BMW 3 Series MOT pass rate and common problems
82.6% of 902,085 BMW 3 Series MOT tests pass.
At 82.6%, the 3 Series passes slightly less often than the average across all BMW models (85.5%).
The BMW 3 Series has a pass rate of 82.6%, a little higher than the national average for cars (79.2%).
Own this BMW 3 Series?
This is the average across every BMW 3 Series in the dataset. Look up your own registration for its actual MOT history, and a free place to keep its maintenance records.
Have service invoices? Upload and keep them with your car’s history →
How to check and keep your BMW’s service history →
Pass rate by vehicle age
Pass rate declines noticeably with age, from 89.0% at 0–3 years to 76.0% at 15+ years.
| Vehicle age | Pass rate | Tests | Average mileage |
|---|---|---|---|
| 0–3 years | 89.0% | 36,897 | 34,354 miles |
| 3–6 years | 91.0% | 139,329 | 46,726 miles |
| 6–10 years | 88.2% | 214,796 | 80,756 miles |
| 10–15 years | 79.0% | 258,558 | 112,654 miles |
| 15+ years | 76.0% | 252,505 | 124,842 miles |
Common MOT failure reasons for the BMW 3 Series
The most common reason the BMW 3 Series fails its MOT is lamps, reflectors and electrical equipment — present in 42.9% of failed tests, most often logged as "Not working".
| Category | Share of failed tests | Example |
|---|---|---|
| Lamps, reflectors and electrical equipment | 42.9% | Not working |
| Tyres | 32.6% | Tread depth below requirements of 1.6mm |
| Brakes | 31.5% | Efficiency below requirements |
| Suspension | 31.4% | Has a serious fluid leak |
| Visibility | 12.6% | Provides insufficient washer liquid |
| Noise, emissions and leaks | 11.4% | Inoperative or indicates a malfunction |
| Body, chassis, structure | 5.3% | Has a major leak of exhaust gases |
| Road Wheels | 4.8% | Fixing missing |
| Seat belts and supplementary restraint systems | 3.7% | Warning lamp indicates a fault |
| Steering | 2.4% | Ball joint has excessive play |
Buying a used BMW 3 Series: what to check
These checks follow the BMW 3 Series’s own MOT record: the areas it fails on most often, and how that changes as the car gets older. None of them replaces a mechanic’s inspection, but they tell you where to look first.
The biggest drop in pass rate for the BMW 3 Series comes between 6–10 years and 10–15 years old, from 88.2% to 79.0%. If you are looking at one in or just past that range, read its MOT history closely.
By mileage, the steepest fall is from 60,000–90,000 mi to 90,000–120,000 mi: 84.8% down to 79.5%. Mileage matters as well as age, so compare the car’s recorded mileages with its year.
1. Lights and electrics
Recorded in 42.9% of failed BMW 3 Series MOTs. 14.4% of tests at 15+ years failed on lights and electrics, against 2.7% at 0–3 years.
Walk round with the lights on: headlights (dipped and main), indicators, brake lights, fog light and number-plate lamp. Check the dashboard warning lights come on with the ignition, then go out once the engine starts.
2. Tyres
Recorded in 32.6% of failed BMW 3 Series MOTs.
Check tread depth across the whole width of every tyre, including the inner edge. Uneven wear can point to alignment or suspension problems. Look for cuts and bulges in the sidewalls.
3. Brakes
Recorded in 31.5% of failed BMW 3 Series MOTs. 14.4% of tests at 15+ years failed on brakes, against 0.5% at 0–3 years.
On the test drive, the car should stop straight without pulling or juddering, and the handbrake should hold it on a slope. Look through the wheels for scored or heavily lipped discs.
4. Suspension
Recorded in 31.4% of failed BMW 3 Series MOTs. 13.3% of tests at 15+ years failed on suspension, against 0.6% at 0–3 years.
Listen for knocks over bumps and speed humps, and check the car sits level. Push down on each corner: it should settle rather than keep bouncing.
5. Windscreen and wipers
Recorded in 12.6% of failed BMW 3 Series MOTs. 4.6% of tests at 15+ years failed on windscreen and wipers, against 0.9% at 0–3 years.
Look for windscreen chips and cracks in the driver’s line of sight, and check the wipers clear the screen and the washers work.
Check the car’s own MOT history. Averages describe the model, not the car in front of you. Look up its registration for past failures, advisories that were never fixed, and gaps or dips in the recorded mileage.
Ask for the service history. Invoices show what was done and when; a stamp alone shows less. See how to check BMW service history and what a service history check can tell you.
Related BMW models
- BMW 1 Series — 83.7% pass rate
- BMW 5 Series — 85.0% pass rate
- BMW 2 Series — 89.3% pass rate
- BMW 4 Series — 88.9% pass rate
- BMW X5 — 86.7% pass rate
- BMW X3 — 86.5% pass rate
Frequently asked questions
- What is the MOT pass rate for the BMW 3 Series?
- 82.6% of BMW 3 Series MOT tests pass, based on 902,085 tests in the DVSA anonymised MOT tests and results dataset.
- What are the most common MOT failures for the BMW 3 Series?
- The most common reason the BMW 3 Series fails its MOT is lamps, reflectors and electrical equipment — present in 42.9% of failed tests, most often logged as "Not working".
- What are the common problems with the BMW 3 Series?
- Going by its MOT results, the most common problem areas on the BMW 3 Series are lights and electrics; tyres; brakes. 14.4% of tests at 15+ years failed on lights and electrics, against 2.7% at 0–3 years.
- What should I check when buying a used BMW 3 Series?
- Start with the areas it most often fails its MOT on: lights and electrics; tyres; brakes; suspension; windscreen and wipers. Then check the specific car's MOT history by registration for failures, advisories and mileage, and ask the seller for service invoices.
- Does this show the BMW 3 Series's service history?
- No — this is MOT test data, which covers roadworthiness, not servicing. A service history is a separate record of maintenance work, which a specific car only has if its owner has kept it. See the BMW service history guide for how to check and keep one.