The picture
Gs450h: middle-of-the-pack on first-time pass
Across 1,558 MOT tests, the Gs450h returns 79.0% first-time pass — roughly in line with the UK fleet average. The single most-logged Major fail is shock absorber damaged to the extent. Windscreen damage and a defective headlamp lens round out the top three. Average tested mileage sits at 111,486, 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 shock absorber damaged to the extent that it does not function or showing signs of severe leakage
59 occurrences · 3.8% of tests
- 02
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
49 occurrences · 3.1% of tests
- 03
Headlamp reflector or lens slightly defective
49 occurrences · 3.1% of tests
- 04
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
40 occurrences · 2.6% of tests
- 05
The aim of a headlamp is not within limits laid down in the requirements
34 occurrences · 2.2% of tests
- 06
Engine MIL illuminated indicating a malfunction
31 occurrences · 2.0% of tests
- 07
Tyre tread depth not in accordance with the requirements
30 occurrences · 1.9% of tests
- 08
A tyre cords visible or damaged
28 occurrences · 1.8% of tests
- 09
The aim of a headlamp is not within limits laid down in the requirements
27 occurrences · 1.7% of tests
- 10
A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED
26 occurrences · 1.7% 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
£20–£160
If every one of this Gs450h'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 →
Try the calculator
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.
Buying or keeping a Gs450h?
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 Gs450h 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.