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MOT History from tests of petrol MERCEDES BENZ 450s year 1979

Review the list of common MERCEDES BENZ 450 failures below or to perform a specific mot history check on your MERCEDES BENZ then use our popular KnowYourCar service

mot history
Pass percent:72.34%
(The average a petrol MERCEDES BENZ 450 year 1979 passes without issue)
Based on:2,274 MOT Tests
Most common failuresNo# failures
Headlamp aim out of alignment193
Windscreen wiper does not clear the windscreen effectively60
Brake pipe excessively corroded55
Registration plate lamp issues49
Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|40
Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|39
Rear brake binding38
Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|37
Exhaust emissions carbon monoxide content excessive |7.3.B.1a|36
Parking brake: efficiency below requirements |3.7.B.7|35
Registration plate issues34
Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|33
Brake hose excessively deteriorated30
Exhaust has a major leak of exhaust gases |7.1.2|28
Brakes imbalanced across an axle28
Service brake: efficiency below requirements |3.7.B.7|26
Nearside Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3|25
Offside Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3|22
Driver`s seat cannot be secured in the upright position. |6.2.A.2|20
Centre Exhaust has a major leak of exhaust gases |7.1.2|20
Offside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|19
Rear Exhaust has a major leak of exhaust gases |7.1.2|18
Offside Stop lamp not working |1.2.1b|16
Horn not working |1.6.2a|16
Nearside Stop lamp not working |1.2.1b|15
Offside Seat belt anchorage prescribed area is excessively corroded |5.2.6|14
Offside front brake binding |3.7.B.1|13
Rear parking brake recording little or no effort13
Offside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3|13
Nearside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|13
Offside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|12
Battery insecure |1.9.1|12
Front passenger seat cannot be secured in the upright position. |6.2.4|12
Nearside front brake binding |3.7.B.1|11
Offside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|11
Nearside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|11
Nearside Headlamp not working on dipped beam |1.7.5a|11
Nearside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|10
Nearside Front position lamp|s| not working |1.1.A.3b|10
Offside Front position lamp|s| not working |1.1.A.3b|9
Offside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|9
Offside Headlamp not working on main beam |1.7.5a|9
Offside Headlamp not working on dipped beam |1.7.5a|9
Nearside Seat belt anchorage prescribed area is excessively corroded |5.2.6|9
Front Exhaust has a major leak of exhaust gases |7.1.2|9
Exhaust emissions hydrocarbon content excessive |7.3.B.1b|8
Brake hose damaged8
Nearside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3|8
Windscreen washer not working 8
Offside Front front brake binding |3.7.B.1|8
Offside Driver`s seat cannot be secured in the upright position. |6.2.A.2|7
Brake performance not tested |3.7.A.1|7
Nearside Rear Stop lamp not working |1.2.1b|7
Offside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6|7
Rear Exhaust system not adequately supported |7.1.1|7
Front brake application uneven7
Offside Front Shock absorber has a serious fluid leak |2.7.3|7
Nearside Front passenger seat cannot be secured in the upright position. |6.2.4|6
Emissions not tested |7.0|6
Offside Front Brake hose bulging under pressure |3.6.B.3|6
Fuel system component leaking |7.2.3|6
Nearside Headlamp not working on main beam |1.7.5a|6
Nearside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|6
Steering system has excessive free play detected at the steering wheel |steering box fitted| |2.2.A.1a|6
Offside Inner Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|6
Driver`s seat insecure |6.2.A.1|6
Centre Exhaust system not adequately supported |7.1.1|6
Nearside Front Steering component mounting prescribed area is excessively corroded |2.2.C.1h|6
Offside Front Seat belt damaged sufficient to obstruct correct operation of the belt |5.2.2a|6
Offside Rear Stop lamp not working |1.2.1b|5
Direction indicators not working |1.4.A.2c|5
Rear Exhaust mounting missing |7.1.1b|5
Exhaust system not adequately supported |7.1.1|5
Offside Rear position lamp|s| not working |1.1.A.3b|5
Suspension component mounting prescribed area is excessively corroded |2.4.A.3|5
Nearside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6|5
Offside Front Direction indicator not working |1.4.A.2c|5
Rear fog lamp tell tale not working |1.3.1b|4
Nearside Front Front position lamp|s| not working |1.1.A.3b|4
Rear Stop lamp not working |1.2.1b|4
front brake binding |3.7.B.1|4
Nearside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|4
Nearside Front Headlamp not working on dipped beam |1.7.5a|4
Offside rear brake recording little or no effort |3.7.B.5a|4
Windscreen wiper blade insecure4
Stop lamp not working |1.2.1b|4
Rear Mechanical brake component has restricted free movement4
Nearside Inner Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|4
Hazard warning switch faulty |1.4.B.1d|4
Front passenger seat insecure |6.2.3|4
Fuel pipe leaking |7.2.3|4
Rear Exhaust has part of the system excessively deteriorated |7.1.1a|4
Offside Front Seat belt retracting mechanism defective |5.2.5b|4
Nearside Front Exhaust has a major leak of exhaust gases |7.1.2|4
Offside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|4
Mechanical brake component has restricted free movement4
Nearside Front Seat belt damaged sufficient to obstruct correct operation of the belt |5.2.2a|4
Nearside Front front brake binding |3.7.B.1|4
Windscreen has damage4
Nearside Front Vehicle structure has excessive corrosion which adversely affects braking or steering |6.1.A.1|4
Nearside Front Shock absorber has a serious fluid leak |2.7.3|4
Nearside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6|3
Offside Front Seat belt insecurely fixed to the seat |5.2.1a|3
Nearside Rear Body has a sharp edge caused by corrosion |6.1.C.1|3
Offside Front wheel bearing rough when rotated |2.5.A.2|3
Offside Rear fog lamp not working |1.3.2b|3
Offside Rear Braking system leaking |3.6.A.1|3
Brake pedal spongy |3.3.B.1b|3
Front Windscreen wiper not operating automatically when switched on |8.2.1b|3
Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f|3
Nearside Driver`s seat cannot be secured in the upright position. |6.2.A.2|3
Offside Rear Brake hose bulging under pressure |3.6.B.3|3
Front brake disc in such a condition that it is seriously weakened3
Nearside Front Passenger`s seat cannot be secured in the upright position. |6.2.A.2|3
Nearside Rear brake disc excessively pitted |3.5.1h|3
Nearside Inner Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|3
Offside Front Steering component mounting prescribed area is excessively corroded |2.2.C.1h|3
An item not tested |Manual|3
Steering box has relative movement between sector shaft and the drop arm |2.2.B.1b|3
Offside Front Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|3
Driver`s seat fore and aft adjustment mechanism not functioning as intended. |6.2.A.3|3
Rear Fuel system component leaking |7.2.3|3
Nearside Front Brake hose bulging under pressure |3.6.B.3|3
Nearside Rear Exhaust system not adequately supported |7.1.1|3
Parking brake: efficiency below requirements |3.7.C.1b|3
Nearside Indicator tell tale inoperative |1.4.A.2a|3
Offside Rear rear brake recording little or no effort |3.7.B.5a|3
Main beam `tell-tale` not working |1.7.4c|3
Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|3
Front passenger door cannot be opened from outside the vehicle |6.2.B.1b|3
Offside Front Driver`s seat cannot be secured in the upright position. |6.2.A.2|3
Nearside Front Driver`s seat cannot be secured in the upright position. |6.2.A.2|3
Nearside Front Wheel bolt|s| missing |4.2.A.1e|3
Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|3
Parking brake lever has no reserve travel |3.1.6b|3
Rear brake application uneven3
Offside Rear Direction indicator not working |1.4.A.2c|3
Offside Rear Rear fog lamp not working |1.3.2b|2
Nearside Front wheel bearing rough when rotated |2.5.A.2|2
Nearside Rear Body or chassis has an unsatisfactory modification, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|2
Offside Rear Suspension component mounting prescribed area is excessively corroded outer sill |2.4.A.3|2
Offside Inner Track rod end ball joint has excessive play |2.2.B.1f|2
Nearside Steering pivot point has excessive play |2.2.B.1g|2
Offside Front Exhaust has a major leak of exhaust gases |7.1.2|2
Nearside Windscreen wiper blade missing |8.2.2|2
Offside Windscreen wiper blade missing |8.2.2|2
Offside Inner Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|2
Brake pedal creeps down while the pedal is held under pressure |3.3.B.1a|2
Front Passenger`s seat cannot be secured in the upright position. |6.2.A.2|2
Offside Front Sub-frame rubber bush deteriorated resulting in excessive movement |2.4.G.2|2
Nearside Windscreen wiper not operating automatically when switched on |8.2.1b|2
Offside Windscreen wiper not operating automatically when switched on |8.2.1b|2
Offside Front Front suspension ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2|2
Offside Front Brake hose excessively damaged |3.6.B.4d|2
Offside Rear Vehicle structure has excessive corrosion which adversely affects braking or steering |6.1.A.1|2
Nearside rear parking |secondary| brake grabbing severely |3.7.B.6b|2
Nearside Vehicle structure has excessive corrosion which adversely affects braking or steering |6.1.A.1|2
Offside Vehicle structure has excessive corrosion which adversely affects braking or steering |6.1.A.1|2
Nearside Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|2
Offside Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|2
Nearside Front Lower Seat belt anchorage prescribed area is excessively corroded |5.2.6|2
Offside Front Lower Seat belt anchorage prescribed area is excessively corroded |5.2.6|2
Nearside Rear Brake hose bulging under pressure |3.6.B.3|2
Headlamp aim not tested |1.8.A.1c|2
Nearside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f|2
Fuel system component insecure |7.2.1|2
Windscreen wiper not operating automatically when switched on |8.2.1b|2
Offside Headlamp aim beam image obviously incorrect |1.8.A.1b|2
Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f|2
Offside Rear Body has a sharp edge caused by corrosion |6.1.C.1|2
Nearside Windscreen wiper blade deteriorated |8.2.2|2
Offside Windscreen wiper blade deteriorated |8.2.2|2
Fuel cap/sealing device sealing washer deteriorated |7.2.4c|2
Offside Seat belt anchorage prescribed area is inadequately repaired |5.2.6|2
Offside Front Headlamp not in good working order adversely affecting beam image |1.2.4a|2
Brake pedal anti-slip provision worn smooth |3.3.A.1b|2
Nearside Rear Suspension component mounting prescribed area is inadequately repaired |2.4.A.3|2
Offside Rear Suspension component mounting prescribed area is inadequately repaired |2.4.A.3|2
Offside Rear Shock absorber has a serious fluid leak |2.7.3|2
Exhaust mounting missing |7.1.1b|2
Nearside Front Brake hose twisted |found during steering lock to lock check| |2.2.D.2b|2
Power steering pump drive system defective |2.3.6|2
Nearside Front Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|2
Nearside Front Inner Track rod end ball joint has excessive play |2.2.B.1f|2
Nearside Steering arm has relative movement at its fixings |2.2.B.1h|2
Offside Front Brake hose leaking |3.6.A.1|2
Hazard warning lamps inoperative |1.4.B.1b|2
Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a|2
Offside Headlamp aim beam image kick up to the offside |1.8|2
Exhaust has part of the system excessively deteriorated |7.1.1a|2
Service brake: efficiency below requirements |3.7.C.1a|2
Subframe mounting prescribed area is excessively corroded |2.4.A.3|2
Offside Rear Anti-roll bar attachment bracket/mounting corroded and its strength is seriously reduced |2.4.G.1|2
Offside Front Driver`s seat backrest cannot be secured in the upright position. |6.2.5 |b| |ii||2
Nearside rear brake recording little or no effort |3.7.B.5a|2
Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|2
Nearside Rear Shock absorber has a serious fluid leak |2.7.3|2
Power steering pump leaking from a failed component |2.3.3b|2
Offside Rear Brake hose leaking |3.6.A.1|2
Nearside Front Brake hose excessively damaged |3.6.B.4d|2
Offside Front Vehicle structure has excessive corrosion which adversely affects braking or steering |6.1.A.1|2
Nearside Front Seat belt retracting mechanism defective |5.2.5b|2
Nearside Rear wheel bearing has excessive play |2.6.2|2
Brake pedal anti-slip provision missing |3.3.A.1b|2
Electrical wiring insecure |1.9.2a|2
Nearside Front Shock absorber insecure |2.7.2b|2
Nearside Front Seat belt insecurely fixed to the seat |5.2.1a|2
Nearside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|2
Offside Rear Rear position lamp|s| not working |1.1.A.3b|2
Nearside Outer Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|2
Offside Rear front brake binding |3.7.B.1|2
Brake pedal creeps down when held under pressure |3.3.B.1a|2
Centre Exhaust has part of the system excessively deteriorated |7.1.1a|2
Offside Outer Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|2
Vehicle structure has excessive corrosion which adversely affects braking or steering |6.1.A.1|2
Offside Rear brake disc excessively pitted |3.5.1h|2
Nearside Rear front brake binding |3.7.B.1|2
Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|2
Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))2
Exhaust emissions hydrocarbon content excessive (8.2.1.2 (b))2
Nearside Passengers seat backrest cannot be secured in the upright position. (6.2.6 (a) (i))2
Offside Front Service brake excessively binding (1.2.1 (f))2
Nearside Front Service brake excessively binding (1.2.1 (f))2
Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i))2
Offside Stop lamp(s) not working (4.3.1 (a) (ii))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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