Add RegFlags to your home screen
Open RegFlags straight from your home screen when you want to check a car.
On Android, use Install RegFlags when it appears, or pick Install app or Add to Home screen from your browser's menu.
On iPhone or iPad, open this site in Safari, tap Share, then Add to Home Screen. Keep Open as Web App on if it appears, then tap Add.
BMW 635 MOT reliability
BMW 635s passed their MOT first time 78% of the time across 1,778 tests in 2025.
First-time pass rate
78%
MOTs analysed
1,778
Still licensed (GB)
–
Body type
–
Pass rate by year of first registration
In detail:
First registered
2009
2009 diesel
359 MOTs
Passed first time 73%. Typical mileage 122,468 (most between 99,254 and 152,650).
2011: 100% → 2012: 81% → 2013: 83% → 2014: 81% → 2015: 80% → 2016: 77% → 2017: 82% → 2018: 78% → 2019: 76% → 2020: 79% → 2021: 76% → 2022: 74% → 2023: 76% → 2024: 75% → 2025: 73%
Most common failures
- Ball joint excessively worn (3.9%)
- Rbt (sp): efficiency below requirements (3.1%)
- Track rod end: ball joint has excessive play (3.1%)
- Coil spring: fractured or broken (3.1%)
- Condition: has ply or cords exposed (2.5%)
2009 petrol
3 MOTs
Passed first time 67%. Typical mileage 100,113 (most between 84,503 and 140,935).
2011: 100% → 2012: 86% → 2013: 80% → 2014: 63% → 2015: 100% → 2016: 92% → 2017: 89% → 2018: 78% → 2019: 67% → 2020: 86% → 2021: 71% → 2022: 83% → 2023: 100% → 2024: 100% → 2025: 67%
Most common failures
- Track rod end: ball joint has excessive play (33.3%)
Where 2009 635s fail
Suspension & axles
10.9%
Lights & electrics
6.7%
Wheels & tyres
6.4%
Brakes
5.6%
Steering
3.9%
Visibility & wipers
3.1%
Exhaust, emissions & leaks
0.8%
Seat belts & other equipment
0.6%
Looking at a particular car?
See its own MOT history, mileage and red flags, compared with these figures. Free.