Audi
1,362 MOT tests analysed. sits above the UK fleet average — here's where Q7 S Line 45 Tdi Mhev Quat As pass, fail, and end up on the retest sheet.
That's 13.3 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
90.8%
Pass-after-fix
1.2%
Fail
7.3%
Avg miles
36,145
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 · 1,362 tests
Pass rate is broadly flat across the cohorts — new and old Q7 S Line 45 Tdi Mhev Quat A examples track each other at the test bay.
Pass
90.6%
Fail
6.9%
PRS
1.6%
Avg mileage at test
39,040 mi
Pass
91.1%
Fail
7.8%
PRS
0.7%
Avg mileage at test
32,406 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.
The picture
Across 1,362 MOT tests, the Q7 S Line 45 Tdi Mhev Quat A returns 90.8% first-time pass — comfortably ahead of the UK fleet average. The single most-logged Major fail is windscreen damage. A seriously damaged tyre and a defective wiper blade round out the top three. Average tested mileage sits at 36,145, 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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Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
33 occurrences · 2.4% of tests
A tyre seriously damaged
32 occurrences · 2.3% of tests
Wiper blade defective
19 occurrences · 1.4% of tests
A tyre cords visible or damaged
16 occurrences · 1.2% of tests
Tyre tread depth not in accordance with the requirements
15 occurrences · 1.1% of tests
Reflector defective or damaged by up to 50% of the reflecting surface
9 occurrences · 0.7% of tests
Engine MIL illuminated indicating a malfunction
7 occurrences · 0.5% of tests
A suspension joint dust cover severely deteriorated
4 occurrences · 0.3% of tests
A tyre cords visible or damaged
4 occurrences · 0.3% of tests
Engine MIL illuminated indicating a malfunction
4 occurrences · 0.3% 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
£140–£235
If every one of this Q7 S Line 45 Tdi Mhev Quat 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. Pass rates barely move across bands here, so the year you buy Audi Q7 S Line 45 Tdi Mhev Quat A makes little measurable difference to MOT outcomes.
Best band to buy
91.1%
2021+ registration
the 2021-on band climbs to 91.1% — a 0.4-point improvement. Tests in this band average 32,406 miles — roughly 7K miles fewer on the clock than the older band. Failures here are mostly wear items: has a cut in excess of the…, has ply or cords exposed — 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
90.6%
2018–2020 registration
On the 2018–2020 band, the data shows a 90.6% pass rate against a fleet average of 91.1% on the newer band. The main culprits logged at test: damaged but not adversely affecting driver's view, has a cut in excess of the…, and blade defective. Average mileage on test for this band is 39,040 miles — high-mileage wear items are a recurring theme.
Best band to buy: 2021+ (91.1% first-time pass). Worst band to avoid: 2018-2020 (90.6% pass). That's a 0.4-point spread across 769 older tests and 593 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
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 02 · 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
My Motor World · affiliate
Affiliate links — small commission, no extra cost to you.
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Summit ADRG-215 Audi Replacement Stick-On Tinted Mirror Glass RHS
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Click Mechanic · affiliate
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Mobile mechanic · UK-wide
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Owner reports · Honest John
Verbatim faults logged by owners on honestjohn.co.uk over recent years. We didn't summarise — these are the words people typed in.
What's good
In the UK, the new Audi Q7 will initially be powered by a 272 PS V6 TDI engine. This complies with the Euro 6 emissions standard and its CO2 emissions have been reduced by as much as 50 grams per km.
Where it falls short
The new Audi Q7 comes standard with 19-inch wheels. Audi and quattro GmbH offer a large number of additional wheels in sizes up to 21 inches as options. Large, vented brake discs bring the SUV safely to a stop. They are gripped up front by aluminium six-piston calipers. The electromechanical parking brake, updated with convenient hill hold and startup functions, acts on the rear wheels.
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 Q7 S Line 45 Tdi Mhev Quat 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.
