Renault
2,348 MOT tests analysed. lands in the middle of the pack — here's where Master Ll35 Business Dcis pass, fail, and end up on the retest sheet.
That's 4.8 points below the UK fleet average across our 1,984 tracked models — buyers should expect more first-time fails than the typical UK car.
Pass
72.7%
Pass-after-fix
7.4%
Fail
19.3%
Avg miles
81,016
Pass + Pass-after-fix + Fail = 100%
Diesel cars registered from September 2015 generally meet Euro 6 — compliant in London ULEZ, Birmingham CAZ, Bristol CAZ, and Glasgow LEZ.
Performance by cohort
2 year bands · 2,348 tests
Pass rate is broadly flat across the cohorts — new and old Master Ll35 Business Dci examples track each other at the test bay.
Pass
72.4%
Fail
18.5%
PRS
8.7%
Avg mileage at test
96,836 mi
Pass
72.9%
Fail
19.6%
PRS
6.7%
Avg mileage at test
72,713 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.
The picture
Across 593 MOT tests, the Master Ll35 Business Dci returns 75.2% first-time pass — roughly in line with the UK fleet average. The single most-logged Major fail is windscreen damage. A lamp out and a lamp out round out the top three. Average tested mileage sits at 76,739, 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 →
28–38
out of 50
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Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
173 occurrences · 7.4% of tests
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
100 occurrences · 4.3% of tests
A lens defective which has no effect on emitted light
61 occurrences · 2.6% of tests
a brake lining or pad worn below 1.5mm
61 occurrences · 2.6% of tests
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
55 occurrences · 2.3% of tests
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
54 occurrences · 2.3% of tests
Engine MIL illuminated indicating a malfunction
49 occurrences · 2.1% of tests
Parking brake efficiency below minimum requirement
48 occurrences · 2.0% of tests
A registration plate lamp not securely attached
47 occurrences · 2.0% of tests
Wiper blade missing or obviously not clearing the windscreen
42 occurrences · 1.8% 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
£88–£195
If every one of this Master Ll35 Business Dci'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 Renault Master Ll35 Business Dci makes little measurable difference to MOT outcomes.
Best band to buy
72.9%
2021+ registration
the 2021-on band climbs to 72.9% — a 0.5-point improvement. Tests in this band average 72,713 miles — roughly 24K miles fewer on the clock than the older band. Failures here are mostly wear items: damaged but not adversely affecting driver's view, inoperative in the case of multiple lamps… — 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
72.4%
2018–2020 registration
On the 2018–2020 band, the data shows a 72.4% pass rate against a fleet average of 72.9% on the newer band. The main culprits logged at test: damaged but not adversely affecting driver's view, lens defective which has no effect on…, and inoperative in the case of multiple lamps…. Average mileage on test for this band is 96,836 miles — high-mileage wear items are a recurring theme.
Best band to buy: 2021+ (72.9% first-time pass). Worst band to avoid: 2018-2020 (72.4% pass). That's a 0.5-point spread across 805 older tests and 1,543 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
H7 / W21W bulb pack
A spare-bulb kit lives in the boot. Test morning is not the time to find your stop-lamp's gone.
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 Master Ll35 Business Dci 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.
