Renault
7,147 MOT tests analysed. lands in the middle of the pack — here's where Koleoss pass, fail, and end up on the retest sheet.
That's 1.5 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
79.0%
Pass-after-fix
3.2%
Fail
17.1%
Avg miles
72,014
Pass + Pass-after-fix + Fail = 100%
Some examples of this model are borderline — a small number of diesels were certified Euro 6 before September 2015. Check your registration on the government's ULEZ checker to be certain. Daily charges if driven in the zone: London £12.50 · Birmingham £8.00 · Bristol £9.00 .
Performance by cohort
2 year bands · 7,147 tests
Pass rate climbs 13.2 points across the cohorts — newer Koleos examples clear the test more reliably than the early cars.
Pass
74.5%
Fail
21.0%
PRS
3.7%
Avg mileage at test
86,299 mi
Pass
87.7%
Fail
9.4%
PRS
2.4%
Avg mileage at test
44,277 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.
The picture
Across 4,579 MOT tests, the Koleos returns 75.8% first-time pass — roughly in line with the UK fleet average. The single most-logged Major fail is brake pads worn below 1.5 mm. A worn steering ball joint and tyre tread under the limit round out the top three. Average tested mileage sits at 71,502, 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
Above average — worth comparing quotes before buying. 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 →
24–32
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A steering ball joint with excessive wear or free play
235 occurrences · 3.3% of tests
a brake lining or pad worn below 1.5mm
218 occurrences · 3.1% of tests
A suspension pin, bush or joint excessively worn
143 occurrences · 2.0% of tests
Tyre tread depth not in accordance with the requirements
143 occurrences · 2.0% of tests
A suspension pin, bush or joint excessively worn
139 occurrences · 1.9% of tests
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
134 occurrences · 1.9% of tests
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
129 occurrences · 1.8% of tests
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
114 occurrences · 1.6% of tests
Wiper blade defective
108 occurrences · 1.5% of tests
A suspension component excessively damaged or corroded
99 occurrences · 1.4% 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 5 failures
£380–£975
If every one of this Koleos'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 13.2-point gap between bands means the year you buy Renault Koleos has a real effect on what turns up at the garage.
Best band to buy
87.7%
2018–2020 registration
the 2018–2020 band climbs to 87.7% — a 13.2-point improvement. Tests in this band average 44,277 miles — roughly 42K miles fewer on the clock than the older band. Failures here are mostly wear items: less than 1.5 mm thick, blade defective — the structural issues that drag down older examples don't appear in the top-10 for this band. The stricter post-2018 MOT test rules meant manufacturers had to tighten up emissions and electrical checks, but this band still shows far fewer major failures on suspension and bodywork than the older fleet.
Band to be cautious about
74.5%
Pre-2018 registration
On the older band (pre-2018), the data shows a 74.5% pass rate against a fleet average of 87.7% on the newer band. The main culprits logged at test: ball joint has excessive play, less than 1.5 mm thick, and inoperative in the case of multiple lamps…. Average mileage on test for this band is 86,299 miles — high-mileage wear items are a recurring theme.
Best band to buy: 2018-2020 (87.7% first-time pass). Worst band to avoid: pre-2018 (74.5% pass). That's a 13.2-point spread across 4,727 older tests and 2,420 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
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
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
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Mobile mechanic · UK-wide
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Recall history
The Koleos has 1 official UK vehicle recall covering defect details, remedies, and affected build dates.
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 Koleos 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.
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