BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

AJS 350

350cc Petrol Class 2
#1369 of 5426 overall #13 of 45 AJSs #838 of 2787 other bikes
88.7%
first-time pass rate
4.1%
failed outright
12,350
median miles at test
486
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2012

The 350's first-time pass rate has fallen 4.8 points since 2006, 90.8% to 86.0%.

84%88%92%2006: 90.8% pass (65 tests)2007: 85.5% pass (55 tests)2008: 88.5% pass (52 tests)2009: 90.0% pass (50 tests)2010: 88.2% pass (51 tests)2011: 85.1% pass (47 tests)2012: 86.0% pass (50 tests)20062012

Pass rate by mileage

how the 350's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage 350 passes first time 90.7% of the time; by 30k that's 81.8%.

80%88%96%0k: 90.7% pass (193 tests)10k: 93.3% pass (60 tests)20k: 86.9% pass (84 tests)30k: 81.8% pass (33 tests)0k20k30k

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 350

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
11 31.4
steering and suspension
9 25.7
brakes
6 17.1
tyres and wheels
5 14.3
fuel and exhaust
2 5.7
drive system
1 2.9
reg plates and vin
1 2.9

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

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 350.