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MOT History from tests of diesel MERCEDES BENZ R-CLASSs year 2012

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

mot history
Pass percent:76.97%
(The average a diesel MERCEDES BENZ R-CLASS year 2012 passes without issue)
Based on:838 MOT Tests
Most common failuresNo# failures
Headlamp aim out of alignment26
Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))21
Parking brake efficiency below requirements (1.4.2 (a) (i))19
Nearside Front Position lamp not working (4.2.1 (a) (ii))18
Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g))18
Brake pipe excessively corroded16
Offside Front Position lamp not working (4.2.1 (a) (ii))12
Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))10
Nearside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))8
Nearside Front Coil spring fractured or broken (5.3.1 (b) (i))7
Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii))6
Anti-lock braking system warning lamp indicates an ABS fault6
Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h))6
Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))6
Offside Front Coil spring fractured or broken (5.3.1 (b) (i))4
Windscreen wiper does not clear the windscreen effectively4
Supplementary restraint system warning lamp indicates a fault (7.1.6 (a))4
Brakes imbalanced across an axle4
Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a))3
Offside Parking brake inoperative on one side (1.4.1 (a))3
Electronic stability control warning lamp indicates a fault (7.12 (e))3
Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii))3
Nearside Front Road wheel fixing missing (5.2.1 (a) (i))3
Power steering inoperative and steering adversely affected (2.1.5 (c) (ii))2
Exhaust particulate filter obviously modified (8.2.2.1 (a))2
Nearside Side repeater not working (4.4.1 (a) (ii))2
Service brake efficiency below requirements (1.2.2 (a) (i))2
Rear brake disc in such a condition that it is seriously weakened2
Offside Rear fog lamp not working (4.5.1 (a) (ii))2
Offside Rear Service brake excessively binding (1.2.1 (f))2
Fuel cap/sealing device ineffective (6.1.3 (b) (i))1
Nearside Front Body component insecure bumper. (6.2.1 (a) (i))1
Nearside Front Coil spring fractured or broken At Bottom (5.3.1 (b) (i))1
Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii))1
Nearside Parking brake inoperative on one side (1.4.1 (a))1
Offside Front Upper Suspension arm ball joint dust cover no longer prevents the ingress of dirt Dust cover split (5.3.4 (b) (ii))1
Offside Front Road wheel fixing missing (5.2.1 (a) (i))1
Front Headlamp cleaning device for LED or HID headlamp inoperative (4.1.6 (a) (ii))1
Windscreen in such a condition that visibility through swept area is seriously affected (3.2 (c) (ii))1
Registration plate lamp issues1
Boot lid cannot be secured in the closed position (6.2.1 (e))1
Nearside Rear Suspension bellows leaking (5.3.5 (c))1
Nearside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt boot clip (6.1.7 (g) (ii))1
Offside Side repeater not working (4.4.1 (a) (ii))1
Nearside Front Service brake has no recorded effort at a wheel (1.2.1 (a) (ii))1
Offside Rear Service brake has no recorded effort at a wheel (1.2.1 (a) (ii))1
Offside Rear Brake pipe leaking on a hydraulic braking system (1.1.11 (b) (ii))1
Brake fluid significantly below minimum mark (1.1.10 (d) (ii))1
Brake pedal has insufficient reserve travel (1.1.2 (a))1
Offside Front Track rod end ball joint dust cover insecure so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii))1
Headlamp cleaning device for LED or HID headlamp inoperative (4.1.6 (a) (ii))1
Offside Rear Suspension component leaking air bag (5.3.5 (c))1
Front Drivers view of the road through the swept area of the windscreen significantly affected by an obstruction phone holder stuck to screen unable to remove (3.1 (a) (ii))1
Offside Front Headlamp levelling device inoperative Inner wheel arch (4.1.5 (a))1
Offside Rear Position lamp not working (4.2.1 (a) (ii))1
Nearside Front Track rod end ball joint has excessive play (2.1.3 (b) (i))1
Nearside Brake pipe leaking on a hydraulic braking system front to rear (1.1.11 (b) (ii))1
Brake performance not tested (1.2.1 (g))1
Nearside Front Inner Track rod end ball joint has excessive play (2.1.3 (b) (i))1
Offside Front Inner Track rod end ball joint has excessive play (2.1.3 (b) (i))1
Offside Front Headlamp cleaning device for LED or HID headlamp inoperative (4.1.6 (a) (ii))1
Central Rear Seat belt not functioning as intended (7.1.2 (c))1
Nearside Front Outer Drive shaft flexible coupling excessively deteriorated (6.1.7 (d) (i))1
Brake hose excessively deteriorated1
Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt Split (6.1.7 (g) (ii))1
Offside Front Wheel bearing has excessive play (5.1.3 (a) (i))1
Offside Direction indicator not working (4.4.1 (a) (ii))1
Nearside Front Bumper insecure (6.1.4 (a) (i))1
Front Undertray likely to become detached (6.2.1 (a) (ii))1
Front Bumper insecure (6.1.4 (a) (i))1
Offside Front Bumper insecure (6.1.4 (a) (i))1
Central Rear Seat belt missing clasp not obtainable (7.1.2 (a))1
Nearside Stop lamp(s) not working (4.3.1 (a) (ii))1
Rear Brake disc significantly and obviously worn (1.1.14 (a) (i))1
Front Brake disc significantly and obviously worn (1.1.14 (a) (i))1
Emissions unable to be completed (8.2.2.2 (e))1
Oil leaking continuously from engine posing a serious risk to road safety (8.4.1 (a) (ii))1
Steering column universal joint deformed (2.1.3 (c) (i))1
Fuel system component leaking Top of engine (6.1.3 (b) (i))1
Service brake grabbing severely (1.2.1 (c))1
Offside Rear Road wheel fixing missing (5.2.1 (a) (i))1
Nearside Rear Road wheel fixing missing (5.2.1 (a) (i))1
Nearside Front Shock absorbers has a serious fluid leak1
Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii))1
Nearside Suspension levelling valve damaged or deteriorated and function affected Front & rear. Vehicle has dropped on Nearside (5.3.5 (b) (i))1
Central Rear Seat belt flexible stalk damaged seat belt stalk jammed under seat (7.1.2 (b) (i))1
Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt hole in the boot (6.1.7 (g) (ii))1
Electronic braking system warning device indicates a fault (1.7 (b))1
Stop lamp(s) not working (4.3.1 (a) (ii))1
Nearside Rear Shock absorbers has a serious fluid leak1
Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt split/has a hole (6.1.7 (g) (ii))1
Rear Brake cable damaged snapped (1.1.15 (a))1
Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii))1
Central Stop lamp(s) not working (4.3.1 (a) (ii))1
Nearside Rear Suspension unit damaged or deteriorated and function affected (5.3.5 (b) (i))1
Offside Front Service brake lagging in operation (1.2.1 (d))1
Nearside Rear Service brake excessively binding (1.2.1 (f))1
Offside Front Brake insecure BRAKE HOSE (1.1.21 (c))1
Nearside Rear Road wheel more than one fixing missing (5.2.1 (a) (ii))1
Offside Front Shock absorbers has a serious fluid leak1
Front Windscreen wiper not working (3.4 (a))1
Front Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g))1
Nearside Front Headlamp cleaning device for LED or HID headlamp inoperative (4.1.6 (a) (ii))1
Nearside Rear Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii))1
Offside Rear Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii))1
Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt metal clip undone (6.1.7 (g) (ii))1
Exhaust emissions exceed default limit of 1.5m-1 (8.2.2.2 (b))1
Nearside Rear Brake pipe at imminent risk of failure or fracture leaking (1.1.11 (a))1
Offside Rear Brake pipe at imminent risk of failure or fracture leaking (1.1.11 (a))1
Central Exhaust system insecure exhaust clamp snapped (6.1.2 (a))1
Front brake disc in such a condition that it is seriously weakened1
Front Hydraulic brake calliper damaged both side (1.1.16 (a) (i))1
Offside Front Headlamp aim projected beam image is obviously incorrect lamp stuck in main beam (4.1.2 (c))1
Rear Boot lid cannot be secured in the closed position (6.2.1 (e))1
Nearside Rear Brake pipe leaking on a hydraulic braking system (1.1.11 (b) (ii))1
Nearside Front Service brake excessively binding (1.2.1 (f))1
Offside Front Service brake excessively binding (1.2.1 (f))1
Offside Front Side repeater not working (4.4.1 (a) (ii))1
Registration plate issues1
Offside Bonnet cannot be secured in the closed position (3.1 (b) (i))1
Front Bumper damaged and likely to cause injury when grazed or contacted (6.1.4 (a) (i))1
Rear Service brake excessively fluctuating (1.2.1 (e))1
Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt small clip broken (6.1.7 (g) (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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