SYM JET 4 50 E4

49cc Petrol Class 1

#4065 of 5426 overall #31 of 78 SYMs #106 of 455 moped bikes

77.0%

first-time pass rate

14.5%

failed outright

6,200

median miles at test

422

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2021–2025

The JET 4 50 E4's first-time pass rate has risen 12.7 points since 2021, 67.9% to 80.6%.

What fails on a JET 4 50 E4

failure defects by component group · advisories excluded

Component group	Defects	% of defects
brakes	43	32.6
lamps and reflectors	37	28
structure and attachments	19	14.4
suspension	12	9.1
tyres	9	6.8
steering	8	6.1
audible warning (Horn)	3	2.3
Identification of the vehicle	1	0.8

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 JET 4 50 E4 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 JET 4 50 E4.

Pass rate by registration year

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

Best year to buy used: 2020 (82.4% pass). Weakest: 2019 (70.5%).

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.