Model report · 2005–2025
DERBI TERRA 125 ADVENTURE
124cc
Petrol
Class 1
72.7%
first-time pass rate
16.8%
failed outright
6,779
median miles at test
476
MOT tests, 2005–2025
Pass rate over time
first-time pass rate by test year · 2013–2018
The TERRA 125 ADVENTURE's first-time pass rate has fallen 3.7 points since 2013, 76.7% to 73.0%.
What fails on a TERRA 125 ADVENTURE
failure defects by component group · advisories excluded
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| brakes |
|
43 | 23.1 |
| lighting and signalling |
|
43 | 23.1 |
| drive system |
|
26 | 14 |
| steering and suspension |
|
19 | 10.2 |
| lamps and reflectors |
|
16 | 8.6 |
| structure and attachments |
|
14 | 7.5 |
| tyres and wheels |
|
10 | 5.4 |
| suspension |
|
9 | 4.8 |
| reg plates and vin |
|
3 | 1.6 |
| driving controls |
|
3 | 1.6 |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.
Pass rate by registration year
how each model-year cohort fares · registration year from first use date
Best year to buy used: 2010 (77.0% pass). Weakest: 2008 (60.4%).
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.