8, this is a labor-intensive job typically requiring precise locking tools and timing setup, with independent shop costs commonly around $4,000-$7,000 and dealer repairs often higher. Continuing to drive with startup rattle or timing faults risks chain jump and catastrophic valve-to-piston engine damage.
What Owners Are Using
Parts and tips from 0+ owners who fixed this issue
- UpgradeComplete timing chain kit includes chains, guides, and tensioners (Cloyes Timing Chain Kit)
- UpgradeHigh-quality engine oil is critical after timing service (Castrol Edge Full Synthetic Motor Oil)