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MOT History from tests of petrol DERBI UNKNOWNs year 2015

Review the list of common DERBI UNKNOWN failures below or to perform a specific mot history check on your DERBI then use our popular KnowYourCar service

mot history
Pass percent:68.42%
(The average a petrol DERBI UNKNOWN year 2015 passes without issue)
Based on:133 MOT Tests
Most common failuresNo# failures
Rear Rear reflector missing (4.8.2 (a) (ii))5
Headlamp aim out of alignment4
Rear Brake excessively binding (1.2.1 (f))3
Drive chain excessively loose (6.1.7 (c) (i))3
Rear reflector missing |4.8.2 |a| |ii||3
Registration plate lamp issues3
Offside Front Direction indicator not working (4.4.1 (a) (ii))3
Front Headlamp not working on dipped beam (4.1.1 (a) (ii))2
Drive chain so loose it is likely to fail (6.1.7 (c) (ii))2
Rear Drive chain so worn it is likely to fail (6.1.7 (c) (ii))2
Front Headlamp not working on main beam (4.1.1 (a) (ii))2
Rear Wheel spoke missing (5.2.2 (d))2
Front Position lamp not working (4.2.1 (a))2
Offside Rear Direction indicator not working (4.4.1 (a) (ii))2
Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii||1
Throttle operating incorrectly |6.2.7 |a| |i||1
Front position lamp does not illuminate immediately when switched on |1.1.3a|1
All direction indicators missing |4.4.1 |a| |ii||1
Drive chain excessively loose |6.1.7 |c| |i||1
Nearside Rear Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii||1
Offside Front Lower Shock absorber has a serious fluid leak |5.3.2 |b||1
Nearside Front Lower Shock absorber has a serious fluid leak |5.3.2 |b||1
Front Brake excessively binding |1.2.1 |f||1
Rear Brake excessively binding |1.2.1 |f||1
Nearside Rear Drive chain so worn it is likely to fail |6.1.7 |c| |ii||1
Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii))1
Front Valve stem seriously damaged (5.2.3 (j))1
Front Wheel more than one fixing loose (5.2.1 (a) (ii))1
Nearside Front Direction indicator missing (4.4.1 (a) (ii))1
Offside Front Direction indicator missing (4.4.1 (a) (ii))1
Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii))1
Throttle operating incorrectly (6.2.7 (a) (i))1
Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii))1
Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii))1
Drive chain worn to excess (6.1.7 (c) (i))1
All direction indicators missing (4.4.1 (a) (ii))1
Front Brake excessively binding (1.2.1 (f))1
Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b))1
Rear Wheel spoke excessively corroded (5.2.2 (d))1
Stop lamp not working |4.3.1 |a| |ii||1
Drive chain so worn it is likely to fail |6.1.7 |c| |ii||1
Front Exhaust has a major leak of exhaust gases leaking and loose at cylinder head (6.1.2 (a))1
Rear reflector missing (4.8.2 (a) (ii))1
Horn control defective |1.7.2a|1
Front Shock absorber has a serious fluid leak both seals (5.3.2 (b))1
Front Headlamp aim not tested |4.1.2 |b||1
Direction indicator adversely affected by the operation of another lamp (4.4.3 (b))1
Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii))1
Front Position lamp not working |4.2.1 |a||1
Front Stop lamp not working (4.3.1 (a) (ii))1
Rear Stop lamp not working (4.3.1 (a) (ii))1
Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii))1
Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii))1
Rear Brake disc contaminated (1.1.14 (b))1
Indicator switch inoperative Unable to test direction indicators. (4.4.2 (a) (ii))1
Headlamp aim not tested Headlamp unit insecure on mountings. (4.1.2 (b))1
Headlamp aim projected beam image obviously incorrect (4.1.2 (c))1
Horn not working (7.7 (a))1
Brake master cylinder insecure rear brake pivot exess free play (1.1.10 (c))1
Headlamp insecure (4.1.1 (c))1
Offside Front Shock absorber has a serious fluid leak (5.3.2 (b))1
Nearside Rear Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii))1
Central Rear Rear reflector missing (4.8.2 (a) (ii))1
Headlamp not working on main beam (4.1.1 (a) (ii))1
Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii))1
Central Riders seat insecure (6.2.5 (a) (ii))1
Front Shock absorber has a serious fluid leak (5.3.2 (b))1
All direction indicators missing front and rear (4.4.1 (a) (ii))1
Front Headlamp aim unable to be tested (4.1.2 (b))1
Offside Exhaust system insecure (6.1.2 (a))1
Offside Exhaust has a major leak of exhaust gases (6.1.2 (a))1
Front Wheel spindle locking device missing (5.2.1 (d))1
Nearside Rear Footrest missing (6.2.12 (a))1
Rear Stop lamp likely to become detached (4.3.1 (c) (ii))1
Rear Stop lamp not working no operation of brake light from front brake lever (4.3.1 (a) (ii))1

We get to these numbers by trawling through over 1 billion MOT test results since 2004 and crunched the numbers. We remove anything to do with Tyres, as they are model independent and group together common non-model specific issues. We are trying to get to a picture of what models have what issues.

Please note: We take the data from the DVSA. This data is raw and can contain typos and spelling mistakes that garages may have entered while recording a MOT result. Specifically miss-match on names of models and makes. We are constantly cleaning the data so bear with the odd issue.

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