The picture
Astra Business Edition Nav T: a strong MOT record by UK norms
Across 547 MOT tests, the Astra Business Edition Nav T returns 86.5% first-time pass — comfortably ahead of the UK fleet average. The single most-logged Major fail is the engine warning light staying lit. Brake pads worn below 1.5 mm and a defective wiper blade round out the top three. Average tested mileage sits at 23,466, 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
Engine MIL illuminated indicating a malfunction
16 occurrences · 2.9% of tests
- 02
a brake lining or pad worn below 1.5mm
8 occurrences · 1.5% of tests
- 03
Wiper blade defective
6 occurrences · 1.1% of tests
- 04
A wheel with a loose or missing wheel nut, bolt or stud
6 occurrences · 1.1% of tests
- 05
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
5 occurrences · 0.9% of tests
- 06
Stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
5 occurrences · 0.9% of tests
- 07
A tyre seriously damaged
5 occurrences · 0.9% of tests
- 08
Brake lining or pad worn down to wear indicator
5 occurrences · 0.9% of tests
- 09
A tyre pressure monitoring system malfunctioning or obviously inoperative
5 occurrences · 0.9% of tests
- 10
A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc
3 occurrences · 0.5% 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
£100–£205
If every one of this Astra Business Edition Nav T'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
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
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
Buying or keeping a Astra Business Edition Nav T?
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 Astra Business Edition Nav T 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.