BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ GAS GAS/EC 300 21
Model report · 2005–2025

GAS GAS EC 300 21

293cc Petrol Class 2
84.2%
first-time pass rate
3.2%
failed outright
1,590
median miles at test
95
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2024–2025

The EC 300 21's first-time pass rate has risen 9.5 points since 2024, 81.8% to 91.3%.

79%87%94%2024: 81.8% pass (44 tests)2025: 91.3% pass (46 tests)20242025

What fails on a EC 300 21

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
Identification of the vehicle
2 40
lamps and reflectors
2 40
suspension
1 20

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 EC 300 21 beats 3 of its 4 closest rivals (YAMAHA RD350, YAMAHA YP250, YAMAHA WR250F).

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 EC 300 21.

Pass rate by registration year

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

Best year to buy used: 2021 (85.3% pass). Weakest: 2021 (85.3%).

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.