MOT cost .

Mercedes

Motorhome

655 MOT tests analysed. lands in the middle of the pack — here's where Motorhomes pass, fail, and end up on the retest sheet.

That's 1.4 points below the UK fleet average across our 1,988 tracked models — buyers should expect more first-time fails than the typical UK car.

Pass

74.3%

Pass-after-fix

4.0%

Fail

20.8%

Avg miles

86,578

Pass + Pass-after-fix + Fail = 100%

The picture

Motorhome: middle-of-the-pack on first-time pass

Across 655 MOT tests, the Motorhome returns 74.3% first-time pass — below the UK fleet average. The single most-logged Major fail is a weak handbrake. A number-plate lamp out and windscreen damage round out the top three. Average tested mileage sits at 86,578, 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.

Top ten reasons for rejection.

  1. 01

    Parking brake efficiency below minimum requirement

    26 occurrences · 4.0% of tests

  2. 02

    A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources

    26 occurrences · 4.0% of tests

  3. 03

    Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view

    25 occurrences · 3.8% of tests

  4. 04

    Wiper blade missing or obviously not clearing the windscreen

    21 occurrences · 3.2% of tests

  5. 05

    The aim of a headlamp is not within limits laid down in the requirements

    20 occurrences · 3.1% of tests

  6. 06

    A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning

    17 occurrences · 2.6% of tests

  7. 07

    A suspension pin, bush or joint excessively worn

    16 occurrences · 2.4% of tests

  8. 08

    Service brake efficiency below minimum requirement

    14 occurrences · 2.1% of tests

  9. 09

    An obligatory rear fog lamp missing, or a front or rear fog lamp inoperative or in the case of a multiple light source more than 1/2 not functioning

    13 occurrences · 2.0% of tests

  10. 10

    Brake pipe damaged or excessively corroded

    10 occurrences · 1.5% 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

£38–£160

If every one of this Motorhome'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.

Tools that pre-empt a retest.

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

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 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

Buying or keeping a Motorhome?

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 Motorhome 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.