MOT cost .

Mercedes Benz

Viano

7,306 MOT tests analysed. lands in the middle of the pack — here's where Vianos pass, fail, and end up on the retest sheet.

That's 4.9 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

70.8%

Pass-after-fix

5.8%

Fail

22.4%

Avg miles

147,196

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

The picture

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

Across 7,306 MOT tests, the Viano returns 70.8% first-time pass — below the UK fleet average. The single most-logged Major fail is windscreen damage. A number-plate lamp out and a weak handbrake round out the top three. Average tested mileage sits at 147,196, 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

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

    374 occurrences · 5.1% of tests

  2. 02

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

    257 occurrences · 3.5% of tests

  3. 03

    Parking brake efficiency below minimum requirement

    200 occurrences · 2.7% of tests

  4. 04

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

    200 occurrences · 2.7% of tests

  5. 05

    Headlamp reflector or lens slightly defective

    198 occurrences · 2.7% of tests

  6. 06

    Tyre tread depth not in accordance with the requirements

    183 occurrences · 2.5% of tests

  7. 07

    An SRS malfunction indicator lamp (MIL) indicates a system malfunction

    172 occurrences · 2.4% of tests

  8. 08

    A tyre cords visible or damaged

    162 occurrences · 2.2% of tests

  9. 09

    Brake pipe damaged or excessively corroded

    158 occurrences · 2.2% of tests

  10. 10

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

    155 occurrences · 2.1% 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

£18–£115

If every one of this Viano'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

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 Viano?

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 Viano 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.