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MOT History from tests of diesel MERCEDES BENZ 300s year 1984

Review the list of common MERCEDES BENZ 300 failures below or to perform a specific mot history check on your MERCEDES BENZ then use our popular KnowYourCar service

mot history
Pass percent:67.76%
(The average a diesel MERCEDES BENZ 300 year 1984 passes without issue)
Based on:1,461 MOT Tests
Most common failuresNo# failures
Headlamp aim out of alignment102
Registration plate lamp issues61
Brake pipe excessively corroded58
Windscreen wiper does not clear the windscreen effectively57
Brake hose excessively deteriorated42
Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|38
Parking brake: efficiency below requirements |3.7.B.7|34
Brakes imbalanced across an axle33
Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|32
Service brake: efficiency below requirements |3.7.B.7|29
Offside Rear fog lamp not working |1.3.2b|27
Rear parking brake recording little or no effort25
Rear brake binding22
Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|22
Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|20
Nearside Stop lamp not working |1.2.1b|19
Exhaust has a major leak of exhaust gases |7.1.2|18
Registration plate issues18
Exhaust emits an excessive level of metered smoke for a non-turbo charged engine |7.4.B.3b|17
Nearside Front position lamp|s| not working |1.1.A.3b|17
Hazard warning switch faulty |1.4.B.1d|14
Offside Headlamp not working on dipped beam |1.7.5a|13
Offside Stop lamp not working |1.2.1b|12
Nearside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|12
Fuel system component leaking |7.2.3|11
Nearside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6|11
Nearside Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3|11
Offside Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3|11
Rear brake application uneven11
Parking brake lever has no reserve travel |3.1.6b|11
Rear Exhaust has a major leak of exhaust gases |7.1.2|11
Offside Rear Rear fog lamp not working |1.3.2b|10
Horn not working |1.6.2a|10
Offside front brake binding |3.7.B.1|10
Offside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6|10
Front Fuel pipe leaking |7.2.3|9
Rear fog lamp tell tale not working |1.3.1b|9
Offside Front position lamp|s| not working |1.1.A.3b|9
Offside Seat belt anchorage prescribed area is excessively corroded |5.2.6|9
Nearside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6|9
Offside Track rod end ball joint has excessive play |2.2.B.1f|8
Front Exhaust has a major leak of exhaust gases |7.1.2|8
Offside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|8
Nearside rear brake recording little or no effort |3.7.B.5a|8
Nearside Headlamp not working on dipped beam |1.7.5a|8
Battery insecure |1.9.1|8
Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|8
Steering system has excessive free play detected at the steering wheel |steering box fitted| |2.2.A.1a|8
Nearside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2|7
Nearside Track rod end ball joint has excessive play |2.2.B.1f|7
Nearside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|7
Nearside Front Track rod end ball joint has excessive play |2.2.B.1f|7
Rear Exhaust mounting missing |7.1.1b|7
Nearside Rear Body has a sharp edge caused by corrosion |6.1.C.1|7
Rear fog lamp not working |1.3.2b|7
Offside rear brake recording little or no effort |3.7.B.5a|7
Nearside Seat belt anchorage prescribed area is excessively corroded |5.2.6|7
Offside Front coil spring fractured |2.4.C.1a|7
Offside Headlamp not working on main beam |1.7.5a|6
Nearside front brake binding |3.7.B.1|6
Nearside Rear position lamp|s| not working |1.1.A.3b|6
Offside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2|6
Parking brake efficiency below requirements (1.4.2 (a) (i))6
Offside Rear coil spring fractured |2.4.C.1a|6
Windscreen has damage6
Offside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6|6
Nearside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|6
Offside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|6
Nearside Rear Stop lamp not working |1.2.1b|6
Front brake application uneven5
Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|5
Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|5
Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a|5
Nearside Rear coil spring fractured |2.4.C.1a|5
Emissions not tested |7.0|5
Centre Exhaust has a major leak of exhaust gases |7.1.2|5
Nearside Front front brake binding |3.7.B.1|5
Offside Headlamp not in good working order adversely affecting beam image |1.2.4a|5
Direction indicators not working |1.4.A.2c|5
Exhaust system not adequately supported |7.1.1|5
Offside Front Shock absorber has a serious fluid leak |2.7.3|4
Offside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|4
Nearside Front Shock absorber has a serious fluid leak |2.7.3|4
Nearside Front wheel bearing has excessive play |2.5.A.3c|4
Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2|4
Offside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|4
Offside Rear Body has a sharp edge caused by corrosion |6.1.C.1|4
Nearside Front coil spring fractured |2.4.C.1a|4
Offside Rear rear brake recording little or no effort |3.7.B.5a|4
Hazard warning tell tale not working correctly |1.4.B.1e|4
Nearside Rear rear brake recording little or no effort |3.7.B.5a|4
Offside Front front brake binding |3.7.B.1|4
Nearside Front Front wheel bearing has excessive play |2.5.A.3c|4
Offside Headlamp aim beam image kick up to the offside |1.8|4
Offside Rear Stop lamp not working |1.2.1b|4
Nearside Front Lower Suspension arm ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2|4
Offside Front Lower Suspension arm ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2|4
Offside Front Front position lamp|s| not working |1.1.A.3b|4
Fuel pipe leaking |7.2.3|4
Rear Exhaust system not adequately supported |7.1.1|4
Nearside Front Headlamp not working on dipped beam |1.7.5a|4
Nearside Front Front position lamp|s| not working |1.1.A.3b|4
Offside Front Headlamp not working on dipped beam |1.7.5a|4
Centre Rear Statutory seat belt missing |5.1.1|3
Nearside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2|3
Nearside Front Windscreen wiper blade deteriorated |8.2.2|3
Nearside Front Drag link end ball joint has excessive play |2.2.B.1f|3
Nearside Inner Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6|3
Nearside Inner Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|3
Offside Inner Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|3
Nearside Front Position lamp not working (4.2.1 (a) (ii))3
Rear Rear fog lamp not working |1.3.2b|3
Brake pedal creeps down when held under pressure |3.3.B.1a|3
Windscreen washer not working 3
Offside Front Body has a sharp edge caused by corrosion |6.1.C.1|3
Offside Inner Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|3
Rear fog lamp missing |1.3.2a|3
Offside Rear Lower Seat belt anchorage prescribed area is excessively corroded |5.2.6|3
Offside Front Upper Suspension component mounting prescribed area is excessively corroded |2.4.A.3|3
Nearside Rear Suspension arm corroded and seriously weakened |2.4.G.1|3
Nearside Rear Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2|3
Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2|3
Offside Rear wheel bearing has excessive play |2.6.2|3
Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a|3
Brake load sensing valve linkage defective and function impaired |3.6.E.3|3
Nearside Headlamp aim beam image kick up to the offside |1.8|3
Nearside Steering arm has relative movement at its fixings |2.2.B.1h|3
Front Fuel system component leaking |7.2.3|3
Nearside Drag link end ball joint has excessive play |2.2.B.1f|3
Mechanical brake component has restricted free movement3
Nearside Rear Shock absorber has a serious fluid leak |2.7.3|3
Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b|3
Nearside Front Lower Suspension arm ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2|3
Exhaust emits excessive smoke or vapour of any colour |7.4.B.4|3
Nearside Front Shock absorber has negligible damping effect |2.7.5|3
Nearside Rear Shock absorber has negligible damping effect |2.7.5|3
Offside Rear Shock absorber has negligible damping effect |2.7.5|3
Nearside Headlamp not working on main beam |1.7.5a|3
Offside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2|3
Offside Outer Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|3
Service brake efficiency below requirements (1.2.2 (a) (i))3
Rear Brake load sensing valve linkage defective and function impaired |3.6.E.3|3
Nearside Inner Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|3
Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b|2
Nearside Rear wheel bearing has excessive play |2.6.2|2
Offside Side repeater not working |1.4.A.2c|2
Nearside Side repeater not working |1.4.A.2c|2
Offside Inner Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6|2
Anti-lock braking system warning lamp indicates an ABS fault2
Brake hose damaged2
Offside Rear Service brake excessively binding (1.2.1 (f))2
Offside Rear Coil spring fractured or broken (5.3.1 (b) (i))2
Parking brake efficiency below requirements |1.4.2 |a| |i||2
Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii))2
Offside Front Track rod end ball joint has excessive play |2.2.B.1f|2
Offside Rear Brake hose twisted |3.6.B.4c|2
Offside Front Drag link end ball joint has excessive play |2.2.B.1f|2
Nearside Rear Body has a sharp edge caused by damage |6.1.C.1|2
Nearside Front Brake pipe leaking |3.6.A.1|2
Nearside Outer Track rod end ball joint has excessive play |2.2.B.1f|2
Offside Outer Track rod end ball joint has excessive play |2.2.B.1f|2
Nearside Rear Shock absorber detached |2.7.2b|2
Nearside Front Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a|2
Offside Front Ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c|2
Nearside Rear Upper Suspension component mounting prescribed area is excessively corroded |2.4.A.3|2
Offside Front Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c|2
Offside Rear Direction indicator not working |1.4.A.2c|2
Nearside Rear Braking system leaking |3.6.A.1|2
Nearside Rear coil spring incomplete |2.4.C.1a|2
Offside Rear coil spring broken |2.4.C.1a|2
Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b|2
Rear fog lamp not working (4.5.1 (a) (ii))2
rear brakes release unevenly |3.7.B.4|2
Offside Front Front wheel bearing has excessive play |2.5.A.3c|2
Offside Outer Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3|2
Offside Front Obligatory mirror seriously damaged, affecting the rear view |8.1.2a|2
Suspension component mounting prescribed area is excessively corroded |2.4.A.3|2
Offside Front Steering pivot point has excessive play |2.2.B.1g|2
Braking system leaking |3.6.A.1|2
Front passenger door cannot be opened from outside the vehicle |6.2.B.1b|2
Nearside Rear Brake hose twisted |3.6.B.4c|2
Nearside Front Upper Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2|2
Offside Front Lower Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|2
Offside Front Upper Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|2
Offside Front Service brake excessively binding (1.2.1 (f))2
Rear Fuel pipe leaking |7.2.3|2
Nearside Front Suspension arm ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2|2
Service brake efficiency less than 50% of the required value (1.2.2 (a) (ii))2
Offside Front brake disc excessively pitted |3.5.1h|2
Steering box has relative movement between sector shaft and the drop arm |2.2.B.1b|2
Nearside Front Lower Ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c|2
Nearside Rear Rear position lamp|s| not working |1.1.A.3b|2
All direction indicators not working (4.4.1 (a) (ii))2
Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|2
Stop lamp not working |1.2.1b|2
Power steering pump leaking from a failed joint |2.3.3b|2
Rear Exhaust has part of the system excessively deteriorated |7.1.1a|2
Brake valve leaking |3.6.A.1|2
Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2|2
Offside Front wheel bearing has excessive play |2.5.A.3c|2
Nearside Front Headlamp not in good working order adversely affecting beam image |1.2.4a|2
Nearside Front Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c|2
Fuel hose leaking |7.2.3|2
Anti-lock braking system warning lamp does not illuminate |3.4.1b|2
Offside Rear Sub-frame attachment bracket/mounting corroded and its strength is seriously reduced |2.4.G.1|2
Nearside Rear Sub-frame attachment bracket/mounting corroded and its strength is seriously reduced |2.4.G.1|2
Nearside Windscreen wiper blade deteriorated |8.2.2|2
Nearside Outer Seat belt anchorage prescribed area is excessively corroded |5.2.6|2
Offside Front Windscreen wiper blade deteriorated |8.2.2|2
Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f|2
Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f|2
Nearside Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|2
Offside Rear Brake pipe leaking |3.6.A.1|2
Hazard warning lamps inoperative |1.4.B.1b|2
Offside Rear Fluid suspension pipe leaking |2.4.D.2|2
Offside Front Drag link end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c|2
Nearside Rear Service brake excessively binding |1.2.1 |f||2
Nearside Rear Vehicle structure has excessive corrosion which adversely affects braking or steering |6.1.A.1|2
Nearside Steering pivot point has excessive play |2.2.B.1g|2
Nearside Rear Direction indicator not working |1.4.A.2c|2
Offside Rear brake disc excessively pitted |3.5.1h|2
Steering box has a significant oil leak |2.2.D.2e|2
Offside Front coil spring cracked |2.4.C.1a|2
Offside Front Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|2
Nearside Rear brake disc excessively pitted |3.5.1h|2
Windscreen wiper blade deteriorated |8.2.2|2
Nearside Inner Front Track rod end ball joint has excessive play |2.2.B.1f|2
Nearside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|2
Nearside Rear Suspension arm rubber mounting deteriorated resulting in excessive movement |2.4.G.2|2
Centre Exhaust mounting missing |7.1.1b|2
Fuel tank leaking |7.2.3|2
Offside Rear Body or chassis has an unsatisfactory modification, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|2
Nearside Rear coil spring cracked |2.4.C.1a|2
Rear fog lamp switch faulty |1.3.1a|2
Nearside Headlamp not working on main beam (4.1.1 (a) (ii))2
Rear Shock absorber has negligible damping effect |2.7.5|2
Nearside Rear Brake pipe leaking |3.6.A.1|2
Offside Rear coil spring cracked |2.4.C.1a|2
Nearside Front Direction indicator not working (4.4.1 (a) (ii))2
Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i))2
Nearside Front Headlamp not working on main beam |1.7.5a|2
Offside Rear Vehicle structure has excessive corrosion which adversely affects braking or steering |6.1.A.1|2
Offside Outer Seat belt anchorage prescribed area is excessively corroded |5.2.6|2
Nearside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3|2

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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