Audi S4: MOT pass rate and reliability data

The Audi S4 passes its MOT first time more often than the average UK car, by 5 percentage points. These figures come from the DVSA's full year of anonymised MOT results, covering 1,117 individual Audi S4 tests. Nothing here is an estimate or a survey.

The numbers

What this means if you are buying one

A 81.7% first-time pass rate means roughly 18 in every 100 Audi S4s presented for MOT fail on the first attempt. That is better than average, so a well-kept example is a reasonably safe used buy. The average Audi S4 tested had covered 98,619 miles and was built around 2008.

What this means at salvage auction

Pass rate is a proxy for what a car costs to keep on the road. On a Audi S4 bought as a repairable salvage, the mechanical side is less likely to spring surprises, so your repair estimate should hold up reasonably well.

Before you bid: run the lot through the analyzer, check the car's own record, check the mileage, decode the VIN, and if it carries a marker use the write-off value calculator. Or compare it against another model.

Looking at a specific Audi S4 rather than the model in general? The free check covers its MOT and mileage history, and the full HPI report confirms the insurance write-off category, outstanding finance and whether it is recorded stolen, from licensed data for 5 credits. Already own one that has been damaged? Work out whether fixing it beats selling it with the repair or scrap calculator, and see what damaged Audi S4s actually sold for at UK salvage auction.

Most common MOT failures on a Audi S4

1. A suspension pin, bush or joint excessively worn, 5.3% of tests (1.45x the national rate for this defect)
2. A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc, 1.5% of tests (1.3x the national rate for this defect)
3. A tyre seriously damaged, 1.7% of tests
4. A spring or spring component fractured or seriously weakened, 1.5% of tests
5. Tyre tread depth not in accordance with the requirements, 1.4% of tests
6. A tyre cords visible or damaged, 1.3% of tests
7. A suspension joint dust cover missing or no longer prevents the ingress of dirt etc, 1% of tests
8. Windscreen washers not working or not providing sufficient fluid to clear the windscreen, 1% of tests
9. The aim of a headlamp is not within limits laid down in the requirements, 0.9% of tests
10. a brake lining or pad worn below 1.5mm, 0.8% of tests

From 2,061 DVSA-tracked Audi S4 tests, 2024. DVSA testers marked 4.23% of these flagged Audi S4 defects as "dangerous", meaning the tester judged the car unsafe to drive away, against 4.97% nationally.

Other Audi models

• Audi A3 - 78.1%
• Audi A4 - 76.3%
• Audi A1 - 79.5%
• Audi A6 - 81.9%
• Audi A5 - 80.4%
• Audi Tt - 78.8%
• Audi Q3 - 83.5%
• Audi Q5 - 84.8%

Models with a similar pass rate

• Ford Tourneo Connect - 81.7%
• Kia Optima - 81.7%
• Audi S5 - 81.7%
• BMW 1 Series - 81.6%
• Tesla Model X Perform Ludicrous Awd - 81.6%
• Toyota Iq - 81.5%

If this car is a salvage or write-off

• What does Cat N mean? Category N explained
• What does Cat S mean? Category S explained
• Cat S vs Cat N: the real differences

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All 2,005 models ranked by MOT pass rate