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

CPI

61.2%
first-time pass rate
28.9%
failed outright
8,526
MOT tests, 2005–2025

What fails a CPI

failure defects across all CPI models · advisories excluded

lighting and signalling is CPI's most common failure — 15.1% of all CPI tests record one.

Component groupShare of defects% of testsWorst offenders
lighting and signalling
15.1 see ranking
steering and suspension
12.6 see ranking
brakes
10.9 see ranking
tyres and wheels
4.7 see ranking
lamps and reflectors
2.6 see ranking

Top failure groups aggregated across every CPI model, 2005–2025. "% of tests" = share of the make's tests recording at least one defect in that group.

CPI models, ranked by test volume

21 models with ≥ 100 normal tests, 2005–2025
Model Pass rate Pass % Fail % Median miles Tests
OLIVER
60.2 29.3 6,058 1,135
SM 50
52.8 37.7 5,094 741
GTR
62.2 30.1 4,519 621
SUPERMOTO
53.0 35.4 5,748 455
FORMULA R 50
57.0 29.1 5,242 440
POPCORN
63.5 26.0 8,016 427
HUSSAR JR 50
65.3 27.3 9,087 400
ARAGON 50 GP
65.4 24.9 4,838 393
ARAGON
66.8 25.1 5,066 371
BRAVO
72.6 20.2 4,264 307
ARAGON 125
63.5 22.9 6,814 288
ARAGON 50
63.5 26.7 5,172 277
SUV
59.3 32.6 2,663 258
SX 50
47.2 41.9 4,818 229
BRAVO 50
72.4 20.1 5,088 199
OLIVER CITY
59.9 30.7 5,005 137
SUPERCROSS
60.6 31.4 6,080 137
FORMULA
61.8 27.2 3,144 136
BRAVO 125
57.7 28.5 4,884 130
HUSSAR
64.3 32.1 9,123 112
SUV 125
53.6 32.7 2,764 110

Normal tests only. Median miles is odometer reading at test where recorded. Source: DVSA anonymised MOT results, 2005–2025.