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MOT History from tests of petrol MERCEDES BENZ 420s year 1975

Review the list of common MERCEDES BENZ 420 failures below or to perform a specific mot history check on your MERCEDES BENZ then use our popular KnowYourCar service

mot history
Pass percent:65.79%
(The average a petrol MERCEDES BENZ 420 year 1975 passes without issue)
Based on:38 MOT Tests
Most common failuresNo# failures
Headlamp aim out of alignment4
Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|3
Offside Stop lamp not working |1.2.1b|2
Registration plate lamp issues2
Windscreen wiper does not clear the windscreen effectively2
Brake pedal creeps down when held under pressure |3.3.B.1a|1
Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b|1
Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b|1
Exhaust emits excessive dense blue smoke during acceleration |7.3.A.2c|1
Offside Windscreen has a sticker or other obstruction encroaching by more than 10mm within zone `A` |8.3.1b|1
Front Windscreen wiper not operating automatically when switched on |8.2.1b|1
Anti-lock braking system warning lamp does not illuminate |3.4.1b|1
Nearside Front Upper Suspension arm ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2|1
Nearside Stop lamp not working |1.2.1b|1
Nearside Rear Direction indicator incomplete |1.5.A1b|1
Offside Rear Direction indicator incomplete |1.5.A1b|1
Nearside Side repeater not working |1.4.A.2c|1
Rear Exhaust system not adequately supported |7.1.1|1
Direction indicators not working |1.4.A.2c|1
Offside Rear Direction indicators incorrect colour |1.4.A.2f|1
Offside Outer Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|1
Nearside Outer Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|1
Nearside Front Direction indicators not in good working order |function impaired| |1.5.A1b|1
Nearside Rear Direction indicators not in good working order |function impaired| |1.5.A1b|1
Offside Front Direction indicators not in good working order |function impaired| |1.5.A1b|1
Offside Rear Direction indicators not in good working order |function impaired| |1.5.A1b|1
Nearside Seat belt damaged sufficient to obstruct correct operation of the belt |5.2.2a|1
Offside Seat belt damaged sufficient to obstruct correct operation of the belt |5.2.2a|1
Nearside Front Seat belt has a cut which has significantly weakened the webbing |5.2.2a|1
Offside Front Seat belt has a cut which has significantly weakened the webbing |5.2.2a|1
Steering system has excessive free play detected at the steering wheel |steering box fitted| |2.2.A.1a|1
Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|1
Nearside Front Sub-frame rubber bush deteriorated resulting in excessive movement |2.4.G.2|1
Offside Front Sub-frame rubber bush deteriorated resulting in excessive movement |2.4.G.2|1
Parking brake lever defective so that it cannot be satisfactorily operated |3.1.3c|1
Parking brake: efficiency below requirements |3.7.C.1b|1
Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|1
Rear Exhaust has a major leak of exhaust gases |7.1.2|1
Offside Front Front wheel bearing has excessive play |2.5.A.3c|1
Offside Front position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f|1
Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|1
Offside Headlamp not working on dipped beam |1.7.5a|1
Nearside Headlamp not working on main beam |1.7.5a|1
Indicator switch faulty |1.4.A.1|1
Offside Direction indicator adversely affected by the operation of another lamp |1.4.A.2h|1
Nearside Seat belt insecurely fixed to the seat |5.2.1a|1
Offside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Nearside Inner Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Offside Outer Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Front passenger door cannot be opened from inside the vehicle |6.2.B.1b|1
Exhaust emissions hydrocarbon content excessive |7.3.B.1b|1
Registration plate issues1
Offside Headlamp aim not tested |1.8.A.1c|1
Nearside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Exhaust emissions carbon monoxide content excessive |7.3.B.1a|1
Nearside Rear Direction indicator not working |1.4.A.2c|1
Offside Rear Vehicle structure has excessive corrosion which adversely affects braking or steering |6.1.A.1|1
Nearside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Offside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|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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