The picture
500 C: middle-of-the-pack on first-time pass
Across 5,456 MOT tests, the 500 C returns 70.2% first-time pass — below the UK fleet average. The single most-logged Major fail is worn suspension bushes. A worn shock-absorber bush and shock absorber damaged to the extent round out the top three. Average tested mileage sits at 63,122, 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
A suspension pin, bush or joint excessively worn
311 occurrences · 5.7% of tests
- 02
A shock absorber bush excessively worn
230 occurrences · 4.2% of tests
- 03
A shock absorber damaged to the extent that it does not function or showing signs of severe leakage
216 occurrences · 4.0% of tests
- 04
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
120 occurrences · 2.2% of tests
- 05
Tyre tread depth not in accordance with the requirements
117 occurrences · 2.1% of tests
- 06
Lambda coefficient outside the default limits or the range specified by the manufacturer
117 occurrences · 2.1% of tests
- 07
A tyre cords visible or damaged
110 occurrences · 2.0% of tests
- 08
A suspension pin, bush or joint excessively worn
106 occurrences · 1.9% of tests
- 09
Parking brake efficiency below minimum requirement
104 occurrences · 1.9% of tests
- 10
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
101 occurrences · 1.9% 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 2 failures
£140–£335
If every one of this 500 C'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 500 C?
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 500 C 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.