Reliability AnalysisBased on known issue patterns, repair cost data, and ownership trends · How we score

2008 Audi S4 Reliability ReportD grade · high risk · system-by-system breakdown

45/ 100

KeepScore

HIGH RISK

Grade: D

A thrilling performance machine with a major Achilles' heel, demanding serious financial commitment and mechanical foresight.

Full system breakdown + what I would do

Quick Facts · 2008 Audi S4

  • The system most likely to surface first: engine timing system (critical severity).
  • No active NHTSA safety recalls on record — a clean recall slate for the 2008 model year.
  • Scores 27 points below the strongest nearby year — the 2010 Audi S4 earns a 72.

Is the 2008 Audi S4 Worth Buying?

The 2008 Audi S4 is an intoxicating performance sedan with its powerful V8, but it's also a ticking time bomb. The catastrophic timing chain guide failure on the 4.2L FSI engine looms as an ever-present threat, demanding significant financial preparedness or a deep well of DIY expertise. This isn't a car you buy for peace of mind; it's a passionate affair with potentially heartbreaking expenses.

Biggest Strengths

  • Potent V8 performance and exhaust note
  • Sophisticated Quattro AWD system
  • High-quality, durable interior finishes

What Tends to Fail First on the 2008 Audi S4

The systems that break first on the 2008 Audi S4. Mileage windows, repair costs, and fix-before-you-buy notes are in the full report.

1
Engine Timing Systemcritical
2
Fuel System & Intakemoderate
3
Oil Leaks & PCV Systemmoderate
Typical mileage, cost ranges, and the exact what-to-check list are in the full report.

2008 Audi S4 Recall History

No active NHTSA safety recalls on file for the 2008 Audi S4. Always verify with your VIN atnhtsa.gov.

What breaks on the 2008 Audi S4?

Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.

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Other Audi S4 Years to Consider

Compare KeepScores across nearby years of the Audi S4. Click any year for its full report.

2008 Audi S4 Alternatives

Similar class, similar year range — ranked by KeepScore.

Relevant Products for Your 2008 Audi S4

Parts and accessories matched to your 2008 Audi S4

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Frequently Asked Questions

Full Report

2008 Audi S4

7-system breakdown, mileage danger zones, repair cost projections, buyer checklist, and expert verdict.

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Final Step

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Just bought a 2008 Audi S4? Keep it that way.

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