What year Audi S4 is most reliable?

Based on MOT first-test pass rates, the 2009 Audi S4 has the highest pass rate at 89.0%, out of 151 vehicles tested.

What are the most common Audi S4 MOT failures?

The most common Audi S4 MOT failures vary by year. Check the individual year pages for detailed defect breakdowns — links in the table above.

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Audi S4 — Reliability by Year

1,547 vehicles · MOT data 1999–2011 · first-test pass rates

This page shows MOT first-test pass rates for each year the Audi S4 was manufactured — click any year to explore that cohort in detail. Trying to decide which year to buy? See the full buying guide →

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Best pass rate year

2009

89.0% pass rate · 151 vehicles

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Lowest pass rate year

1999

73.0% pass rate · 161 vehicles

Year	Pass rate	Avg mileage	Vehicles
2011	86.7%	65,681 mi	159
2010	87.3%	69,927 mi	194
2009	89.0%	68,751 mi	151
2007	82.5%	65,991 mi	111
2006	82.9%	70,204 mi	174
2005	81.4%	74,416 mi	216
2004	80.4%	75,090 mi	258
2000	73.3%	115,723 mi	123
1999	73.0%	120,508 mi	161

Which year Audi S4 is most reliable?

MOT pass rate by year of manufacture — averaged across each vehicle's lifetime of tests. Green = noticeably above average for this model; red = noticeably below average.

Tests range from an average of 65,681 miles (newest year) to 120,508 miles (oldest year). Older years naturally accumulate more tests at higher mileages — see the mileage-normalised breakdown →

Trying to decide which year to buy?

We've done the full analysis — which years to look for, which to avoid, and where to find the best value for reliability on a Audi S4.

See the buying guide →

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