Audi
6,357 MOT tests analysed. sits above the UK fleet average — here's where A3 S Line 40 Tfsi E S As pass, fail, and end up on the retest sheet.
That's 12.3 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
89.8%
Pass-after-fix
1.2%
Fail
8.5%
Avg miles
32,892
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 · 6,357 tests
Pass rate climbs 3.8 points across the cohorts — newer A3 S Line 40 Tfsi E S A examples clear the test more reliably than the early cars.
Pass
86.3%
Fail
9.6%
PRS
1.5%
Avg mileage at test
32,969 mi
Pass
90.0%
Fail
8.4%
PRS
1.2%
Avg mileage at test
32,888 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.
The picture
Across 6,357 MOT tests, the A3 S Line 40 Tfsi E S-A returns 89.8% 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 32,892, 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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A tyre seriously damaged
186 occurrences · 2.9% of tests
A tyre cords visible or damaged
163 occurrences · 2.6% of tests
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
150 occurrences · 2.4% of tests
Tyre tread depth not in accordance with the requirements
83 occurrences · 1.3% of tests
A tyre seriously damaged
46 occurrences · 0.7% of tests
Wiper blade defective
42 occurrences · 0.7% of tests
Wiper blade missing or obviously not clearing the windscreen
28 occurrences · 0.4% of tests
A tyre seriously damaged
26 occurrences · 0.4% of tests
A shock absorber damaged to the extent that it does not function or showing signs of severe leakage
16 occurrences · 0.3% of tests
A transmission shaft constant velocity joint boot severely deteriorated
12 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 A3 S Line 40 Tfsi E 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 3.8-point gap between bands means the year you buy Audi A3 S Line 40 Tfsi E S A has a real effect on what turns up at the garage.
Best band to buy
90.0%
2021+ registration
the 2021-on band climbs to 90.0% — a 3.8-point improvement. 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
86.3%
2018–2020 registration
On the 2018–2020 band, the data shows a 86.3% pass rate against a fleet average of 90.0% on the newer band. The main culprits logged at test: has a cut in excess of the…, has ply or cords exposed, and does not clear the windscreen effectively. Average mileage on test for this band is 32,969 miles — high-mileage wear items are a recurring theme.
Best band to buy: 2021+ (90.0% first-time pass). Worst band to avoid: 2018-2020 (86.3% pass). That's a 3.8-point spread across 335 older tests and 6,022 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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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
Sharp looks and classy interior, frugal engine line-up, impressive standard equipment levels.
Report of battery cut out on 2021 Audi A3 1.5 TSI. Dealer has suggested that the problem may be caused by driving over a hump or pothole in the road. Audi dealer says this is a "common problem which is being taken up with Audi as the switches are too sensitive". Compare new Audi A3 deals Buy new from £25,529(list price from £30,300) View offers
Source: honestjohn.co.uk · 1 reports indexed
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 an A3 S Line 40 Tfsi E 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.
