BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

BMW R50

500cc Petrol Class 2
#343 of 5426 overall #22 of 109 BMWs #211 of 2787 other bikes
92.7%
first-time pass rate
2.7%
failed outright
39,519
median miles at test
479
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2017

The R50's first-time pass rate has risen 1.6 points since 2006, 95.3% to 96.9%.

80%90%100%2006: 95.3% pass (43 tests)2007: 92.7% pass (41 tests)2008: 100.0% pass (37 tests)2009: 93.0% pass (43 tests)2010: 89.1% pass (46 tests)2011: 89.4% pass (47 tests)2012: 90.7% pass (43 tests)2013: 93.5% pass (31 tests)2014: 91.2% pass (34 tests)2015: 93.9% pass (33 tests)2016: 83.9% pass (31 tests)2017: 96.9% pass (32 tests)20062017

Pass rate by mileage

how the R50's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage R50 passes first time 90.3% of the time; by 50k that's 91.5%.

89%94%99%0k: 90.3% pass (72 tests)10k: 93.9% pass (49 tests)20k: 97.6% pass (41 tests)30k: 92.5% pass (80 tests)40k: 91.1% pass (90 tests)50k: 91.5% pass (47 tests)0k30k50k

First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.

What fails on a R50

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
10 43.5
steering and suspension
4 17.4
brakes
4 17.4
body and structure
2 8.7
fuel and exhaust
1 4.3
driving controls
1 4.3
tyres and wheels
1 4.3

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the R50 beats 4 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).

Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the R50.

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 1960 (93.6% pass). Weakest: 1960 (93.6%).

First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.