The picture
Grand C4 Picasso: a below-average pass rate worth digging into
Across 7,256 MOT tests, the Grand C4 Picasso returns 62.0% first-time pass — well below the UK fleet average. The single most-logged Major fail is a number-plate lamp out. A lamp out and a missing CV-joint boot round out the top three. Average tested mileage sits at 102,392, 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 rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
784 occurrences · 10.8% of tests
- 02
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
547 occurrences · 7.5% of tests
- 03
A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc
437 occurrences · 6.0% of tests
- 04
Stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
395 occurrences · 5.4% of tests
- 05
Tyre tread depth not in accordance with the requirements
379 occurrences · 5.2% of tests
- 06
A spring or spring component fractured or seriously weakened
345 occurrences · 4.8% of tests
- 07
A suspension pin, bush or joint excessively worn
261 occurrences · 3.6% of tests
- 08
A transmission shaft constant velocity joint boot severely deteriorated
259 occurrences · 3.6% of tests
- 09
A rear registration plate lamp or light source missing or inoperative in the case of a single lamp or all lamps
254 occurrences · 3.5% of tests
- 10
a brake lining or pad worn below 1.5mm
226 occurrences · 3.1% 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 3 failures
£76–£165
If every one of this Grand C4 Picasso'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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Build your own retest budget.
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.
Item 01 · Amazon UK
H7 / W21W bulb pack
A spare-bulb kit lives in the boot. Test morning is not the time to find your stop-lamp's gone.
Search Amazon UK
Item 02 · Amazon UK
Digital tyre-tread depth gauge
Five quid for a gauge beats £150 for a retest. UK MOT minimum is 1.6mm — most testers fail anything below 2mm to be safe.
Search Amazon UK
Buying or keeping a Grand C4 Picasso?
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 Grand C4 Picasso 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.