The picture
320: middle-of-the-pack on first-time pass
Across 682 MOT tests, the 320 returns 72.9% first-time pass — below the UK fleet average. The single most-logged Major fail is windscreen damage. Worn suspension bushes and a broken or weak spring round out the top three. Average tested mileage sits at 122,887, which is the lens to read those failure rankings through. If you own one and the next test is close, the ranked list below is a sensible pre-test checklist.
Top ten reasons for rejection.
- 01
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
27 occurrences · 4.0% of tests
- 02
A suspension pin, bush or joint excessively worn
27 occurrences · 4.0% of tests
- 03
A spring or spring component fractured or seriously weakened
21 occurrences · 3.1% of tests
- 04
Brake pipe damaged or excessively corroded
15 occurrences · 2.2% of tests
- 05
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
15 occurrences · 2.2% of tests
- 06
A transmission shaft constant velocity joint boot severely deteriorated
14 occurrences · 2.1% of tests
- 07
Parking brake efficiency below minimum requirement
13 occurrences · 1.9% of tests
- 08
A suspension pin, bush or joint excessively worn
13 occurrences · 1.9% of tests
- 09
Tyre tread depth not in accordance with the requirements
12 occurrences · 1.8% of tests
- 10
The aim of a headlamp is not within limits laid down in the requirements
12 occurrences · 1.8% of tests
Counts cover Major and Dangerous defects logged at test. Advisory items excluded so this shows why a car was rejected, not just what the tester flagged in passing.
Worst-case fix budget · top 4 failures
£208–£605
If every one of this 320's most-logged Major fails hit at the same MOT, that's the real-world UK garage range. Reality is usually one or two items, not all of them. Open the estimator →
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Tools that pre-empt a retest.
Picked against this car's top failure patterns. Affiliate links to Amazon UK — we earn a small cut at no cost to you. Disclosed up-front, doesn't shape the data.
Buying or keeping a 320?
Use the failure ranking as a pre-test checklist or a haggling lever. Treat the headline pass rate as a fleet-wide trend, not a guarantee on any individual car.
If you own a 320 and your last MOT looked nothing like the ranked failures above, that's normal — individual cars vary widely. The ranking shows the patterns testers flag most often across the country.