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MOT History from tests of diesel MERCEDES BENZ UNKNOWNs year 2004

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:55.19%
(The average a diesel MERCEDES BENZ UNKNOWN year 2004 passes without issue)
Based on:183 MOT Tests
Most common failuresNo# failures
Parking brake efficiency below requirements (1.4.2 (a) (i))13
Headlamp aim out of alignment12
Windscreen wiper does not clear the windscreen effectively11
Brake pipe excessively corroded11
Service brake efficiency below requirements (1.2.2 (a) (i))9
Registration plate lamp issues8
Parking brake: efficiency below requirements |3.7.B.7|6
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 fault5
Brake hose excessively deteriorated4
Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))4
Parking brake efficiency below requirements |1.4.2 |a| |i||4
Rear fog lamp not working (4.5.1 (a) (ii))3
Offside Rear Service brake excessively binding (1.2.1 (f))3
Fuel system component leaking |7.2.3|3
Nearside Side repeater not working (4.4.1 (a) (ii))2
Offside Side repeater not working (4.4.1 (a) (ii))2
Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))2
Nearside Front Anti-roll bar attachment bracket/mounting missing |5.3.3 |a| |ii||2
Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii||2
Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength sill (5.3.6 (a) (i))2
Parking brake lever has no reserve travel |3.1.6b|2
Offside Rear Upper Position lamp not working (4.2.1 (a) (ii))2
Brake master cylinder/servo mounting prescribed area is excessively corroded |1.1.21 |e| |i||2
Offside Brake servo defective or ineffective |1.1.10 |a| |i||2
Central Exhaust has a major leak of exhaust gases |6.1.2 |a||2
Offside Rear Service brake excessively binding |1.2.1 |f||2
Offside Rear Hydraulic brake cylinder leaking hydraulic fluid |1.1.16 |b| |i||2
Nearside Headlamp not working on dipped beam |1.7.5a|2
Offside Stop lamp(s) not working (4.3.1 (a) (ii))2
Offside Front Headlamp not working on main beam (4.1.1 (a) (ii))2
Offside Front Position lamp not working (4.2.1 (a) (ii))2
Offside Front Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i))2
Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c))2
Offside Rear Direction indicator not working (4.4.1 (a) (ii))1
Nearside Front Road wheel fixing missing (5.2.1 (a) (i))1
Nearside Front Exhaust has a major leak of exhaust gases |7.1.2|1
Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a))1
Offside Front Seat belt not functioning as intended front row seat belt not returning (7.1.2 (c))1
Offside Rear Position lamp not working |4.2.1 |a||1
Offside Front Service brake excessively binding |1.2.1 |f||1
Offside Front Brake hose excessively damaged |1.1.12 |b| |ii||1
Front passenger door cannot be opened from inside the vehicle |6.2.3 |a||1
Nearside Rear Braking system leaking air leak from air tank n/s in front of the rear axle |3.6.A.1|1
Offside Front front brake binding |3.7.B.1|1
Nearside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings sill |6.1.B.2|1
Offside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings sill X2 |6.1.B.2|1
Exhaust emissions exceed manufacturers specified limit .92 vs .9 (8.2.2.2 (a))1
Nearside Front Brake pipe leaking on a hydraulic braking system Above subframe, corroded (1.1.11 (b) (ii))1
Service brake efficiency less than 50% of the required value (1.2.2 (a) (ii))1
Offside Front Braking system leaking Calliper (1.1.3 (d))1
Electrical wiring likely to touch hot or rotating parts (4.11 (a) (iii))1
Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b|1
Nearside Track rod end ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii))1
Front Electronic stability control warning lamp indicates a fault (7.12 (e))1
Nearside Outer Seat belt not functioning as intended 4 (7.1.2 (c))1
Offside Rear Inner Seat belt not functioning as intended (7.1.2 (c))1
Anti-lock braking system warning lamp does not illuminate (1.6 (a))1
Nearside Rear Brake hose leaking on a hydraulic braking system (1.1.12 (c) (ii))1
Nearside Rear Suspension bellows damaged or deteriorated and function is seriously affected (5.3.5 (b) (ii))1
Nearside Rear Shock absorbers has a serious fluid leak1
Exhaust has a major leak of exhaust gases silencer box (6.1.2 (a))1
Rear fog lamp switch inoperative (4.5.3 (a) (ii))1
Entrance/exit door defective in operation (9.1.1 (a))1
Central Exhaust system insecure (6.1.2 (a))1
Nearside Parking brake inoperative on one side |1.4.1 |a||1
Nearside Rear Upper Anti-roll bar linkage insecurely attached |5.3.3 |a| |i||1
Offside Rear Rear fog lamp not working connection (4.5.1 (a) (ii))1
Offside Rear Seat belt anchorage loose (7.1.1 (b))1
Offside Front Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii))1
Windscreen damaged and affecting the drivers view of the road (3.2 (a) (ii))1
Nearside Front Track rod end ball joint has excessive play (2.1.3 (b) (i))1
Nearside Vehicle structure corroded to the extent that the rigidity of the assembly is significantly reduced outer sill (6.1.1 (c) (i))1
Nearside Vehicle structure corroded to the extent that the rigidity of the assembly is significantly reduced inner sill (6.1.1 (c) (i))1
Offside Rear Vehicle structure corroded to the extent that the rigidity of the assembly is significantly reduced inner sill (6.1.1 (c) (i))1
Offside Rear Vehicle structure corroded to the extent that the rigidity of the assembly is significantly reduced wheel arch (6.1.1 (c) (i))1
Nearside Rear Vehicle structure corroded to the extent that the rigidity of the assembly is significantly reduced outer sill (6.1.1 (c) (i))1
Nearside Front Position lamp not working (4.2.1 (a) (ii))1
Nearside Stop lamp|s| not working |4.3.1 |a| |ii||1
Nearside Front Direction indicator incorrect colour (4.4.3 (a))1
Offside Front Direction indicator incorrect colour (4.4.3 (a))1
Offside front brake binding |3.7.B.1|1
Rear brake binding1
Supplementary Restraint System warning lamp indicates a fault |5.4.2|1
Offside Rear Stop lamp not working |1.2.1b|1
Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii))1
Nearside Front Headlamp not working on dipped beam |1.7.5a|1
Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2|1
Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2|1
Nearside Outline marker lamp not working X2 |4.2.1 |a||1
Nearside Rear Upper Position lamp not working (4.2.1 (a) (ii))1
Offside Rear Outer Position lamp not working Lower (4.2.1 (a) (ii))1
Offside Drivers door cannot be opened from inside the vehicle (6.2.3 (a))1
Rear fog lamp tell-tale not working |4.9.1 |a| |ii||1
Nearside Position lamp not working |4.2.1 |a||1
Offside Position lamp not working |4.2.1 |a||1
Offside Rear fog lamp does not emit a steady red light INOP |4.5.4 |a||1
Nearside Position lamp switch does not illuminate the front and rear position lamps with a single operation INOP |4.2.2 |a||1
Offside Position lamp switch does not illuminate the front and rear position lamps with a single operation INOP |4.2.2 |a||1
Nearside Rear Outline marker lamp not working |4.2.1 |a||1
Offside Rear Outline marker lamp not working |4.2.1 |a||1
Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i))1
Nearside Front Shock absorbers has an excessively worn bush (5.3.2 (c))1
Nearside Rear Passengers seat insecure (6.2.6 (a) (ii))1
Exhaust emissions exceed level of metered smoke for a turbo charged engine (8.2.2.2 (b))1
Offside Rear Seat belt locking mechanism does not secure or release 1st passenger seat behind the drivers seat. |5.2.5a|1
Nearside Headlamp light intensity severely reduced |4.1.4 |a||1
Offside Headlamp light intensity severely reduced |4.1.4 |a||1
Nearside Rear Anti-roll bar linkage pin or bush excessively worn |5.3.4 |a| |i||1
Exhaust on a vehicle fitted with a diesel particulate filter emits visible smoke of any colour |8.2.2.2 |d||1
Nearside Rear Road wheel more than one fixing loose (5.2.1 (a) (ii))1
Nearside Rear Road wheel fixings not compatible wheel fixing tapers missing (5.2.2 (d))1
Offside Front Side repeater not working (4.4.1 (a) (ii))1
Nearside Rear Leaf spring fractured (5.3.1 (b) (i))1
Headlamp levelling device inoperative (4.1.5 (a))1
Front Drivers seat with a defective structure Drivers seat back not secure, can move it backwards and forwards (6.2.5 (a) (i))1
Nearside Front Outline marker lamp not working and lense missing |4.2.1 |a||1
Driver`s view restricted by object wiper blades do not park |6.9.1a|1
Offside Front Statutory seat belt missing driver |5.1.1|1
Anti-lock braking system warning lamp does not illuminate |1.6 |a||1
Speedometer clearly inoperative |7.8 |b| |ii||1
Offside Rear Air brake cylinder/actuator insecurely mounted and braking performance affected (1.1.16 (c) (ii))1
Offside Parking brake inoperative on one side (1.4.1 (a))1
Brake master cylinder/servo mounting prescribed area is excessively corroded (1.1.21 (e) (i))1
Offside Front Braking system leaking (1.1.3 (d))1
Offside Front Anti-roll bar attachment bracket/mounting fractured (5.3.3 (b) (ii))1
Offside Front Brake hose excessively twisted |1.1.12 |b| |ii||1
Offside Integral body structure or chassis has excessive corrosion, seriously affecting its strength within 30cm of a body mounting second mount |6.2.2 |d| |i||1
Offside Rear Upper Outline marker lamp missing (4.2.1 (a) (ii))1
Offside Rear Outline marker lamp missing middle (4.2.1 (a) (ii))1
Offside Rear Lower Position lamp not working (4.2.1 (a) (ii))1
Offside Rear Direction indicator not working upper or lower (4.4.1 (a) (ii))1
Nearside Front Subframe mounting prescribed area is corroded to the extent that control of the vehicle is likely to be adversely affected (5.3.6 (a) (ii))1
Offside Front Subframe mounting prescribed area is corroded to the extent that control of the vehicle is likely to be adversely affected (5.3.6 (a) (ii))1
Nearside Rear Suspension spring mounting prescribed area so inadequately repaired that control of the vehicle is likely to be adversely affected only welded on 1 side of bracket (5.3.6 (a) (ii))1
Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii))1
Front Service brake excessively fluctuating (1.2.1 (e))1
Rear Service brake excessively fluctuating (1.2.1 (e))1
Offside Rear Position lamp with a multiple light source more than 1/2 not functioning (4.2.1 (a) (ii))1
Emergency exit sign missing From Roof (9.1.2 (b) (ii))1
Nearside Rear Suspension component mounting prescribed area is corroded to the extent that control of the vehicle is likely to be adversely affected Bodywork Around N/S/R Leaf Spring Rear Mounting Excessive Corroded (5.3.6 (a) (ii))1
Vehicle structure corroded to the extent that the rigidity of the assembly is significantly reduced Below Emergency Door Slide (6.1.1 (c) (i))1
Offside Front Leaf spring to axle fixing bolt insecure (5.3.1 (a) (i))1
Main beam tell-tale not working (4.9.1 (a) (ii))1
Nearside Headlamp not working on main beam |1.7.5a|1
Offside Headlamp aim beam image obviously incorrect |1.8.A.1b|1
Fuel pipe leaking above engine |7.2.3|1
Nearside Obligatory mirror seriously damaged, affecting the rear view (3.3 (b) (ii))1
Offside Side repeater not working Damaged (4.4.1 (a) (ii))1
Drag link end ball joint has excessive play joint to hub (2.1.3 (b) (i))1
Drag link end ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt joint to drop arm (2.1.3 (g) (ii))1
Exhaust has a major leak of exhaust gases rear flexi join (6.1.2 (a))1
Offside Front Seat belt anchorage prescribed area strength or continuity significantly reduced inner wheel arch/floor area excessively corroded (7.1.1 (a) (i))1
Offside Side repeater not working and damaged (4.4.1 (a) (ii))1
Exhaust has a major leak of exhaust gases flexi section (6.1.2 (a))1
Rear Drag link end ball joint has excessive play hub end (2.1.3 (b) (i))1
Front Drag link end ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt box end (2.1.3 (g) (ii))1
Offside Rear Position lamp not working (4.2.1 (a) (ii))1
Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b|1
Nearside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2|1
Offside Rear Anti-roll bar has excessive play in a pin/bush |2.4.G.2|1
Nearside Front All position lamps not working |1.1.A.3b|1
Offside Headlamp not working on dipped beam |1.7.5a|1
Nearside Track rod end ball joint has excessive play |2.2.B.1f|1
Nearside 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
Front Drag link end ball joint dust cover insecure so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii))1
Rear Drag link end ball joint dust cover insecure so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii))1
Nearside Vehicle structure is deformed and structural rigidity is significantly reduced under step (6.1.1 (a) (i))1
Nearside Seat belt not functioning as intended no 8 (7.1.2 (c))1
Offside Passengers seat insecure no 4 passenger (6.2.6 (a) (ii))1
Offside Headlamp not working on dipped beam (4.1.1 (a) (ii))1
Nearside Rear Service brake excessively binding (1.2.1 (f))1
Front Windscreen wiper blade missing |8.2.2|1
Electrical wiring damaged, likely to become detached inside cab |1.9.2b|1
Offside Rear Statutory seat belt missing fixing missing |5.1.1|1
Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings both side inner and outer sills rotted |6.1.B.2|1
Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings both side rear quarter inner and outer sills rotted |6.1.B.2|1
Offside Rear Rear fog lamp not working |1.3.2b|1
Nearside Front Track rod end ball joint has excessive play |2.2.B.1f|1
Driver`s view to front impaired by damage |6.9.1b|1
Rear fog lamp not working |1.3.2b|1
Windscreen wiper blade insecure1
Seat belt installation anchorage insecure missing |5.3.1d|1
Nearside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings inner+outer sill |6.1.B.2|1
Offside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings inner+ outer sill |6.1.B.2|1
Headlamp aim projected beam image is obviously incorrect both sides (4.1.2 (c))1
Nearside Rear Window not made of safety glass or safety glazing (3.2 (e))1
Offside Rear Seat belt anchorage prescribed area strength or continuity significantly reduced floor- marked with chalk (7.1.1 (a) (i))1
Nearside Rear Seat belt anchorage prescribed area strength or continuity significantly reduced floor marked with chalk (7.1.1 (a) (i))1
Nearside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength sill (5.3.6 (a) (i))1
Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength out rigger- marked with chalk (5.3.6 (a) (i))1
Nearside Rear Inner Integral body structure or chassis has excessive corrosion, seriously affecting its strength within 30cm of a body mounting SILL (6.2.2 (d) (i))1
Nearside Outer Integral body structure or chassis has excessive corrosion, seriously affecting its strength within 30cm of a body mounting SILL (6.2.2 (d) (i))1
Offside Rear Inner Integral body structure or chassis has excessive corrosion, seriously affecting its strength within 30cm of a body mounting SILL (6.2.2 (d) (i))1
Offside Outer Integral body structure or chassis has excessive corrosion, seriously affecting its strength within 30cm of a body mounting SILL (6.2.2 (d) (i))1
Offside Rear Inner Integral body structure corroded to the extent that the rigidity of the assembly is significantly reduced WHEEL ARCH (6.1.1 (c) (i))1
Nearside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i))1
Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i))1
Front Outer Track rod end seriously misaligned |2.1.3 |e||1
Nearside Rear fog lamp does not emit a steady red light (4.5.4 (a))1
Offside Rear fog lamp does not emit a steady red light (4.5.4 (a))1
Offside Rear Suspension component mounting prescribed area excessively damaged significantly reducing structural strength outer sill/closure panel (5.3.6 (a) (i))1
Nearside Front Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i))1
Offside Front Headlamp insecure (4.1.1 (c))1
Outline marker lamp not working (4.2.1 (a) (ii))1
Emergency exit sign missing |6.2.D.3|1
Emergency exit window ???break glass` hammer missing |6.2.D.2|1
Nearside Outline marker lamp not working center marker |4.2.1 |a||1
Nearside Front Upper Outline marker lamp not working |4.2.1 |a||1
Service brake efficiency below requirements |1.2.2 |a| |i||1
Nearside Front Vehicle structure corroded to the extent that the rigidity of the assembly is significantly reduced main cab step, (entrance step) excess corrosion (6.1.1 (c) (i))1
Offside Rear Vehicle structure corroded to the extent that the rigidity of the assembly is significantly reduced inner and outer sill excess corrosion, close to chassis rail and rear spring front hanger (6.1.1 (c) (i))1
Offside Front Position lamp not working |4.2.1 |a||1
Oil leaking excessively from engine |8.4.1 |a| |i||1
Nearside Headlamp levelling device inoperative (4.1.5 (a))1
Offside Rear Suspension system inoperative (5.3.5 (a))1
Offside Rear Suspension accumulator damaged or deteriorated and function affected (5.3.5 (b) (i))1
Central Exhaust has a major leak of exhaust gases (6.1.2 (a))1
Offside Front Suspension component mounting prescribed area fractured to the extent that control of the vehicle is likely to be adversely affected subframe mounting area (5.3.6 (a) (ii))1
Brakes imbalanced across an axle1
Nearside Rear Position lamp not working (4.2.1 (a) (ii))1
Stop lamp(s) all not working (4.3.1 (a) (iii))1
Nearside Rear Outline marker lamp not working (4.2.1 (a) (ii))1
Offside Front Suspension component mounting prescribed area is corroded to the extent that control of the vehicle is likely to be adversely affected subframe mounting mounting area (5.3.6 (a) (ii))1
Offside Body panel insecure (6.2.1 (a) (i))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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