Audi
7,730 MOT tests analysed. sits above the UK fleet average — here's where Q5 S Line 40 Tdi Mhev Quat S As pass, fail, and end up on the retest sheet.
That's 14.9 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
92.4%
Pass-after-fix
1.5%
Fail
5.7%
Avg miles
30,897
Pass + Pass-after-fix + Fail = 100%
Diesel cars registered from September 2015 generally meet Euro 6 — compliant in London ULEZ, Birmingham CAZ, Bristol CAZ, and Glasgow LEZ.
Performance by cohort
2 year bands · 7,730 tests
Pass rate drops 2.7 points across the cohorts — recent Q5 S Line 40 Tdi Mhev Quat S A examples are doing worse than the early cars at the same tested age.
Pass
95.0%
Fail
4.0%
PRS
0.0%
Avg mileage at test
40,003 mi
Pass
92.3%
Fail
5.8%
PRS
1.6%
Avg mileage at test
30,533 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.
The picture
Across 7,730 MOT tests, the Q5 S Line 40 Tdi Mhev Quat S-A returns 92.4% 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 30,897, 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
137 occurrences · 1.8% of tests
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
94 occurrences · 1.2% of tests
A tyre seriously damaged
70 occurrences · 0.9% of tests
a brake lining or pad worn below 1.5mm
51 occurrences · 0.7% of tests
Engine MIL illuminated indicating a malfunction
45 occurrences · 0.6% of tests
Wiper blade defective
32 occurrences · 0.4% of tests
A tyre cords visible or damaged
25 occurrences · 0.3% of tests
Engine MIL illuminated indicating a malfunction
24 occurrences · 0.3% of tests
An SRS malfunction indicator lamp (MIL) indicates a system malfunction
22 occurrences · 0.3% of tests
Number plate does not conform to the specified requirements
16 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
£140–£255
If every one of this Q5 S Line 40 Tdi Mhev Quat 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 →
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Build your own retest budget.
Year-band analysis
First-time MOT pass rate split by registration band. A 2.7-point gap between bands is modest — the year you buy Audi Q5 S Line 40 Tdi Mhev Quat S A makes a small but real difference to MOT outcomes.
Best band to buy
95.0%
2018–2020 registration
the 2018–2020 band climbs to 95.0% — a 2.7-point improvement. Failures here are mostly wear items: damaged but not adversely affecting driver's view, defective or damaged by up to 50%… — the structural issues that drag down older examples don't appear in the top-10 for this band.
Band to be cautious about
92.3%
2021+ registration
On the 2021-on band, the data shows a 92.3% pass rate against a fleet average of 95.0% 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 has a cut in excess of the…. Average mileage on test for this band is 30,533 miles — high-mileage wear items are a recurring theme.
Best band to buy: 2018-2020 (95.0% first-time pass). Worst band to avoid: 2021+ (92.3% pass). That's a 2.7-point spread across 7,431 older tests and 299 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.
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
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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 40 Tdi Mhev Quat 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.
