BMW 523 MOT Pass Rate
71.6% of 1,153 BMW 523 MOT tests pass.
The 523 passes 71.6% of the time, noticeably below the figure for the average across all BMW models (84.8%).
The BMW 523 passes 71.6% of the time, noticeably below the figure for the national average for cars (78.3%).
Pass rate by vehicle age
Pass rate declines noticeably with age, from 84.1% at 10–15 years to 67.7% at 15+ years.
| Vehicle age | Pass rate | Tests | Average mileage |
|---|---|---|---|
| 0–3 years | no tests recorded | 0 | no reading |
| 3–6 years | no tests recorded | 0 | no reading |
| 6–10 years | too few tests (28) | 28 | no reading |
| 10–15 years | 84.1% | 232 | 77,604 miles |
| 15+ years | 67.7% | 893 | 129,838 miles |
Common MOT failure reasons for the BMW 523
The most common reason the BMW 523 fails its MOT is lamps, reflectors and electrical equipment — present in 46.4% of failed tests, most often logged as "not working".
| Category | Share of failed tests | Example |
|---|---|---|
| Lamps, reflectors and electrical equipment | 46.4% | not working |
| Brakes | 46.1% | efficiency below requirements |
| Suspension | 44.2% | ball joint dust cover no longer prevents the ingress of dirt |
| Tyres | 24.2% | tread depth below requirements of 1.6mm |
| Noise, emissions and leaks | 23.9% | inoperative or indicates a malfunction |
| Visibility | 17.8% | not working |
| Body, chassis, structure | 13.1% | corroded to the extent that the rigidity of the assembly is significantly reduced |
| Steering | 11.4% | gaiter missing or no longer prevents the ingress of dirt |
| Seat belts and supplementary restraint systems | 6.7% | warning lamp indicates a fault |
| Road Wheels | 2.8% | fixing missing |