MOT cost .
BMW R100
MOT 2023
Wikimedia

BMW

R100

621 MOT tests analysed. sits above the UK fleet average — here's where R100s pass, fail, and end up on the retest sheet.

That's 14.1 points above the UK fleet average across our 1,988 tracked models — a confident result.

Pass

89.9%

Pass-after-fix

3.9%

Fail

6.3%

Avg miles

40,613

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

The picture

R100: a strong MOT record by UK norms

Across 621 MOT tests, the R100 returns 89.9% first-time pass — comfortably ahead of the UK fleet average. The single most-logged Major fail is a stop-lamp out. Brake efficiency below minimum requirement and a non-conforming number plate round out the top three. Average tested mileage sits at 40,613, 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

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

    5 occurrences · 0.8% of tests

  2. 02

    Brake efficiency below minimum requirement

    4 occurrences · 0.6% of tests

  3. 03

    Number plate does not conform to the specified requirements

    4 occurrences · 0.6% of tests

  4. 04

    Significant brake effort recorded with no brake applied indicating a binding brake

    3 occurrences · 0.5% of tests

  5. 05

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

    3 occurrences · 0.5% of tests

  6. 06

    A shock absorber not functioning or leaking severely

    3 occurrences · 0.5% of tests

  7. 07

    A throttle control not functioning correctly

    3 occurrences · 0.5% of tests

  8. 08

    Audible warning not working

    3 occurrences · 0.5% of tests

  9. 09

    Brake pipe inadequately clipped or supported

    2 occurrences · 0.3% of tests

  10. 10

    Flexible brake hose slightly damaged, chafed or twisted

    2 occurrences · 0.3% 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

£33–£150

If every one of this R100'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 →

Try the calculator

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

MOT-spec replacement number plate

Faded or non-standard plates fail outright. Replacements take ten minutes online with V5C details.

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 R100?

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 R100 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.