Renault Trucks
5,306 MOT tests analysed. lands in the middle of the pack — here's where Master 35 Lwbs pass, fail, and end up on the retest sheet.
That's 0.8 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
76.7%
Pass-after-fix
6.9%
Fail
15.7%
Avg miles
90,136
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 · 5,294 tests
Pass rate is broadly flat across the cohorts — new and old Master 35 Lwb examples track each other at the test bay.
Pass
76.9%
Fail
15.8%
PRS
6.9%
Avg mileage at test
110,764 mi
Pass
76.7%
Fail
15.5%
PRS
6.9%
Avg mileage at test
81,539 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.
The picture
Across 1,561 MOT tests, the Master 35 Lwb returns 79.6% first-time pass — roughly in line with the UK fleet average. The single most-logged Major fail is windscreen damage. A number-plate lamp out and headlamp aim out of spec round out the top three. Average tested mileage sits at 79,137, 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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Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
273 occurrences · 5.1% of tests
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
171 occurrences · 3.2% of tests
Parking brake efficiency below minimum requirement
95 occurrences · 1.8% of tests
a brake lining or pad worn below 1.5mm
88 occurrences · 1.7% of tests
The aim of a headlamp is not within limits laid down in the requirements
88 occurrences · 1.7% of tests
Engine MIL illuminated indicating a malfunction
79 occurrences · 1.5% of tests
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
75 occurrences · 1.4% of tests
Wiper blade missing or obviously not clearing the windscreen
67 occurrences · 1.3% of tests
A transmission shaft constant velocity joint boot severely deteriorated
64 occurrences · 1.2% of tests
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
63 occurrences · 1.2% 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
£98–£275
If every one of this Master 35 Lwb'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 Trucks Master 35 Lwb makes little measurable difference to MOT outcomes.
Best band to buy
76.9%
2018–2020 registration
the 2018–2020 band climbs to 76.9% — a 0.3-point improvement. 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.
Band to be cautious about
76.7%
2021+ registration
On the 2021-on band, the data shows a 76.7% pass rate against a fleet average of 76.9% on the newer band. The main culprits logged at test: damaged but not adversely affecting driver's view, inoperative in the case of multiple lamps…, and efficiency below requirements. Average mileage on test for this band is 81,539 miles — high-mileage wear items are a recurring theme.
Best band to buy: 2018-2020 (76.9% first-time pass). Worst band to avoid: 2021+ (76.7% pass). That's a 0.3-point spread across 3,777 older tests and 1,517 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
Item 03 · Amazon UK
Headlight restoration kit
Yellowed lenses fail the light-output test. A restoration kit lifts the haze in an afternoon for £20.
Search Amazon UK
My Motor World · affiliate
Affiliate links — small commission, no extra cost to you.
Click Mechanic · affiliate
Affiliate links — small commission, no extra cost to you.
Mobile mechanic · UK-wide
Book a mechanic at your door.
Fixed-price quotes upfront. No garage needed. Click Mechanic sends a vetted local mechanic to you — home, work, or roadside.
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 35 Lwb 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.
