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MOT History from tests of petrol MERCEDES BENZ 420SLs year 1979

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

mot history
Pass percent:72.73%
(The average a petrol MERCEDES BENZ 420SL year 1979 passes without issue)
Based on:33 MOT Tests
Most common failuresNo# failures
Headlamp aim out of alignment3
Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|2
Brake hose excessively deteriorated2
Nearside Front Battery insecure |1.9.1|1
Nearside Rear Stop lamp not working |1.2.1b|1
Steering system has excessive free play detected at the steering wheel |steering box fitted| |2.2.A.1a|1
Nearside Rear Braking system leaking brake hose |3.6.A.1|1
Exhaust emissions carbon monoxide content excessive |7.3.B.1a|1
Offside Seat belt anchorage prescribed area is excessively corroded |5.2.6|1
Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|1
Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|1
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|1
Nearside Front wheel bearing rough when rotated |2.5.A.2|1
Offside Front wheel bearing rough when rotated |2.5.A.2|1
Nearside Front Front position lamp|s| not working |1.1.A.3b|1
Offside Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|1
Nearside Front Direction indicator not working |1.4.A.2c|1
Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4|1
Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3|1
Rear Exhaust system not adequately supported |7.1.1|1
Nearside Front Side repeater not working |1.4.A.2c|1
Offside Front Side repeater not working |1.4.A.2c|1
Offside Front coil spring fractured |2.4.C.1a|1
Nearside Front Direction indicators not working |1.4.A.2c|1
Offside Front Direction indicators not working |1.4.A.2c|1
Registration plate lamp issues1

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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