YAMAHA FS1

49cc Petrol Class 1

#3130 of 5426 overall #193 of 409 YAMAHAs #55 of 455 moped bikes

82.3%

first-time pass rate

10.5%

failed outright

14,988

median miles at test

2,677

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2025

The FS1's first-time pass rate has risen 22.8 points since 2005, 72.1% to 94.9%.

Pass rate by mileage

how the FS1's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage FS1 passes first time 85.8% of the time; by 40k that's 81.7%.

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 FS1

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	447	47.3	1.7×
steering and suspension	165	17.4	1.2×
brakes	110	11.6	0.7×
tyres and wheels	84	8.9	1.1×
lamps and reflectors	40	4.2	0.5×
drive system	28	3	1.1×
fuel and exhaust	25	2.6	1.2×
body and structure	18	1.9	1.1×
reg plates and vin	17	1.8	0.8×
steering	12	1.3	1.0×

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the FS1 beats 4 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 FS1.

Pass rate by registration year

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

Best year to buy used: 1974 (91.6% pass). Weakest: 1990 (70.4%).

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.

YAMAHA FS1 FAQ

answers computed from the data above · terms in the glossary

Is the YAMAHA FS1 reliable?

The YAMAHA FS1 is more reliable than average for its class: 82.3% of its 2,677 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #3130 of 5426 models.

What does a FS1 fail its MOT on most?

lighting and signalling — 47% of all defects recorded against failed FS1 tests.

What is the best year of FS1 to buy used?

By first-time pass rate, 1974-registered examples do best (91.6%) and 1990 worst (70.4%). Condition and history still trump the year.

How many miles will a FS1 last?

The median FS1 shows 14,988 miles at test, and examples around 40k miles still pass 81.7% of the time — mileage alone rarely kills one.