1991 BMW 3 Series (first used 1991) MOT pass rate, common failures & what to check
In 2025, 79.9% of BMW 3 Series cars first used in 1991 passed their MOT first time, against 71.5% for all cars first used in 1991. Across 2,249 3 Series first tests from 2023 to 2025, the most common failure areas were lamps and electrical equipment, suspension and brakes.
This page analyses first MOT tests for BMW 3 Series cars first used in 1991 (all trims grouped): 2021 to 2025 for the pass-rate trend, and 2023 to 2025 for the failure and advisory analysis — plus what is worth checking before you buy one.
Data: DVSA anonymised MOT tests to December 2025 · Calculated by SortedCars · Updated October 2026
How the 1991 BMW 3 Series MOT pass rate has changed
Share of first tests passed in each year, 3 Series cars first used in 1991 against all cars first used in 1991 (any make or fuel; not adjusted for mileage, fuel or use). In 2025 the 3 Series figure was 8.4 points higher.
View this chart as a table
| Test year | 1991 3 Series | All cars first used 1991 | 3 Series first tests |
|---|---|---|---|
| 2021 | 71.7% | 66.5% | 869 |
| 2022 | 74.9% | 67.9% | 846 |
| 2023 | 77.4% | 69.9% | 788 |
| 2024 | 77.3% | 70.6% | 743 |
| 2025 | 79.9% | 71.5% | 718 |
Common 1991 BMW 3 Series MOT failures
Share of the 491 failed first tests (2023–2025) with at least one failure in each area. A test can fail in more than one area, so the shares add up to more than 100%.
Most common failure items
| DVSA failure item | Share of failed first tests | Tests |
|---|---|---|
| Headlamp aim: too low | 14.9% | 73 |
| Position lamp: not working | 12.4% | 61 |
| Individual direction indicators: not working | 11.4% | 56 |
| Component mounting prescribed areas: prescribed area excessively corroded significantly reducing structural strength | 10.4% | 51 |
Item names are DVSA’s own wording. 2023–2025 combined.
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What to check on a 1991 BMW 3 Series before buying
The three areas where failed first tests most often had a fault, 2023–2025.
- Lamps and electrics. Ask someone to watch while you work the brake lights, indicators, sidelights, dipped and main beam, and the number-plate lamps.
- Suspension. Worth looking behind the front wheels with a torch at the coil springs, and listening for knocks over bumps on the test drive.
- Brakes. Worth looking at the discs and pads through the wheel spokes for scoring and a worn lip, and noticing on the test drive whether the car pulls to one side or the pedal feels long.
Common 1991 BMW 3 Series MOT advisories
Advisories are points the tester noted that did not fail the car. Most common on 1991 3 Series cars, as a share of all 2,249 first tests, 2023–2025.
| DVSA advisory item | Share of first tests | Tests |
|---|---|---|
| Engine oil leaks: leak, but not excessive | 11.1% | 250 |
| Rigid brake pipes: corroded, covered in grease or other material | 10.7% | 240 |
| Suspension arm pins and bushes: pin or bush worn but not resulting in excessive movement | 7.3% | 165 |
| Tyre condition: slightly damaged/cracking or perishing | 6.3% | 142 |
| Tread depth: worn close to legal limit/worn on edge | 5.1% | 115 |
Questions about the 1991 BMW 3 Series MOT
What is the MOT pass rate of a 1991 BMW 3 Series?
In 2025, 79.9% of 3 Series cars first used in 1991 passed their MOT first time, against 71.5% for all cars first used in 1991. A car fixed during the test counts as a fail.
What does a 1991 3 Series most often fail its MOT on?
Lamps and electrical equipment (in 55.2% of failed first tests, 2023–2025), suspension (32.0%) and brakes (30.3%). The single most common item was “Headlamp aim: too low” (14.9%).
How often does a 1991 BMW 3 Series fail its MOT?
In 2025, 20.1% of first tests on 3 Series cars first used in 1991 did not pass first time: 15.7% failed, and a further 4.3% had a fault fixed during the test (counted as a fail here). Across 2023–2025, 491 of 2,249 first tests did not pass first time.
What are the most common 1991 BMW 3 Series MOT advisories?
“Engine oil leaks: leak, but not excessive” (on 11.1% of first tests, 2023–2025), “Rigid brake pipes: corroded, covered in grease or other material” (10.7%), “Suspension arm pins and bushes: pin or bush worn but not resulting in excessive movement” (7.3%), “Tyre condition: slightly damaged/cracking or perishing” (6.3%) and “Tread depth: worn close to legal limit/worn on edge” (5.1%).
Is a 1991 BMW 3 Series reliable?
An MOT pass rate shows what failed at the test, not how reliable a car is. For this group of cars the first-time pass rate went from 71.7% in 2021 to 79.9% in 2025. For one particular car, its own MOT history matters more than the average.
Other cars first used in 1991
The most-tested cars from the same year. Each page uses the same method.
1991 Land Rover Defender MOT statistics · 1991 Volkswagen Golf MOT statistics · 1991 Rover Mini (classic) MOT statistics · 1991 Volkswagen Transporter MOT statistics · 1991 Mazda MX-5 MOT statistics
Checking a specific 1991 3 Series?
The numbers above cover every 3 Series first used in 1991 and tested in Great Britain. Our free check shows the actual MOT history, mileage record and tax status of the one you are looking at.
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