AUDI S4 MOT Pass Rate
90.6% of 4,677 AUDI S4 MOT tests pass.
The S4 passes its MOT 90.6% of the time — well above the average across all AUDI models, which sits at 84.5%.
The AUDI S4 passes its MOT 90.6% of the time — well above the national average for cars, which sits at 79.2%.
Pass rate by vehicle age
Pass rate declines noticeably with age, from 95.4% at 0–3 years to 80.3% at 15+ years.
| Vehicle age | Pass rate | Tests | Average mileage |
|---|---|---|---|
| 0–3 years | 95.4% | 283 | 29,125 miles |
| 3–6 years | 94.8% | 2,345 | 42,120 miles |
| 6–10 years | 85.4% | 206 | 70,054 miles |
| 10–15 years | 90.0% | 900 | 93,400 miles |
| 15+ years | 80.3% | 943 | 111,398 miles |
Common MOT failure reasons for the AUDI S4
The most common reason the AUDI S4 fails its MOT is suspension — present in 38.1% of failed tests, most often logged as "Pin or bush excessively worn".
| Category | Share of failed tests | Example |
|---|---|---|
| Suspension | 38.1% | Pin or bush excessively worn |
| Tyres | 37.5% | Has a cut in excess of the requirements deep enough to reach the ply or cords |
| Lamps, reflectors and electrical equipment | 30.8% | Not working |
| Noise, emissions and leaks | 14.5% | Inoperative or indicates a malfunction |
| Brakes | 13.7% | Less than 1.5 mm thick |
| Body, chassis, structure | 8.9% | Constant velocity boot split or insecure, no longer prevents the ingress of dirt |
| Visibility | 8.3% | Does not clear the windscreen effectively |
| Identification of the vehicle | 4.4% | Does not conform to the specified requirements |
| Seat belts and supplementary restraint systems | 3.3% | Warning lamp indicates a fault |
| Steering | 1.4% | Ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt |