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

AJS TN

124cc Petrol Class 1
#5367 of 5426 overall #43 of 45 AJSs #705 of 734 commuter bikes
52.5%
first-time pass rate
40.2%
failed outright
5,794
median miles at test
244
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2019–2022

The TN's first-time pass rate has fallen 20.8 points since 2019, 57.6% to 36.8%.

32%47%63%2019: 57.6% pass (33 tests)2020: 56.6% pass (53 tests)2021: 54.5% pass (44 tests)2022: 36.8% pass (38 tests)20192022

What fails on a TN

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lamps and reflectors
121 29.2
brakes
81 19.5
structure and attachments
70 16.9
suspension
63 15.2
steering
28 6.7
tyres
27 6.5
audible warning (Horn)
13 3.1
Identification of the vehicle
9 2.2
wheels
2 0.5
steering and suspension
1 0.2

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 TN beats 0 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).

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 TN.

Pass rate by registration year

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

Best year to buy used: 2016 (56.8% pass). Weakest: 2015 (49.2%).

48%53%58%2015: 49.2% pass (122 tests)2016: 56.8% pass (88 tests)20152016

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.