Used car guide

2021 Renault Trucks Master 35 LWB: common problems and what to check

What gets flagged at MOT on 2021 Renault Trucks Master 35 LWBs, from 199 tests in 2025, plus known faults and what to look at before you buy one.

Small sample: only 199 of these were MOT tested in 2025, so treat the percentages as rough. The known faults below don't depend on it.

199MOT tests in 2025
75%pass first time (all 2021 cars: 87%)
24,600typical miles a year
25%had lights and electrics flagged

What gets flagged at MOT

The share of 2021 Renault Trucks Master 35 LWB MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Lights and electrics
    25% of testsRough price £10–£80

    At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.

  • Tyres
    17% of testsRough price £70–£150

    At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.

  • Brakes
    15% of testsRough price £150–£350

    At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.

  • Suspension
    8% of testsRough price £120–£400

    At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.

  • Wipers, windscreen and mirrors
    6% of testsRough price £15–£250

    At the viewing: Check for chips in the driver's view, and test the wipers and washers.

  • Driveshafts and joints
    5% of testsRough price £60–£350

    At the viewing: On full steering lock, drive slowly and listen for clicking from the front wheels.

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Other years

YearMOT testsMost flagged
2023154Lights and electrics 24%
2022153Lights and electrics 18%
2020107Lights and electrics 9%

Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 2021 Renault Trucks Master 35 LWBs registered in 2021. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score