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MOT History from tests of petrol CHEVROLET GMC CORVETTEs year 1979

Review the list of common CHEVROLET GMC CORVETTE failures below or to perform a specific mot history check on your CHEVROLET GMC then use our popular KnowYourCar service

mot history
Pass percent:76.85%
(The average a petrol CHEVROLET GMC CORVETTE year 1979 passes without issue)
Based on:635 MOT Tests
Most common failuresNo# failures
Parking brake: efficiency below requirements |3.7.B.7|43
Headlamp aim out of alignment29
Rear parking brake recording little or no effort27
Parking brake lever has no reserve travel |3.1.6b|22
Horn not working |1.6.2a|18
Windscreen wiper does not clear the windscreen effectively14
Brake pipe excessively corroded13
Parking brake: efficiency below requirements |3.7.C.1b|12
Registration plate lamp issues10
Offside Headlamp not working on dipped beam |1.7.5a|9
Nearside Stop lamp not working |1.2.1b|8
Service brake: efficiency below requirements |3.7.B.7|8
Exhaust emissions carbon monoxide content excessive |7.3.B.1a|7
Offside Stop lamp not working |1.2.1b|7
Registration plate issues7
Nearside Headlamp not working on dipped beam |1.7.5a|6
Brakes imbalanced across an axle5
Exhaust emissions hydrocarbon content excessive |7.3.B.1b|5
Offside Front Direction indicator not working |1.4.A.2c|5
Nearside Front position lamp|s| not working |1.1.A.3b|4
Exhaust has a major leak of exhaust gases |7.1.2|4
Nearside Headlamp not working on main beam |1.7.5a|4
Rear brake binding4
Offside Headlamp not working on main beam |1.7.5a|4
Offside Front position lamp|s| not working |1.1.A.3b|4
Nearside Front Direction indicator incorrect colour |1.4.A.2f|4
Brake hose excessively deteriorated4
Parking brake: efficiency below requirements |3.7.D.4|3
Nearside Rear Brake hose bulging under pressure |3.6.B.3|3
Front Exhaust has a major leak of exhaust gases |7.1.2|3
Nearside Front position lamp|s| incorrect colour |1.1.A.3e|3
Offside Front position lamp|s| incorrect colour |1.1.A.3e|3
Nearside Front Direction indicator not working |1.4.A.2c|3
Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii||3
Offside Front Direction indicator incorrect colour |1.4.A.2f|3
Hazard warning switch faulty |1.4.B.1d|3
Nearside Rear Direction indicator incorrect colour |1.4.A.2f|3
Offside Rear Direction indicator incorrect colour |1.4.A.2f|3
Front position lamp|s| not working |1.1.A.3b|2
Indicator switch faulty |1.4.A.1|2
Nearside Rear Stop lamp not working |1.2.1b|2
Nearside Front brake caliper leaking |3.6.A.1|2
Offside Rear Brake hose bulging under pressure |3.6.B.3|2
Parking brake efficiency below requirements |1.4.2 |a| |i||2
Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a|2
Brake pedal spongy |3.3.B.1b|2
Nearside Rear wheel bearing has excessive play |2.6.2|2
Nearside Rear Direction indicator not working |1.4.A.2c|2
Offside Front brake caliper leaking |3.6.A.1|2
Offside Front Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a|2
Nearside Front wheel bearing has excessive play |2.5.A.3c|2
Rear Mechanical brake component has restricted free movement2
Nearside Power steering ram|s| leaking from a failed seal |2.3.3b|2
Offside Rear wheel bearing has excessive play |2.6.2|2
Power steering inoperative |2.3.3a|2
Offside Indicator tell tale inoperative |1.4.A.2a|2
Front brake application uneven2
Power steering pipe|s| or hose|s| leaking from a joint |2.3.3b|2
Horn control missing |1.6.1|2
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|2
Windscreen wiper not operating automatically when switched on |8.2.1b|2
Nearside Front Front position lamp|s| not working |1.1.A.3b|2
Offside Direction indicator not working |1.4.A.2c|2
Offside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a|2
Nearside Power steering ram|s| leaking from a failed component |2.3.3b|2
Brake pedal creeps down while the pedal is held under pressure |3.3.B.1a|2
Power steering pipe|s| or hose|s| leaking |2.3.3b|2
Offside Side repeater not working |1.4.A.2c|1
Offside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f|1
Offside Rear Anti-roll bar attachment bracket/mounting insecure |2.4.G.1|1
Power steering pump leaking from a failed component |2.3.3b|1
Steering wheel retaining device insecure |2.1.6|1
Horn control insecure |1.6.1|1
Headlamps matched pair are incorrectly positioned |1.7.3|1
Nearside Rear position lamp|s| excessively damaged so that it is not visible from a reasonable distance |1.1.A.3d|1
Nearside Front Suspension spring mounting prescribed area is fractured |2.4.A.3|1
Nearside Front Lower Suspension component mounting prescribed area is fractured |2.4.A.3|1
Offside Front Lower Shock absorber insecure |2.7.2b|1
Nearside Front Upper Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2|1
Nearside Front position lamp|s| missing |1.1.A.3a|1
Offside Front position lamp|s| missing |1.1.A.3a|1
Nearside Indicator switch faulty |1.4.A.1|1
Nearside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Offside Front Headlamp not working on dipped beam |1.7.5a|1
Horn not working (7.7 (a))1
Parking brake efficiency below requirements (1.4.2 (a) (i))1
Speedometer cannot be illuminated. |6.7.3|1
Steering column flexible coupling is excessively deteriorated |2.2.2 |c||1
Offside Front Position lamp not working let hand drive vehicle |4.2.1 |a||1
Horn emits two or more alternating tones |1.6.2d|1
Direction indicators adversely affected by the operation of another lamp |1.4.A.2h|1
Offside Front front brake binding |3.7.B.1|1
Main beam `tell-tale` not working |1.7.4c|1
Nearside Headlamp does not operate immediately when selected on dipped beam doesn`t flip up when lights turned on |1.7.4a|1
Offside Headlamp does not operate immediately when selected on dipped beam doesn`t flip up when lights turned on |1.7.4a|1
Horn not loud enough to be heard by another road user |1.6.2b|1
Offside Headlamp not in good working order adversely affecting beam image |1.2.4a|1
Steering column flexible coupling is excessively deteriorated |2.1.5|1
Power steering component|s| leaking |2.3.3b|1
Steering column top mounting bracket insecure |2.1.2d|1
Nearside Rear Brake pipe kinked |3.6.B.2b|1
Nearside rear brake recording little or no effort |3.7.B.5a|1
Nearside Front Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a|1
Nearside Front Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a|1
Nearside Rear Torsion bar adjustment assembly inadequately locked |2.4.E.3|1
Brake performance not tested |3.7.A.1|1
Headlamp not in good working order |not working| |1.2.4a|1
Obligatory mirror insecure |8.1.1|1
Steering column shaft has excessive end float |2.1.3|1
Headlamp has a product on the light source so that the light output is severely reduced |1.7.5a|1
Offside Direction indicator flashing less than 60 times a minute |1.4.A.2g|1
Offside Front Track rod end loose |2.2.B.1d|1
Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c|1
Nearside Front Suspension arm ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2|1
Offside Rear Shock absorber insecure |2.7.2b|1
Steering column will not lock in a fixed position |adjustable type| |2.1.2a|1
Direction indicators incorrect colour |1.4.A.2f|1
Offside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2|1
Rear Brake pipe inadequately clipped |3.6.B.1|1
Nearside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2|1
Driver`s seat insecure |6.2.A.1|1
Offside Passenger`s seat insecure |6.2.A.1|1
Nearside Inner Front Suspension arm attachment bracket/mounting cracked |2.4.G.1|1
Nearside Inner Front Suspension arm attachment bracket/mounting fractured |2.4.G.1|1
Passenger`s seat insecure |6.2.A.1|1
Steering box has a significant oil leak |2.2.D.2e|1
Nearside Front Suspension component mounting prescribed area is fractured |2.4.A.3|1
Nearside Exhaust emissions carbon monoxide content excessive |7.3.B.1a|1
Offside Exhaust emissions hydrocarbon content excessive |7.3.B.1b|1
Offside Exhaust emissions carbon monoxide content excessive |7.3.B.1a|1
Offside Rear Wheel insecure |4.2.A.1c|1
Nearside Front suspension has a suspension lower ball joint securing nut loose |2.5.B.1a|1
Offside Front Position lamp not working |4.2.1 |a| |ii||1
Windscreen washer not working 1
Windscreen wiper not working |3.4 |a||1
Horn not working |7.7 |a| |ii||1
Brake lever has insufficient reserve travel |1.1.2 |a||1
Steering arm has relative movement at its fixings |2.2.B.1h|1
Position lamp switch missing |1.1.A.1|1
Offside Front Track rod end ball joint has excessive play |2.2.B.1f|1
Nearside Rear Tie bar/rod has excessive play in a ball joint |2.4.G.2|1
Offside Rear Tie bar/rod has excessive play in a ball joint |2.4.G.2|1
Brake cable has restricted free movement fowling on nearside rear seat bolt |3.5.1k|1
Front Windscreen wiper not operating automatically when switched on |8.2.1b|1
Offside Rear Direction indicator not working |1.4.A.2c|1
Nearside Rear Drive shaft uj which forms part of the suspension has a loose flange bolt |2.4.G.4c|1
Offside Rear Leaf spring anchor bracket loose |2.4.B.6a|1
Nearside Front Headlamp not in good working order |not working| |1.2.4a|1
Offside Front Headlamp not in good working order adversely affecting beam image |1.2.4a|1
Nearside Front Front position lamp|s| incorrect colour |1.1.A.3e|1
Offside Front Front position lamp|s| incorrect colour |1.1.A.3e|1
Nearside Front Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a|1
Offside Front Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a|1
Nearside Front Steering arm has relative movement at its fixings |2.2.B.1h|1
Rear Direction indicator incorrect colour |1.4.A.2f|1
Offside Front Upper Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2|1
Nearside Front Upper Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2|1
Nearside Front Lower Front suspension has excessive movement at a suspension ball joint |2.5.A.1c|1
Offside Front Lower Front suspension has excessive movement at a suspension ball joint |2.5.A.1c|1
Offside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2|1
Nearside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Offside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Steering column universal joint has excessive play |2.1.5|1
Nearside Suspension arm has excessive play in a pin/bush |2.4.G.2|1
Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2|1
Hazard warning lamps inoperative |1.4.B.1b|1
Nearside Front Hazard warning lamps inoperative |1.4.B.1b|1
Offside Front Hazard warning lamps inoperative |1.4.B.1b|1
Nearside Rear Track rod end ball joint dust cover missing |2.2.C.1c|1
Front Power steering pipe|s| or hose|s| leaking from a seal |2.3.3b|1
Nearside Front Power steering pipe|s| or hose|s| fouling other parts of the vehicle |2.3.2|1
Nearside Front Lower Ball joint has excessive play |2.2.B.1f|1
Offside Front Lower Ball joint has excessive play |2.2.B.1f|1
Offside Front Anti-roll bar linkage rubber bush deteriorated resulting in excessive movement |2.4.G.2|1
Nearside Indicator tell tale inoperative |1.4.A.2a|1
Nearside Rear Exhaust has a major leak of exhaust gases |7.1.2|1
Offside Rear Brake cable has wires broken and is significantly weakened |3.5.1b|1
Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|1
Rear Leaf spring anchor bracket loose |2.4.B.6a|1
Rear Leaf spring anchor bracket bolt missing |2.4.B.6c|1
Parking brake lever releases when knocked |3.1.6a|1
Direction indicators not working |1.4.A.2c|1
Centre Leaf spring to axle securing bolt insecure |2.4.B.7b|1
Nearside Rear Leaf spring anchor pin excessively loose in its bracket |2.4.B.3a|1
Offside Rear Leaf spring anchor pin excessively loose in its bracket |2.4.B.3a|1
Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f|1
Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f|1
Nearside Direction indicator flashing more than 120 times a minute |1.4.A.2g|1
Driver`s door cannot be opened from outside the vehicle |6.2.B.1b|1
Steering wheel locking device insecure |2.1.6|1
Driver`s seat cannot be secured in the upright position. |6.2.A.2|1
Front Passenger`s seat cannot be secured in the upright position. |6.2.A.2|1
Nearside Front Direction indicator adversely affected by the operation of another lamp |1.4.A.2h|1
Rear Direction indicators adversely affected by the operation of another lamp |1.4.A.2h|1
Steering component is not secure to the vehicle structure |2.2.B.1a|1
Drag link end damaged and unserviceable |2.2.C.1d|1
Offside Rear rear brake grabbing severely |3.7.A.5b|1
Brake hose damaged1
Nearside Inner Front brake disc excessively scored |3.5.1h|1
Nearside Rear Rear reflector missing |1.5.1a|1
Offside Rear Rear reflector missing |1.5.1a|1
Offside Front Braking system leaking |3.6.A.1|1
Offside Front brake disc contaminated by brake fluid |3.5.1h|1
Offside Headlamp aim beam image kick up to the offside |1.8|1
Nearside Rear reflector missing |1.5.1a|1
Offside Rear reflector missing |1.5.1a|1
Nearside Rear Direction indicators incorrect colour |1.4.A.2f|1
Offside Rear Direction indicators incorrect colour |1.4.A.2f|1
Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a|1
Nearside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2|1
Offside Outer Rear Brake pipe inadequately clipped |3.6.B.1|1
Nearside Direction indicator flashing less than 60 times a minute |1.4.A.2g|1
Nearside Stop lamp emits other than a steady red light |1.2.1e|1
Offside Stop lamp emits other than a steady red light |1.2.1e|1
Nearside Ball joint has excessive play |2.2.B.1f|1
Nearside Rear Braking system leaking |3.6.A.1|1
Nearside Front Brake hose excessively damaged |3.6.B.4d|1
Nearside Front Power steering ram|s| leaking from a failed component |2.3.3b|1
Offside Rear Braking system leaking |3.6.A.1|1
Nearside Front Headlamp not working on main beam |1.7.5a|1
Front Direction indicators incorrect colour |1.4.A.2f|1
Nearside Front Indicator tell tale inoperative |1.4.A.2a|1
Brake hose has insufficient room to move1
Nearside Rear Shock absorber has negligible damping effect |2.7.5|1
Offside Rear Shock absorber has negligible damping effect |2.7.5|1
Driver`s seat fore and aft adjustment mechanism not functioning as intended. |6.2.A.3|1
Nearside Front Track rod end ball joint has excessive play |2.2.B.1f|1
Offside Rear Rear wheel bearing has excessive play |2.6.2|1
Offside Front Shock absorber has a serious fluid leak |2.7.3|1
Parking brake lever has excessive movement indicating incorrect adjustment |1.1.6 |c||1
Exhaust emissions carbon monoxide content excessive |8.2.1.2 |b||1
Nearside Front Anti-roll bar linkage rubber mounting deteriorated resulting in excessive movement |2.4.G.2|1
Offside Front Anti-roll bar linkage rubber mounting deteriorated resulting in excessive movement |2.4.G.2|1
Nearside Ball joint damaged and unserviceable |2.2.C.1d|1
Offside Drive shaft uj which forms part of the suspension has excessive play in a universal joint |2.4.G.4b|1
Nearside Drive shaft uj which forms part of the suspension has excessive play in a universal joint |2.4.G.4b|1
Nearside front brake recording little or no effort |3.7.B.5a|1
Offside front brake recording little or no effort |3.7.B.5a|1
Brake pedal has insufficient reserve movement |3.3.A.5|1
Stop lamp not working |1.2.1b|1
Nearside Front Brake hose bulging under pressure |3.6.B.3|1
Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|1
Steering pivot point has excessive play |2.2.B.1g|1
Nearside Rear Leaf spring to axle securing bolt missing |2.4.B.7b|1
Nearside Front Lower Shock absorber has an excessively worn bush |2.7.4|1
Offside Front Lower Shock absorber has an excessively worn bush |2.7.4|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 Front An item not tested |Manual|1
Offside Front An item not tested |Manual|1
Nearside Rear An item not tested |Manual|1
Nearside Front Shock absorber insecure |2.7.2b|1
Nearside Rear Axle beam cracked Leaf spring link joint |2.5.A.5a|1
Nearside Track rod end ball joint has excessive play |2.2.B.1f|1
Offside Rear position lamp|s| not working |1.1.A.3b|1
Nearside Headlamp aim not tested |1.8.A.1c|1
Offside Headlamp aim not tested |1.8.A.1c|1
Centre Exhaust has a major leak of exhaust gases |7.1.2|1
Front Power steering pump leaking from a failed component |2.3.3b|1
Nearside rear brakes release unevenly |3.7.B.4|1
Nearside Front Seat belt damaged sufficient to obstruct correct operation of the belt |5.2.2a|1
Offside Front Intermediate drop arm insecure |2.2.B.1a|1
Nearside Front Steering component is not secure to the vehicle structure |2.2.B.1a|1
Offside Front Fuel pipe leaking |7.2.3|1
Offside Front Brake hose twisted |3.6.B.4c|1
Nearside Rear Rear wheel bearing has excessive play |2.6.2|1
Offside Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|1
Service brake is causing the vehicle to swerve to the offside (3.7.C.2)1
Brake master cylinder leaking hydraulic fluid (3.6.G.1f)1
Power steering component(s) leaking (2.3.3b)1
Nearside Front Brake hose bulging under pressure (3.6.B.3)1
Offside Front Brake hose bulging under pressure (3.6.B.3)1
Offside Rear Tie bar/rod rubber bush deteriorated resulting in excessive movement (2.4.G.2)1
Nearside Front Upper Front suspension has excessive movement at a wishbone pin or bush (2.5.A.1c)1
Offside Front Upper Front suspension has excessive movement at a wishbone pin or bush (2.5.A.1c)1
Offside Front Lower Front suspension has excessive movement at a wishbone pin or bush (2.5.A.1c)1
Offside Front suspension has excessive play in a lower suspension ball joint (2.5.B.1a)1
Nearside Front suspension has excessive play in a lower suspension ball joint (2.5.B.1a)1
Offside Rear Shock absorber has negligible damping effect (2.7.5)1
Exhaust has a major leak of exhaust gases (7.1.2)1
Nearside Rear Direction indicator excessively damaged so that it is not visible from a reasonable distance (1.4.A.2e)1
Offside Rear Direction indicator excessively damaged so that it is not visible from a reasonable distance (1.4.A.2e)1
Service brake: efficiency below requirements (3.7.C.1a)1
Parking brake: efficiency below requirements (3.7.C.1b)1
Central Rear Exhaust system not adequately supported |7.1.1|1
Centre Steering arm has relative movement at its fixings |2.2.B.1h|1
Offside Front 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 Anti-roll bar has excessive play in a pin/bush |2.4.G.2|1
Offside Front Anti-roll bar has excessive play in a pin/bush |2.4.G.2|1
Nearside Trailing arm has excessive play in a pin/bush |2.4.G.2|1
Offside Front Windscreen wiper blade deteriorated |8.2.2|1
Nearside Steering component mounting prescribed area is excessively corroded |2.2.C.1h|1
Offside Front Direction indicators not working |1.4.A.2c|1
Front Power steering malfunctioning |2.3.3a|1
Nearside Front Front wheel bearing has excessive play |2.5.A.3c|1
Offside Rear Leaf spring shackle bracket cracked |2.4.B.6b|1
Front Headlamp not working on dipped beam |1.7.5a|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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