BMW 330 (2021)
2021 BMW 330
CarHunch analysed 205 real MOT records for the 2021 BMW 330. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 2021 BMW 330 is a genuinely reliable first-time MOT performer, passing at 91.7% versus the UK average of 80%—a significant 11.7-point margin that puts it in the upper tier for its age and class. The dangerous defect rate sits at 11.7%, which is acceptable rather than alarming, and poses no major buyer concern.
These vehicles are running at sensible mileage for their age (46,300 miles average), which tracks well with normal use. The low failure rate of 0.28 per vehicle combined with modest advisories of 1.4 suggests straightforward maintenance rather than structural gremlins—so if you're considering one, focus your inspection on routine servicing history and brake wear rather than deeper mechanical worries.
What to check before buying a 2021 BMW 330
Practical pre-purchase checks for this age and model.
- 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
- 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
- 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
- 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.
Before you buy a BMW 330
MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Hybrid Electric (Clean) (94%) | 193 | 91.6% | 0.29 |
| Petrol (2%) | 5 | 95% | 0.2 |
| Diesel (2%) | 5 | 88.3% | 0.4 |
| Electric Diesel (0%) | 1 | 100% | 0 |
| Electric (0%) | 1 | 100% | 0 |
Mileage Distribution
Most 2021 BMW 330 vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 2021 BMW 330 vehicles fall between 33,404 and 57,444 miles.
2021 BMW 330 — Still on the Road
Strong survival — 184 vehicles still getting MOTs in 2025, 98% of the peak.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2023–2025.
MOT History Averages
Most Common MOT Issues — 2021 BMW 330
Based on actual MOT test records for this model. Percentage shows how often each item appears across all vehicles in this cohort.
-
26.6%
Nearside Rear Tyre worn close to legal limit/worn on edge
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25.8%
Offside Rear Tyre worn close to legal limit/worn on edge
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13.7%
Nearside Front Tyre worn close to legal limit/worn on edge
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13.1%
Offside Front Tyre worn close to legal limit/worn on edge
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6.9%
Nearside Rear Child Seat fitted not allowing full inspection of adult belt ()
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6.2%
Nearside Rear Tyre tread depth below requirements of 1.6mm
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5.9%
Windscreen damaged but not adversely affecting driver's view
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4.7%
Offside Rear Tyre tread depth below requirements of 1.6mm
Data covers a 3-year window centred on 2021. Counts include advisories and failures.
Found a specific BMW 330?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.