SYM AD05W JET 4 50

49cc Petrol Class 1

#4638 of 5426 overall #68 of 78 SYMs #212 of 455 moped bikes

71.2%

first-time pass rate

21.7%

failed outright

10,168

median miles at test

819

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2014–2023

The AD05W JET 4 50's first-time pass rate has fallen 3.4 points since 2014, 69.1% to 65.7%.

Pass rate by mileage

how the AD05W JET 4 50's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage AD05W JET 4 50 passes first time 74.3% of the time; by 20k that's 72.6%.

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 AD05W JET 4 50

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	105	27.6	2.1×
lighting and signalling	60	15.8	1.4×
steering and suspension	53	13.9	1.8×
lamps and reflectors	48	12.6	2.3×
structure and attachments	29	7.6	4.1×
suspension	25	6.6	3.6×
tyres and wheels	21	5.5	1.1×
tyres	17	4.5	2.7×
steering	13	3.4	3.5×
fuel and exhaust	9	2.4	1.3×

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 AD05W JET 4 50 beats 3 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 AD05W JET 4 50.

Pass rate by registration year

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

Best year to buy used: 2012 (74.9% pass). Weakest: 2013 (64.2%).

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.

SYM AD05W JET 4 50 FAQ

answers computed from the data above · terms in the glossary

Is the SYM AD05W JET 4 50 reliable?

The SYM AD05W JET 4 50 is less reliable than average for its class: 71.2% of its 819 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4638 of 5426 models.

What does a AD05W JET 4 50 fail its MOT on most?

brakes — 28% of all defects recorded against failed AD05W JET 4 50 tests.

What is the best year of AD05W JET 4 50 to buy used?

By first-time pass rate, 2012-registered examples do best (74.9%) and 2013 worst (64.2%). Condition and history still trump the year.

How many miles will a AD05W JET 4 50 last?

The median AD05W JET 4 50 shows 10,168 miles at test, and examples around 20k miles still pass 72.6% of the time — mileage alone rarely kills one.