Photo: PekePON, CC BY-SA 3.0
Suzuki
1,737 MOT tests analysed. sits above the UK fleet average — here's where Vitara Sz4 Boosterjet Mhevs pass, fail, and end up on the retest sheet.
That's 13.4 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
90.9%
Pass-after-fix
3.0%
Fail
6.0%
Avg miles
25,470
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 · 1,737 tests
Pass rate is broadly flat across the cohorts — new and old Vitara Sz4 Boosterjet Mhev examples track each other at the test bay.
Pass
91.1%
Fail
6.7%
PRS
2.0%
Avg mileage at test
30,710 mi
Pass
90.8%
Fail
5.8%
PRS
3.3%
Avg mileage at test
23,636 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.
The picture
Across 1,737 MOT tests, the Vitara Sz4 Boosterjet Mhev returns 90.9% first-time pass — comfortably ahead of the UK fleet average. The single most-logged Major fail is wipers that don't clear the screen. Tyre tread under the limit and a defective wiper blade round out the top three. Average tested mileage sits at 25,470, 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 missing or obviously not clearing the windscreen
37 occurrences · 2.1% of tests
Tyre tread depth not in accordance with the requirements
26 occurrences · 1.5% of tests
Wiper blade defective
26 occurrences · 1.5% of tests
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
16 occurrences · 0.9% of tests
A tyre seriously damaged
16 occurrences · 0.9% of tests
a brake lining or pad worn below 1.5mm
8 occurrences · 0.5% of tests
Brake disc or drum significantly and obviously worn
5 occurrences · 0.3% of tests
A tyre cords visible or damaged
5 occurrences · 0.3% of tests
Lamp not securely attached
4 occurrences · 0.2% of tests
Bumper insecure or with damage likely to cause injury when grazed or contacted
4 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 3 failures
£100–£185
If every one of this Vitara Sz4 Boosterjet 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. Pass rates barely move across bands here, so the year you buy Suzuki Vitara Sz4 Boosterjet Mhev makes little measurable difference to MOT outcomes.
Best band to buy
91.1%
2018–2020 registration
the 2018–2020 band climbs to 91.1% — a 0.3-point improvement. Failures here are mostly wear items: tread depth below requirements of 1.6mm, does not clear the windscreen effectively — the structural issues that drag down older examples don't appear in the top-10 for this band.
Band to be cautious about
90.8%
2021+ registration
On the 2021-on band, the data shows a 90.8% pass rate against a fleet average of 91.1% on the newer band. The main culprits logged at test: does not clear the windscreen effectively, blade defective, and damaged but not adversely affecting driver's view. Average mileage on test for this band is 23,636 miles — high-mileage wear items are a recurring theme.
Best band to buy: 2018-2020 (91.1% first-time pass). Worst band to avoid: 2021+ (90.8% pass). That's a 0.3-point spread across 1,286 older tests and 451 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
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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.
Where it falls short
Owner reports (14 entries) flag recurring problems with tyre wear, timing chain/belt, brake discs.
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 Vitara Sz4 Boosterjet 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.