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MOT History from tests of petrol MG ZSs year 2021

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

mot history
Pass percent:91.10%
(The average a petrol MG ZS year 2021 passes without issue)
Based on:11,343 MOT Tests
Most common failuresNo# failures
Headlamp aim out of alignment186
Windscreen wiper does not clear the windscreen effectively88
Offside Rear Service brake excessively binding (1.2.1 (f))65
Nearside Rear Service brake excessively binding (1.2.1 (f))53
Parking brake efficiency below requirements (1.4.2 (a) (i))51
Rear brake disc in such a condition that it is seriously weakened42
Windscreen washer not working 28
Registration plate lamp issues23
Offside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i))19
Registration plate issues19
Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h))19
Brake pedal anti-slip provision missing (1.1.2 (c))16
Rear Brake disc significantly and obviously worn (1.1.14 (a) (i))16
Offside Rear Service brake excessively fluctuating (1.2.1 (e))16
Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i))15
Offside Rear Coil spring fractured or broken (5.3.1 (b) (i))13
Offside Front Service brake excessively fluctuating (1.2.1 (e))13
Nearside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i))13
Nearside Front Wheel bearing rough when rotated (5.1.3 (b) (i))13
Brakes imbalanced across an axle12
Anti-lock braking system warning lamp does not illuminate (1.6 (a))12
Nearside Rear Service brake excessively fluctuating (1.2.1 (e))11
Nearside Front Service brake excessively fluctuating (1.2.1 (e))10
Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i))8
Service brake efficiency below requirements (1.2.2 (a) (i))7
Offside Rear Shock absorbers has a serious fluid leak7
Nearside Rear Shock absorbers has a serious fluid leak7
Rear fog lamp not working (4.5.1 (a) (ii))7
Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i))7
Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i))7
Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i))7
Brake fluid significantly below minimum mark (1.1.10 (d) (ii))6
Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c))6
Oil leaking excessively from engine (8.4.1 (a) (i))6
Front brake disc in such a condition that it is seriously weakened6
Nearside Rear Seat belt buckle not functioning as intended (7.1.2 (d))6
Nearside Rear Inner Brake disc significantly and obviously worn (1.1.14 (a) (i))5
Rear Service brake excessively fluctuating (1.2.1 (e))5
Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i))5
Rear Inner Brake disc significantly and obviously worn (1.1.14 (a) (i))4
Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii))4
Supplementary restraint system warning lamp indicates a fault (7.1.6 (a))4
Central Rear Seat belt buckle not functioning as intended (7.1.2 (d))4
Reversing lamp inoperative (4.6.1 (a))4
Offside Front Daytime running lamp not working (4.2.1 (a) (ii))4
Offside Rear Wheel bearing has excessive play (5.1.3 (a) (i))4
Anti-lock braking system warning lamp indicates an ABS fault4
Electronic braking system warning device indicates a fault (1.7 (b))4
Nearside Front Road wheel fixing missing (5.2.1 (a) (i))4
Nearside Front Front fog lamp not working (4.5.1 (a) (ii))4

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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