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MOT History from tests of diesel MERCEDES BENZ UNKNOWNs year 2018

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

mot history
Pass percent:90.32%
(The average a diesel MERCEDES BENZ UNKNOWN year 2018 passes without issue)
Based on:475 MOT Tests
Most common failuresNo# failures
Headlamp aim out of alignment10
Windscreen wiper does not clear the windscreen effectively8
Registration plate lamp issues7
Registration plate issues4
Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g))4
Offside Headlamp not working on dipped beam (4.1.1 (a) (ii))3
Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c))3
Parking brake efficiency below requirements (1.4.2 (a) (i))3
Nearside Rear Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i))2
Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii))2
Offside Rear Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i))2
Supplementary restraint system warning lamp indicates a fault (7.1.6 (a))2
Offside Front Position lamp not working (4.2.1 (a) (ii))2
Nearside Rear Rear fog lamp obviously incorrectly positioned (4.5.4 (a))1
Front Exhaust has a major leak of exhaust gases (6.1.2 (a))1
Prop shaft bearing housing likely to fail centre bearing noisy (6.1.7 (f) (ii))1
Front Lower Suspension arm ball joint excessively worn n/s and o/s (5.3.4 (a) (i))1
Rear fog lamp not working (4.5.1 (a) (ii))1
Nearside Rear Position lamp with a multiple light source more than 1/2 not functioning (4.2.1 (a) (ii))1
Offside Rear fog lamp not working (4.5.1 (a) (ii))1
Brake pipe excessively corroded1
Offside Front Shock absorbers has negligible damping effect (5.3.2 (d))1
Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt CV boot outer clip missing (6.1.7 (g) (ii))1
Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i))1
Rear Brake disc significantly and obviously worn (1.1.14 (a) (i))1
Nearside Front fog lamp lens defective such that emitted light is adversely affected (4.5.1 (b) (ii))1
Brake performance not tested due to condition of rear braking system (1.2.1 (g))1
Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h))1
Passengers airbag obviously inoperative (7.1.5 (c))1
Nearside Side repeater not working (4.4.1 (a) (ii))1
Offside Side repeater not working (4.4.1 (a) (ii))1
Offside Front Lower Suspension arm ball joint excessively worn rear arm (5.3.4 (a) (i))1
Nearside Obligatory mirror seriously damaged, affecting the rear view (3.3 (b) (ii))1
Offside Rear fog lamp missing (4.5.1 (a) (ii))1
Speedometer cannot be illuminated (7.8 (c) (ii))1
Offside Rear Outline marker lamp does not illuminate simultaneously with the position lamps (4.2.2 (a))1
Emissions unable to be completed (8.2.2.2 (e))1
Offside Rear Upper Outline marker lamp not working (4.2.1 (a) (ii))1
Engine MIL inoperative or indicates a malfunction fault code read and warning light extinguished (8.2.1.2 (h))1
Nearside Front Shock absorbers has a serious fluid leak1
Nearside Front Direction indicator incorrect colour Faded to white (4.4.3 (a))1
Offside Front Direction indicator incorrect colour Faded to white (4.4.3 (a))1
Power steering component leaking (2.1.5 (a))1
Nearside Front Outer Track rod end ball joint has excessive play (2.1.3 (b) (i))1
Offside Front Outer Track rod end ball joint has excessive play (2.1.3 (b) (i))1
Nearside Headlamp light source and lamp not compatible (4.1.4 (c))1
Offside Headlamp light source and lamp not compatible (4.1.4 (c))1
Nearside Rear Upper Shock absorbers has an excessively worn bush (5.3.2 (c))1
Offside Rear Outer Seat belt flexible stalk stretched or damaged likely to lead to failure under load Tip seat (7.1.2 (b) (ii))1
Nearside Rear Inner Seat belt not functioning as intended (7.1.2 (c))1
Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i))1
Offside Rear Rear fog lamp not working (4.5.1 (a) (ii))1
Nearside Rear Service brake excessively binding (1.2.1 (f))1
Offside Rear Service brake excessively binding (1.2.1 (f))1
Offside Front Headlamp levelling device inoperative (4.1.5 (a))1
Offside Front Brake hose excessively twisted (1.1.12 (b) (ii))1
Nearside Rear Direction indicator incorrect colour (4.4.3 (a))1
Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength as marked (5.3.6 (a) (i))1
Offside Front Seat belt anchorage prescribed area strength or continuity significantly reduced front seat area as marked (7.1.1 (a) (i))1
Rear Headlamp aim projected beam image is obviously incorrect nearside and offside pattern kick up incorrect (4.1.2 (c))1
Anti-lock braking system warning lamp indicates an ABS fault1
Offside Front Outline marker lamp not working (4.2.1 (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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