The picture
Prius Plus: above-average pass rates, with caveats
Across 3,637 MOT tests, the Prius Plus returns 82.6% first-time pass — above the UK fleet average. The single most-logged Major fail is tyre tread under the limit. A number-plate lamp out and brake pads worn below 1.5 mm round out the top three. Average tested mileage sits at 120,403, 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
Tyre tread depth not in accordance with the requirements
57 occurrences · 1.6% of tests
- 02
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
49 occurrences · 1.3% of tests
- 03
a brake lining or pad worn below 1.5mm
48 occurrences · 1.3% of tests
- 04
Wiper blade defective
45 occurrences · 1.2% of tests
- 05
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
25 occurrences · 0.7% of tests
- 06
A suspension joint dust cover severely deteriorated
23 occurrences · 0.6% of tests
- 07
A suspension joint dust cover severely deteriorated
23 occurrences · 0.6% of tests
- 08
A suspension joint dust cover missing or no longer prevents the ingress of dirt etc
23 occurrences · 0.6% of tests
- 09
A shock absorber damaged to the extent that it does not function or showing signs of severe leakage
23 occurrences · 0.6% of tests
- 10
A rear registration plate lamp or light source missing or inoperative in the case of a single lamp or all lamps
22 occurrences · 0.6% 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
£168–£335
If every one of this Prius Plus'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
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
Item 02 · 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 03 · Amazon UK
Brake pad measurement gauge
Testers fail pads under 1.5mm. A wear gauge tells you if you've got two months left or two weeks.
Search Amazon UK
Buying or keeping a Prius Plus?
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 Prius Plus 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.