Photo: PekePON, CC BY-SA 3.0
Suzuki
6,441 MOT tests analysed. sits above the UK fleet average — here's where Swift SZ L Dualjet Mhevs pass, fail, and end up on the retest sheet.
That's 15.5 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
93.0%
Pass-after-fix
2.6%
Fail
4.1%
Avg miles
21,267
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 · 6,441 tests
Pass rate climbs 1.7 points across the cohorts — newer Swift SZ L Dualjet Mhev examples clear the test more reliably than the early cars.
Pass
91.4%
Fail
6.1%
PRS
1.8%
Avg mileage at test
26,823 mi
Pass
93.1%
Fail
4.0%
PRS
2.6%
Avg mileage at test
21,018 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.
The picture
Across 6,441 MOT tests, the Swift Sz-L Dualjet Mhev returns 93.0% first-time pass — comfortably ahead of the UK fleet average. The single most-logged Major fail is a defective wiper blade. Wipers that don't clear the screen and windscreen damage round out the top three. Average tested mileage sits at 21,267, 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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Wiper blade defective
112 occurrences · 1.7% of tests
Wiper blade missing or obviously not clearing the windscreen
78 occurrences · 1.2% of tests
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
60 occurrences · 0.9% of tests
A tyre seriously damaged
48 occurrences · 0.7% of tests
a brake lining or pad worn below 1.5mm
32 occurrences · 0.5% of tests
Tyre tread depth not in accordance with the requirements
14 occurrences · 0.2% of tests
A tyre seriously damaged
7 occurrences · 0.1% of tests
A tyre seriously damaged
6 occurrences · 0.1% of tests
Reflector defective or damaged by up to 50% of the reflecting surface
4 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
4 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 3 failures
£120–£250
If every one of this Swift SZ L Dualjet Mhev'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 1.7-point gap between bands is modest — the year you buy Suzuki Swift SZ L Dualjet Mhev makes a small but real difference to MOT outcomes.
Best band to buy
93.1%
2021+ registration
the 2021-on band climbs to 93.1% — a 1.7-point improvement. Tests in this band average 21,018 miles — roughly 6K miles fewer on the clock than the older band. Failures here are mostly wear items: blade defective, does not clear the windscreen effectively — 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
91.4%
2018–2020 registration
On the 2018–2020 band, the data shows a 91.4% pass rate against a fleet average of 93.1% on the newer band. The main culprits logged at test: blade defective, does not clear the windscreen effectively, and has a cut in excess of the…. Average mileage on test for this band is 26,823 miles — high-mileage wear items are a recurring theme.
Best band to buy: 2021+ (93.1% first-time pass). Worst band to avoid: 2018-2020 (91.4% pass). That's a 1.7-point spread across 278 older tests and 6,163 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
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 Swift SZ L Dualjet Mhev 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.