Lexus
UX 300e
1,561 MOT tests analysed. sits above the UK fleet average — here's where UX 300es pass, fail, and end up on the retest sheet.
That's 16.7 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
94.2%
Pass-after-fix
1.8%
Fail
3.3%
Avg miles
20,840
Pass + Pass-after-fix + Fail = 100%
Electric and hydrogen vehicles are exempt from all UK clean air zone charges.
The picture
Ux 300e: a strong MOT record by UK norms
Across 1,561 MOT tests, the Ux 300e returns 94.2% first-time pass — comfortably ahead of the UK fleet average. The single most-logged Major fail is tyre tread under the limit. A defective wiper blade and windscreen damage round out the top three. Average tested mileage sits at 20,840, 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.
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- 01
Tyre tread depth not in accordance with the requirements
17 occurrences · 1.1% of tests
- 02
Wiper blade defective
15 occurrences · 1.0% of tests
- 03
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
14 occurrences · 0.9% of tests
- 04
A tyre seriously damaged
13 occurrences · 0.8% of tests
- 05
Wiper blade missing or obviously not clearing the windscreen
8 occurrences · 0.5% of tests
- 06
A tyre pressure monitoring system malfunctioning or obviously inoperative
4 occurrences · 0.3% of tests
- 07
Tyres on the same axle or on twin wheels are different sizes
3 occurrences · 0.2% of tests
- 08
A tyre cords visible or damaged
3 occurrences · 0.2% of tests
- 09
A direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
2 occurrences · 0.1% of tests
- 10
A battery insecure but not likely to fall from carrier
2 occurrences · 0.1% 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
£100–£185
If every one of this UX 300e'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.
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
Bosch Aerotwin wiper blades
Cheap wipers fail the test on smear streaks. Bosch Aerotwins last a winter and clear a screen properly.
Search Amazon UK
My Motor World · affiliate
Parts & supplies for this fix
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Motor World Lexus GS450H Saloon 2005- Car Floor Mat Set
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EV King · affiliate
EV charging & accessories
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EV Charging Cables
8M - 32amp (3 Phase)- Blaupunkt Type 2 Charging Cable 32amp - 3 Phase (22kW) 8M
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EV Charging Cables
15M - 32amp -Type 2 to Type 2 Charging Cable Type 2 to Type 2 15M 32amp (7.4kW)
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Book a mobile mechanic
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Buying or keeping an UX 300e?
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 an UX 300e 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.