Audi
4,272 MOT tests analysed. sits above the UK fleet average — here's where Q5 S Line 45 Tfsi Mhev Quat SAs pass, fail, and end up on the retest sheet.
That's 15.6 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
93.1%
Pass-after-fix
1.3%
Fail
5.0%
Avg miles
26,831
Pass + Pass-after-fix + Fail = 100%
Petrol cars first registered from January 2006 meet Euro 4 — compliant in London ULEZ, Birmingham CAZ, Bristol CAZ, and Glasgow LEZ.
Performance by cohort
2 year bands · 4,272 tests
Pass rate climbs 2.6 points across the cohorts — newer Q5 S Line 45 Tfsi Mhev Quat SA examples clear the test more reliably than the early cars.
Pass
90.7%
Fail
7.0%
PRS
0.9%
Avg mileage at test
29,856 mi
Pass
93.3%
Fail
4.8%
PRS
1.3%
Avg mileage at test
26,568 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.
The picture
Across 4,272 MOT tests, the Q5 S Line 45 Tfsi Mhev Quat Sa returns 93.1% first-time pass — comfortably ahead of the UK fleet average. The single most-logged Major fail is tyre tread under the limit. Windscreen damage and a seriously damaged tyre round out the top three. Average tested mileage sits at 26,831, 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.
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Tyre tread depth not in accordance with the requirements
86 occurrences · 2.0% of tests
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
57 occurrences · 1.3% of tests
A tyre seriously damaged
49 occurrences · 1.1% of tests
A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc
18 occurrences · 0.4% of tests
A tyre cords visible or damaged
17 occurrences · 0.4% of tests
Wiper blade defective
16 occurrences · 0.4% of tests
Number plate does not conform to the specified requirements
16 occurrences · 0.4% of tests
a brake lining or pad worn below 1.5mm
12 occurrences · 0.3% of tests
Reflector defective or damaged by up to 50% of the reflecting surface
8 occurrences · 0.2% of tests
A transmission shaft constant velocity joint boot severely deteriorated
8 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 2 failures
£120–£190
If every one of this Q5 S Line 45 Tfsi Mhev Quat SA'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.
Year-band analysis
First-time MOT pass rate split by registration band. A 2.6-point gap between bands is modest — the year you buy Audi Q5 S Line 45 Tfsi Mhev Quat SA makes a small but real difference to MOT outcomes.
Best band to buy
93.3%
2021+ registration
the 2021-on band climbs to 93.3% — a 2.6-point improvement. Failures here are mostly wear items: tread depth below requirements of 1.6mm, has a cut in excess of the… — the structural issues that drag down older examples don't appear in the top-10 for this band. Post-2020 examples are early in their MOT life and generally show the cleanest records.
Band to be cautious about
90.7%
2018–2020 registration
On the 2018–2020 band, the data shows a 90.7% pass rate against a fleet average of 93.3% on the newer band. The main culprits logged at test: tread depth below requirements of 1.6mm, damaged but not adversely affecting driver's view, and less than 1.5 mm thick. Average mileage on test for this band is 29,856 miles — high-mileage wear items are a recurring theme.
Best band to buy: 2021+ (93.3% first-time pass). Worst band to avoid: 2018-2020 (90.7% pass). That's a 2.6-point spread across 345 older tests and 3,927 newer ones — year of build makes a material difference on this model.
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.
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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 Q5 S Line 45 Tfsi Mhev Quat SA 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.
