The picture
Fiesta St-Line X Edition Turbo: above-average pass rates, with caveats
Across 2,111 MOT tests, the Fiesta St-Line X Edition Turbo returns 81.3% first-time pass — above the UK fleet average. The single most-logged Major fail is tyre tread under the limit. A seriously damaged tyre and headlamp aim out of spec round out the top three. Average tested mileage sits at 22,426, 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
73 occurrences · 3.5% of tests
- 02
A tyre seriously damaged
59 occurrences · 2.8% of tests
- 03
The aim of a headlamp is not within limits laid down in the requirements
31 occurrences · 1.5% of tests
- 04
A tyre seriously damaged
23 occurrences · 1.1% of tests
- 05
A tyre cords visible or damaged
20 occurrences · 0.9% of tests
- 06
a brake lining or pad worn below 1.5mm
18 occurrences · 0.9% of tests
- 07
A shock absorber damaged to the extent that it does not function or showing signs of severe leakage
18 occurrences · 0.9% of tests
- 08
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
16 occurrences · 0.8% of tests
- 09
Lamp not securely attached
10 occurrences · 0.5% of tests
- 10
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
8 occurrences · 0.4% 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
£130–£270
If every one of this Fiesta ST Line X Edition Turbo'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
Headlight restoration kit
Yellowed lenses fail the light-output test. A restoration kit lifts the haze in an afternoon for £20.
Search Amazon UK
Buying or keeping a Fiesta ST Line X Edition Turbo?
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 Fiesta ST Line X Edition Turbo 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.