MASH FIFTY 50

49cc Petrol Class 1

65.6%

first-time pass rate

23.7%

failed outright

4,261

median miles at test

131

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2023–2025

The FIFTY 50's first-time pass rate has fallen 26.3 points since 2023, 81.6% to 55.3%.

What fails on a FIFTY 50

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lamps and reflectors	42	53.8
structure and attachments	14	17.9
suspension	9	11.5
brakes	7	9
audible warning (Horn)	4	5.1
steering	1	1.3
wheels	1	1.3

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 FIFTY 50 beats 2 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).

PEUGEOT SPEEDFIGHT 65.2% pass · 83.7k tests PIAGGIO ZIP 71.3% pass · 79.0k tests PIAGGIO NRG 65.5% pass · 40.5k tests PEUGEOT VIVACITY 70.4% pass · 29.7k tests

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 FIFTY 50.

Pass rate by registration year

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

Best year to buy used: 2019 (65.2% pass). Weakest: 2019 (65.2%).

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.