Porsche
6,356 MOT tests analysed. sits above the UK fleet average — here's where Taycan 4S 93kwhs pass, fail, and end up on the retest sheet.
That's 16.7 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
94.2%
Pass-after-fix
0.3%
Fail
4.6%
Avg miles
27,698
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 · 6,356 tests
Pass rate is broadly flat across the cohorts — new and old Taycan 4S 93kwh examples track each other at the test bay.
Pass
94.5%
Fail
4.2%
PRS
0.2%
Avg mileage at test
29,876 mi
Pass
93.8%
Fail
5.1%
PRS
0.3%
Avg mileage at test
24,791 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.
The picture
Across 1,401 MOT tests, the Taycan 4s 93kwh returns 87.8% first-time pass — comfortably ahead of the UK fleet average. The single most-logged Major fail is a tyre with the cords showing. A seriously damaged tyre and windscreen damage round out the top three. Average tested mileage sits at 23,821, 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.
ABI Insurance Group
A high-group car — insurance costs will be significantly above average. Lower groups cost less to insure; UK fleet average is around Group 22.
Source: ABI Group Rating Panel · administered by Thatcham Research · groups cover standard variants; performance trims may sit higher. Browse all insurance groups →
42–50
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A tyre cords visible or damaged
120 occurrences · 1.9% of tests
A tyre seriously damaged
89 occurrences · 1.4% of tests
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
78 occurrences · 1.2% of tests
A tyre seriously damaged
37 occurrences · 0.6% of tests
Tyre tread depth not in accordance with the requirements
29 occurrences · 0.5% of tests
Number plate does not conform to the specified requirements
23 occurrences · 0.4% of tests
A tyre seriously damaged
9 occurrences · 0.1% of tests
A tyre has a lump, bulge or tear caused by separation or partial failure of its structure. This includes any lifting of the tread rubber
7 occurrences · 0.1% of tests
A direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
6 occurrences · 0.1% of tests
Wiper blade defective
5 occurrences · 0.1% 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 Taycan 4S 93kwh'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 Porsche Taycan 4S 93kwh makes little measurable difference to MOT outcomes.
Best band to buy
94.5%
2018–2020 registration
the 2018–2020 band climbs to 94.5% — a 0.7-point improvement. Failures here are mostly wear items: has ply or cords exposed, 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.
Band to be cautious about
93.8%
2021+ registration
On the 2021-on band, the data shows a 93.8% pass rate against a fleet average of 94.5% on the newer band. The main culprits logged at test: has ply or cords exposed, has a cut in excess of the…, and damaged but not adversely affecting driver's view. Average mileage on test for this band is 24,791 miles — high-mileage wear items are a recurring theme.
Best band to buy: 2018-2020 (94.5% first-time pass). Worst band to avoid: 2021+ (93.8% pass). That's a 0.7-point spread across 2,717 older tests and 3,639 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 Taycan 4S 93kwh 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.
