Pass rate
89.3%
Above average — 1.9 pts behind the 91.2% that cars this age and mileage manage.
Across 1,105 recorded tests.
Typical repair bill £46–£103
2021 BMW 330D MOT pass rate
- 2021
- 2 trims combined
- typical 35,851 mi
Check your postcode
Most common fault
Tyres
55.3% of faults · 19.8% nationally
mostly tread below the limit, cuts and sidewall bulges.
Part only £55–£85 for Tread depth below 1.6 mm. What fitting it takes →
Which year to buy
- Best 2019 90.7% pass
- Avoid 2022 87.4% pass
Across the 4 years on record, a spread of 3.3 points. See every year →
- First-attempt pass
- 88.1%
- Typical mileage
- 36k mi
The 2021 BMW 330D MOT pass rate is 89.3% of its MOT tests — 1.9 points behind what its age and mileage predict. Tyres is the biggest single reason it fails, at 55.3% of what testers record.
Expert verdict
Tyres: 2.8× the national share
Tyres make up 55.3% of everything recorded on the 2021 BMW 330d, against 19.8% nationally — 35.5 points above. Check all four tyres yourself, including the inner shoulders, and look at the date stamp — a tyre can pass on tread and still be six years old.
- When it fails, it costs. Only 9% of this model’s typical repairs come in under £30 in parts — the failures here tend to be the kind that need a garage rather than a bulb.
Written from this page's own figures: fault shares against the national composition, the like-for-like pass rate, and the priced repair list. How these are worked out
Watching a BMW 330D? Get an email when these numbers change .
Every BMW 330D first registered in 2021 is combined here — 2 trim and body variants in total — so the sample is as large as the DVSA data allows.
How does the 2021 BMW 330D compare?
Cars of this age and mileage average 91.2%, so this figure is 1.9 points behind what its age and mileage predict. On a first attempt, before any retests, the figure drops to 88.1%. The median 2021 BMW 330D in this dataset had covered 35,851 mi.
98% of the tests on this vehicle ran on Other, which passed 89.3% of the time. Pass rates also shift with the test month: tests recorded October–March passed 91.1% of the time, April–September 88.1%.
The single most recorded failure item is "Has a bulge, caused by separation or partial failure of its structure", noted on 2.44% of tests.
- 1,105 recorded tests behind this page.
- 89.3% overall pass rate, 88.1% on a first attempt.
- Across every year of the BMW 330D, the average is 88.8% — best year 2019 (90.7%), worst 2022 (87.4%).
Figures count every completed test on this vehicle-year in the dataset, including retests. See methodology for the exact definition.
This page's data
- Tests analysed
- 1,105
- Typical mileage (median)
- 35,851 mi
- Make and model
- BMW 330D
- Updated
- 2026-11-07
Source: DVSA anonymised MOT test data (2023–2025), OGL v3.0.
Top part to budget for
Tyres
Usually a DIY or independent-garage job.
Does mileage affect the 330D MOT pass rate?
Pass rate by odometer reading. Bar lengths start at 77% so small gaps stay visible.
Fuel type and reliability
Pass rate by fuel type. Other is the most common here (98% of tests).
Where the BMW 330D is most common
Across all 330D model years on record (2019–2022): 1,596 BMW 330D cars tested in a recordable postcode area, across 2,613 tests. Birmingham (B) has the most, with 50 cars tested there. Cars are counted by the postcode area of the MOT station, so this is where they were tested, not necessarily where their owners live.
| # | Postcode area | Cars | Pass rate |
|---|---|---|---|
| 1 | Birmingham (B) | 50 | 87.8% |
| 2 | Nottingham (NG) | 37 | 90.3% |
| 3 | Guildford (GU) | 37 | 91.4% |
| 4 | Reading (RG) | 34 | 84.2% |
| 5 | Bristol (BS) | 31 | 90.7% |
| 6 | Leicester (LE) | 31 | 88.0% |
| 7 | Peterborough (PE) | 31 | 95.9% |
| 8 | Hereford (HR) | 30 | 76.3% |
| 9 | Chelmsford (CM) | 28 | 80.4% |
| 10 | High Wycombe (HP) | 27 | 88.0% |
| 11 | Shrewsbury (SY) | 27 | 93.6% |
| 12 | Coventry (CV) | 27 | 89.1% |
| 13 | Swansea (SA) | 25 | 90.2% |
| 14 | York (YO) | 25 | 97.2% |
| 15 | Stockport (SK) | 24 | 81.8% |
| 16 | Edinburgh (EH) | 24 | 87.5% |
| 17 | Middlesbrough (TS) | 24 | 94.3% |
| 18 | Leeds (LS) | 24 | 85.3% |
| 19 | Ashford (TN) | 23 | 82.6% |
| 20 | Sheffield (S) | 23 | 89.2% |
The twenty areas with the most BMW 330D cars in the record, sorted by car count — sort the columns for a different question. Cars tested at a station whose postcode area could not be resolved are counted in the model's total but in no area, so the shares add up to slightly under 100% even across every area, and an area's cars are a subset of the model's. Pass rate is blank below 30 tests in an area, where a percentage is noise rather than a finding. How this model's pass rate varies by postcode →
Regional pass rates for the 330D
| Region | Tests | Pass rate |
|---|---|---|
| South East | 210 | 88.6% |
| North West | 162 | 90.1% |
| West Midlands | 132 | 84.1% |
| East of England | 130 | 91.5% |
| Yorkshire | 124 | 89.5% |
| South West | 115 | 87.0% |
| Scotland | 70 | 92.9% |
| Wales | 57 | 89.5% |
| East Midlands | 53 | 92.5% |
| North East | 37 | 94.6% |
| London | 15 | 93.3% |
Regions come from the postcode area recorded at the test station. Areas on region borders are assigned to the region with the majority of their population.
What fails a 2021 330D
Everything a tester recorded on this vehicle, grouped into the inspection sections that produced it. The notch on each bar is the national share, so you can see at a glance whether this car is unusual or just ordinary.
A test can record several items, so these percentages do not add up to 100%. The exact strings, with prices, are in the full DVSA record at the bottom of this page.
Before your test
Three checks worth doing on a 2021 330D
These are not generic tips — they are the faults recorded most often on this exact model, rewritten as things you can check yourself. All three take about ten minutes and cost nothing.
-
Check the windscreen 1.9% of tests
“windscreen damaged”
Check the driver’s side of the screen within the swept area for chips and cracks; anything larger than 10mm in the driver’s central view is a fail. Most chips can be resin-repaired for far less than a new screen.
-
Check the tyre tread 1.3% of tests
“tread depth below requirements of 1.6mm”
Check all four tyres cold, including the inner shoulder where wear hides — 1.6mm across the central three-quarters is the legal limit, and most testers fail at 1.6mm without argument.
-
Check the lights 0.8% of tests
“headlamp aim too high”
Switch everything on and walk round the car: both headlamps on dip and main, every indicator, both brake lights, reverse, fog and the two number-plate lamps. A bulb is a few pounds and a five-minute job.
Shares are the proportion of tests on this vehicle that recorded the item, so they overlap: one test can record several.
What it costs to get a 2021 330D through its MOT
Across the 10 items that are recorded most often on this model, the average repair comes to £46–£103 — and 9% of those repairs are parts that cost under £30.
- Average repair across the 10 common items
- £46–£103
- Cheapest common item: malfunction indicator lamp inoperative or…
- £3–£12
- Dearest common item: windscreen damaged
- £80–£200
- Common items a careful owner can do at home
- 80%
- Repairs that still cost under £30
- 9%
Estimates from typical UK parts prices, weighted by how often each item appears in 1,105 MOT tests on this vehicle. They exclude diagnostics, retest fees and garage labour where the part is a DIY fit, and they are not figures from the DVSA dataset. Older and higher-mileage examples cost more than the average. How these estimates are built → · All MOT repair costs → · Cheapest cars to put through a test →
Every year of the 330D, side by side
4 model years on record, from 2019 to 2022. Across them the pass rate runs from 87.4% to 90.7% — a spread of 3.3 points. The bar under each year is the item that failed it most often.
- 2019 90.7% has a cut in excess of the…
- 2020 87.5% windscreen damaged but not…
- 2021 89.3%has a bulge, caused by separation…
- 2022 87.4% has a bulge, caused by separation…
Colour is the pass rate on a fixed scale, so a block means the same thing on any model. Each year links to its own page with the full fault breakdown.
Compare the 2021 BMW 330D with another year
The raw pass rate mostly measures age. The year comparison adds the like-for-like figure, the mileage bands and the repair bill.
Other 2021 cars with a similar record
- Peugeot 5008 89.2%
- MG Zs Excite Vti-Tech 89.2%
- Hyundai I10 89.4%
- Polestar Polestar 89.4%
- Skoda Superb 89.1%
- Mercedes-Benz Cla 89.6%
Closest pass rates among 2021 cars with at least 2,000 tests, so a small sample cannot flatter itself into the list. See the full rankings: best and worst MOT pass rates.
The full DVSA record for the 2021 BMW 330D 10 failure items · 6 advisories · 10 inspection categories · mileage brackets · all of it in the page, none of it above the fold
Every inspection category
Shares of the 466 individual items recorded on this vehicle, and the same share across all cars nationally. A single test can record several items, so a row is not a percentage of tests.
| Category | Items | This car | Nationally | Difference |
|---|---|---|---|---|
| Tyres | 261 | 55.30% | 19.76% | +35.54 |
| Non-component advisories | 42 | 8.90% | 4.18% | +4.72 |
| Suspension | 39 | 8.30% | 20.98% | −12.68 |
| Visibility | 38 | 8.10% | 4.97% | +3.13 |
| Lamps, reflectors and electrical equipment | 21 | 4.40% | 12.21% | −7.81 |
| Brakes | 16 | 3.40% | 20.89% | −17.49 |
| Noise, emissions and leaks | 16 | 3.40% | 5.52% | −2.12 |
| Road Wheels | 16 | 3.40% | 0.75% | +2.65 |
| Seat belts and supplementary restraint systems | 11 | 2.30% | 0.82% | +1.48 |
| Steering | 6 | 1.30% | 2.57% | −1.27 |
The exact failure items, in the tester's words
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Has a bulge, caused by separation or partial failure of its structure Tyres | Major | 2.4% | £45–95 |
| Has ply or cords exposed Tyres | Major | 1.9% | £45–95 |
| Windscreen damaged but not adversely affecting driver's view Visibility | Minor | 1.9% | £80–200 |
| Has a cut in excess of the requirements deep enough to reach the ply or cords Tyres | Major | 1.8% | £45–95 |
| Tread depth below requirements of 1.6mm Tyres | Major | 1.3% | £45–95 |
| Headlamp aim too high Lamps, reflectors and electrical equipment | Rectified | 0.81% | £30–80 |
| Has a lump, caused by separation or partial failure of its structure Tyres | Major | 0.72% | £45–95 |
| Malfunction indicator lamp inoperative or indicates a malfunction Noise, emissions and leaks | Major | 0.72% | £3–12 |
| Has a tear, caused by separation or partial failure of its structure Tyres | Major | 0.54% | £45–95 |
| Wipers does not clear the windscreen effectively Visibility | Major | 0.45% | £8–22 |
Severity is as recorded: Major and Dangerous fail the test outright; Minor and Advisory do not. Costs are estimates from typical UK parts prices — see how they are built.
What testers noted without failing the car
Advisories are the early warnings — the same parts a year or two before they fail. Reading them is how you tell a car that has been maintained from one that has been patched.
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Tread depth below requirements of 1.6mm Tyres | Advisory | 10.2% | £45–95 |
| Non-component advisories Child Seat fitted not allowing full inspection of adult belt Non-component advisories | Advisory | 2.1% | £20–80 |
| Has a cut in excess of the requirements deep enough to reach the ply or cords Tyres | Advisory | 2.0% | £45–95 |
| Shock absorbers has a serious fluid leak Suspension | Advisory | 1.6% | £30–75 |
| Non-component advisories Nail in tyre Non-component advisories | Advisory | 1.4% | £45–95 |
| Badly distorted Road Wheels | Advisory | 1.4% | £20–55 |
Pass rate by mileage
| Mileage | Tests | Pass rate | Median odometer |
|---|---|---|---|
| 0-30k | 407 | 90.2% | 22,029 mi |
| 30-60k | 507 | 88.8% | 41,807 mi |
| 60-90k | 113 | 91.2% | 71,524 mi |
| 90-120k | 54 | 85.2% | 103,049 mi |
| 120k+ | 24 | 87.5% | 139,516 mi |
Source: 1,105 recorded tests on this vehicle-year. Every row above is recomputed from the same DVSA extract as the rest of the page — see the methodology.
2021 330D MOT questions
What is the MOT pass rate for a 2021 BMW 330D?
89.3% of the 1,105 2021 BMW 330D tests in this dataset passed, against a national average of 91.2% for cars first used in 2021. First-attempt pass rate: 88.1%.
What are the most common MOT failures on a 2021 BMW 330D?
The three most recorded items are has a bulge, caused by separation or partial failure of its structure (2.44%), has ply or cords exposed (1.90%), windscreen damaged but not adversely affecting driver's view (1.90%). Percentages are the share of tests on this vehicle that recorded the item.
Does mileage affect the 2021 BMW 330D MOT pass rate?
Yes. Cars under 30,000 miles passed 90.2% of the time, falling to 87.5% for those over 120,000 miles. The median 2021 BMW 330D in this dataset had covered 35,851 mi.
Which fuel type is most reliable for a 2021 BMW 330D?
Other: 89.3% pass rate across 1,088 tests. Diesel: 88.2% pass rate across 17 tests. Shares are of the tests on this vehicle that recorded each fuel type.
Does the season affect the 2021 BMW 330D MOT pass rate?
Tests recorded in the winter months (October–March) passed 91.1% of the time; summer months (April–September) passed 88.1%. Brakes, tyres and lights are tested harder in bad weather, but the difference is small on most models.