Model report · 2005–2025
BRIXTON BX 125 X
125cc
Petrol
Class 1
75.2%
first-time pass rate
14.2%
failed outright
3,404
median miles at test
141
MOT tests, 2005–2025
What fails on a BX 125 X
failure defects by component group · advisories excluded
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| lamps and reflectors |
|
19 | 34.5 |
| brakes |
|
13 | 23.6 |
| structure and attachments |
|
13 | 23.6 |
| steering |
|
3 | 5.5 |
| suspension |
|
2 | 3.6 |
| audible warning (Horn) |
|
2 | 3.6 |
| wheels |
|
1 | 1.8 |
| tyres |
|
1 | 1.8 |
| Identification of the vehicle |
|
1 | 1.8 |
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 BX 125 X beats 4 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).
YAMAHA
YBR 125
71.0% pass · 125k tests
HONDA
CG125
72.2% pass · 89.3k tests
HONDA
CBF125
73.3% pass · 84.4k tests
GILERA
RUNNER
70.8% pass · 69.9k 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 BX 125 X.
Pass rate by registration year
how each model-year cohort fares · registration year from first use date
Best year to buy used: 2019 (81.3% pass). Weakest: 2019 (81.3%).
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.