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MOT History from tests of diesel MERCEDES BENZ CLAs year 2020

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

mot history
Pass percent:92.60%
(The average a diesel MERCEDES BENZ CLA year 2020 passes without issue)
Based on:3,094 MOT Tests
Most common failuresNo# failures
Headlamp aim out of alignment75
Windscreen wiper does not clear the windscreen effectively25
Registration plate issues20
Offside Front Coil spring fractured or broken (5.3.1 (b) (i))5
Parking brake efficiency below requirements (1.4.2 (a) (i))5
Offside Front Headlamp insecure (4.1.1 (c))4
Windscreen washer not working 4
Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g))4
Nearside Front Road wheel fixing missing (5.2.1 (a) (i))3
Brakes imbalanced across an axle3
Nearside Rear Position lamp not working (4.2.1 (a) (ii))3
Supplementary restraint system warning lamp indicates a fault (7.1.6 (a))3
Nearside Front Coil spring fractured or broken (5.3.1 (b) (i))3
Offside Rear Coil spring fractured or broken (5.3.1 (b) (i))2
Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))2
Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))2
Nearside Rear Other passenger door cannot be opened from outside the vehicle (6.2.3 (a))2
Offside Front Service brake excessively binding (1.2.1 (f))2
Nearside Parking brake inoperative on one side (1.4.1 (a))2
Nearside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i))2
Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i))2
Nearside Rear Suspension arm pin or bush excessively worn trailing arm (5.3.4 (a) (i))2
Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii))1
Offside Front Headlamp insecure light unit damaged and insecure causing beam to be excessively high. (4.1.1 (c))1
Nearside Front Road wheel fractured Alloy cracked (5.2.2 (a))1
Nearside Front Inner Road wheel badly distorted edge. (5.2.2 (c) (i))1
Offside Side repeater not working (4.4.1 (a) (ii))1
Nearside Front Road wheel fractured (5.2.2 (a))1
Drivers airbag obviously inoperative (7.1.5 (c))1
Offside Rear Service brake grabbing severely (1.2.1 (c))1
Windscreen washer jets misaligned and not providing sufficient fluid to the windscreen both fronts (3.5 (a))1
Windscreen damaged and affecting the drivers view of the road Chip plus cracking to windscreen zone A greater than 10mm in diameter (3.2 (a) (ii))1
Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii))1
Central Rear Seat belt missing (7.1.2 (a))1
Offside Front Inner Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))1
Rear brake disc in such a condition that it is seriously weakened1
Brake hydraulic reservoir cap missing (1.1.10 (e))1
Offside Front Inner Brake disc significantly and obviously worn (1.1.14 (a) (i))1
Nearside Rear Seat belt webbing significantly weakened (7.1.2 (b) (ii))1
Nearside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))1
Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))1
Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))1
Nearside Front Inner Position lamp not working (4.2.1 (a) (ii))1
Nearside Front Suspension arm ball joint likely to become detached (5.3.4 (a) (ii))1
Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))1
Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i))1
Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i))1
Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h))1
Offside Front Anti-roll bar ball joint excessively worn (5.3.4 (a) (i))1
Emission control equipment obviously defective Ad blue metering valve leaking (8.2.2.1 (a))1
Nearside Headlamp insecure (4.1.1 (c))1
Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i))1
Brake hydraulic reservoir cap missing cap found on scuttle panel and refitted (1.1.10 (e))1
Offside Front Track rod end ball joint has excessive play (2.1.3 (b) (i))1
Nearside Rear Hydraulic brake calliper leaking (1.1.16 (b) (i))1
Offside Rear Hydraulic brake calliper leaking (1.1.16 (b) (i))1
Nearside Front Road wheel more than one fixing missing (5.2.1 (a) (ii))1
Offside Rear Body component damaged and likely to cause injury lamp unit smashed/sharp edges (6.2.1 (a) (i))1
Rear Brake disc significantly and obviously worn (1.1.14 (a) (i))1
Rear Brake lining(s) less than 1.5 mm thick (1.1.13 (a) (ii))1
Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))1
Nearside Rear Seat belt buckle not functioning as intended (7.1.2 (d))1
Headlamp not working on dipped beam headlamp doesnt work + lens broken (4.1.1 (a) (ii))1
Rear Brake disc significantly and obviously worn Both (1.1.14 (a) (i))1
Service brake efficiency below requirements (1.2.2 (a) (i))1
Engine MIL inoperative or indicates a malfunction Engine management light on dash (8.2.2.2 (g))1
Nearside Rear Parking brake inoperative on one side (1.4.1 (a))1
Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i))1
Nearside Rear Seat belt missing behide seat (7.1.2 (a))1
Offside Rear Suspension arm pin or bush excessively worn trailing arm (5.3.4 (a) (i))1
Nearside Rear Brake hose excessively twisted (1.1.12 (b) (ii))1
Nearside Steering rack gaiter missing or no longer prevents the ingress of dirt (2.1.3 (g) (ii))1
Nearside Rear Suspension arm pin or bush excessively worn Trailing arm bush split (5.3.4 (a) (i))1
Offside Rear Suspension arm pin or bush excessively worn Trailing arm bush split (5.3.4 (a) (i))1
Front Windscreen washer jets misaligned and not providing sufficient fluid to the windscreen (3.5 (a))1
Nearside Rear Inner Position lamp not working (4.2.1 (a) (ii))1
Offside Front Service brake excessively fluctuating (1.2.1 (e))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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