Audi
1,928 MOT tests analysed. sits above the UK fleet average — here's where E Tron S Line 50 Quattros pass, fail, and end up on the retest sheet.
That's 13.8 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
91.3%
Pass-after-fix
1.0%
Fail
6.6%
Avg miles
31,696
Pass + Pass-after-fix + Fail = 100%
Electric and hydrogen vehicles are exempt from all UK clean air zone charges.
Performance by cohort
2 year bands · 1,928 tests
Pass rate is broadly flat across the cohorts — new and old E Tron S Line 50 Quattro examples track each other at the test bay.
Pass
91.4%
Fail
5.8%
PRS
0.7%
Avg mileage at test
34,535 mi
Pass
91.3%
Fail
7.3%
PRS
1.2%
Avg mileage at test
29,650 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.
The picture
Across 1,928 MOT tests, the E-Tron S Line 50 Quattro returns 91.3% first-time pass — comfortably ahead of the UK fleet average. The single most-logged Major fail is a tyre with the cords showing. Windscreen damage and a seriously damaged tyre round out the top three. Average tested mileage sits at 31,696, 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 cords visible or damaged
43 occurrences · 2.2% of tests
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
37 occurrences · 1.9% of tests
A tyre seriously damaged
34 occurrences · 1.8% of tests
Tyre tread depth not in accordance with the requirements
33 occurrences · 1.7% of tests
Number plate does not conform to the specified requirements
22 occurrences · 1.1% of tests
Wiper blade defective
13 occurrences · 0.7% of tests
Wiper blade missing or obviously not clearing the windscreen
9 occurrences · 0.5% of tests
An SRS malfunction indicator lamp (MIL) indicates a system malfunction
8 occurrences · 0.4% of tests
A headlamp cleaning device inoperative in the case of LED or gas discharge systems (HID)
5 occurrences · 0.3% of tests
The aim of a headlamp is not within limits laid down in the requirements
5 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
£135–£225
If every one of this E Tron S Line 50 Quattro'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 E Tron S Line 50 Quattro makes little measurable difference to MOT outcomes.
Best band to buy
91.4%
2018–2020 registration
the 2018–2020 band climbs to 91.4% — a 0.1-point improvement. Failures here are mostly wear items: tread depth below requirements of 1.6mm, damaged but not adversely affecting driver's view — the structural issues that drag down older examples don't appear in the top-10 for this band.
Band to be cautious about
91.3%
2021+ registration
On the 2021-on band, the data shows a 91.3% pass rate against a fleet average of 91.4% on the newer band. The main culprits logged at test: has ply or cords exposed, damaged but not adversely affecting driver's view, and has a cut in excess of the…. Average mileage on test for this band is 29,650 miles — high-mileage wear items are a recurring theme.
Best band to buy: 2018-2020 (91.4% first-time pass). Worst band to avoid: 2021+ (91.3% pass). That's a 0.1-point spread across 1,112 older tests and 816 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
MOT-spec replacement number plate
Faded or non-standard plates fail outright. Replacements take ten minutes online with V5C details.
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 an E Tron S Line 50 Quattro 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.
