YAMAHA JOG

49cc Petrol Class 1

#4715 of 5426 overall #361 of 409 YAMAHAs #238 of 455 moped bikes

70.2%

first-time pass rate

22.5%

failed outright

5,636

median miles at test

1,387

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2017

The JOG's first-time pass rate has fallen 4.6 points since 2005, 69.7% to 65.1%.

Pass rate by mileage

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

A low-mileage JOG passes first time 72.3% of the time; by 20k that's 67.6%.

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 JOG

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	324	38.5	3.1×
brakes	163	19.4	2.0×
steering and suspension	145	17.2	2.7×
tyres and wheels	69	8.2	2.0×
fuel and exhaust	64	7.6	5.9×
body and structure	31	3.7	3.8×
lamps and reflectors	21	2.5	0.6×
structure and attachments	11	1.3	0.9×
reg plates and vin	7	0.8	0.8×
Items Not Tested	7	0.8	5.5×

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 JOG 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 JOG.

Pass rate by registration year

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

Best year to buy used: 1990 (79.8% pass). Weakest: 2005 (62.6%).

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.

YAMAHA JOG FAQ

answers computed from the data above · terms in the glossary

Is the YAMAHA JOG reliable?

The YAMAHA JOG is less reliable than average for its class: 70.2% of its 1,387 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4715 of 5426 models.

What does a JOG fail its MOT on most?

lighting and signalling — 38% of all defects recorded against failed JOG tests.

What is the best year of JOG to buy used?

By first-time pass rate, 1990-registered examples do best (79.8%) and 2005 worst (62.6%). Condition and history still trump the year.

How many miles will a JOG last?

The median JOG shows 5,636 miles at test, and examples around 20k miles still pass 67.6% of the time — mileage alone rarely kills one.