ZONTES T310

312cc Petrol Class 2

89.0%

first-time pass rate

10.3%

failed outright

3,896

median miles at test

136

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2023–2025

The T310's first-time pass rate has held steady since 2023 (88.6% → 88.6%).

What fails on a T310

failure defects by component group · advisories excluded

Component group	Defects	% of defects
brakes	14	43.8
suspension	7	21.9
structure and attachments	4	12.5
lamps and reflectors	3	9.4
tyres	2	6.2
wheels	2	6.2

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 T310 beats 4 of its 4 closest rivals (SUZUKI AN400, SUZUKI DR-Z400S, YAMAHA RD350).

SUZUKI AN400 86.2% pass · 27.1k tests SUZUKI DR-Z400S 80.4% pass · 26.8k tests YAMAHA RD350 86.3% pass · 19.6k tests KAWASAKI ZXR400 73.1% pass · 14.2k 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 T310.

Pass rate by registration year

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

Best year to buy used: 2021 (89.1% pass). Weakest: 2021 (89.1%).

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.