Pass rate over time
The BOOSTER's first-time pass rate has fallen 7.5 points since 2005, 71.4% to 63.9%.
What fails on a BOOSTER
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| steering and suspension |
|
227 | 36 | 5.1× |
| lighting and signalling |
|
196 | 31.1 | 3.6× |
| brakes |
|
68 | 10.8 | 1.3× |
| tyres and wheels |
|
42 | 6.7 | 1.9× |
| fuel and exhaust |
|
38 | 6 | 5.0× |
| reg plates and vin |
|
22 | 3.5 | 3.9× |
| lamps and reflectors |
|
12 | 1.9 | 0.4× |
| body and structure |
|
12 | 1.9 | 2.6× |
| steering |
|
7 | 1.1 | 1.4× |
| Items Not Tested |
|
7 | 1.1 | 4.9× |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.
How rivals compare
On first-time pass rate the BOOSTER beats 2 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).
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 BOOSTER.
Pass rate by registration year
Best year to buy used: 2003 (71.9% pass). Weakest: 2000 (58.8%).
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.
MBK BOOSTER FAQ
Is the MBK BOOSTER reliable?
The MBK BOOSTER is less reliable than average for its class: 66.5% of its 890 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4938 of 5426 models.
What does a BOOSTER fail its MOT on most?
steering and suspension — 36% of all defects recorded against failed BOOSTER tests.
What is the best year of BOOSTER to buy used?
By first-time pass rate, 2003-registered examples do best (71.9%) and 2000 worst (58.8%). Condition and history still trump the year.