The picture
Proceed Gt-Line Isg: a strong MOT record by UK norms
Across 862 MOT tests, the Proceed Gt-Line Isg returns 85.6% first-time pass — comfortably ahead of the UK fleet average. The single most-logged Major fail is tyre tread under the limit. Wipers that don't clear the screen and a defective wiper blade round out the top three. Average tested mileage sits at 29,137, 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
31 occurrences · 3.6% of tests
- 02
Wiper blade missing or obviously not clearing the windscreen
30 occurrences · 3.5% of tests
- 03
Wiper blade defective
18 occurrences · 2.1% of tests
- 04
a brake lining or pad worn below 1.5mm
16 occurrences · 1.9% of tests
- 05
A tyre cords visible or damaged
15 occurrences · 1.7% of tests
- 06
A tyre seriously damaged
12 occurrences · 1.4% of tests
- 07
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
9 occurrences · 1.0% of tests
- 08
Brake disc or drum significantly and obviously worn
7 occurrences · 0.8% of tests
- 09
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
7 occurrences · 0.8% of tests
- 10
Excessive fluctuation in brake effort through each wheel revolution.
4 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 5 failures
£240–£440
If every one of this Proceed GT Line Isg'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
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
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 Proceed GT Line Isg?
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 Proceed GT Line Isg 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.