The picture
Q3 S Line 40 Tfsi Quattro S-A: a strong MOT record by UK norms
Across 1,675 MOT tests, the Q3 S Line 40 Tfsi Quattro S-A returns 92.7% first-time pass — comfortably ahead of the UK fleet average. The single most-logged Major fail is a seriously damaged tyre. A tyre with the cords showing and windscreen damage round out the top three. Average tested mileage sits at 23,428, 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 tyre seriously damaged
32 occurrences · 1.9% of tests
- 02
A tyre cords visible or damaged
26 occurrences · 1.6% of tests
- 03
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
22 occurrences · 1.3% of tests
- 04
Tyre tread depth not in accordance with the requirements
21 occurrences · 1.3% of tests
- 05
a brake lining or pad worn below 1.5mm
14 occurrences · 0.8% of tests
- 06
Brake lining or pad worn down to wear indicator
6 occurrences · 0.4% of tests
- 07
Wiper blade defective
4 occurrences · 0.2% of tests
- 08
A tyre not fitted in compliance with the manufacturers sidewall instruction
4 occurrences · 0.2% of tests
- 09
A tyre seriously damaged
4 occurrences · 0.2% of tests
- 10
A tyre seriously damaged
4 occurrences · 0.2% 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
£200–£350
If every one of this Q3 S Line 40 Tfsi Quattro S A'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.
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
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 Q3 S Line 40 Tfsi Quattro S A?
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 Q3 S Line 40 Tfsi Quattro S A 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.