65.6%
MG ZR pass rate
Used MG ZR buying guide
In 2025, MG ZR cars passed 65.6% of 1,721 initial MOT tests, 6.7 points below the 72.3% UK average. Here is where it fails and what to check before you buy.
Looking at a specific ZR? Check its finance, write-off, stolen, mileage and keeper history. £15, no account needed.
MG ZR MOT record in brief
Initial MOT tests in 2025, retests excluded.
72.3%
UK average, all cars
−6.7
percentage points below average
Ranked on pass rate the ZR sits 421st of 575 models in the data. MG as a brand averaged 80.9%, so this model runs 15.3 points behind its own brand.
A pass rate is not a reliability score. The full MG ZR MOT record has the pass rate by age, every common failure and how the ZR compares with similar cars.
ZR fuel types
Petrol was the most common fuel among MG ZR cars tested in 2025. Diesel made up just 8.1% of tests.
Where the ZR fails its MOT
Where MG ZR cars that failed their 2025 MOT were marked down, as a share of all recorded failure items.
The specific items testers recorded most often were component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength (6%), joints constant velocity boot split or insecure, no longer prevents the ingress of dirt (5.6%) and position lamp not working (3.7%). See every common ZR MOT failure.
These are DVSA failure records across every MG ZR that failed, not a claim that every ZR has these problems.
What should you check when buying a used ZR?
The areas above, most common first, and what an MOT tester looks at in each.
1
Lamps, reflectors and electrical equipment
Walk round with every light on: headlights, brake lights, indicators, fog lights and the number plate lamp. Check no warning lights stay on after starting. 28.2% of ZR failure items.
2
Brakes
Make sure the pedal feels firm, the car stops in a straight line, the handbrake holds on a slope and no brake warning light is showing. 15.5% of ZR failure items.
3
Body, chassis, structure
Look underneath and along the sills for corrosion, and check for damaged or poorly repaired panels. 13.8% of ZR failure items.
4
Noise, emissions and leaks
Listen for a blowing exhaust, watch for smoke on start-up and look under the car for oil or fluid leaks. 11.2% of ZR failure items.
5
Suspension
Listen for knocks over bumps, check the car sits level, and look for leaking shock absorbers and split rubber gaiters. 10.5% of ZR failure items.
None of this replaces the car's own record. Run a free MOT history check on the registration to see every test, advisory and recorded mileage for that car.
What the MOT record doesn't tell you
Knowing MG ZR failures cluster around lamps, reflectors and electrical equipment and brakes tells you what to inspect. It tells you nothing about whether the car is safe to buy. An MOT does not show money still owed on the car, a write-off, a theft record or a clocked odometer.
Check the exact ZR you are looking at. One £15 report, instant results, backed by a £30,000 data guarantee. More on the MG history check.
- Outstanding finance
- Write-off records
- Stolen markers
- Mileage history
- Previous keepers
Other used MG models
The most-tested MG models in 2025, with how their MOT pass rate compares with the ZR.
Used MG ZR FAQs
Is the MG ZR reliable?
MOT data does not measure reliability. It records whether a car met the roadworthiness standard on the day of its test. What it does show is a 65.6% first-time pass rate for the MG ZR across 1,721 tests in 2025, below the 72.3% average for all cars.
What should I check before buying a used MG ZR?
On the car itself, start with the areas it most often fails on: lamps, reflectors and electrical equipment, brakes and body, chassis, structure. Then check the individual car's history: outstanding finance, insurance write-off records, stolen markers, mileage and previous keepers. None of these appear in the MOT record or on the V5C.
How do I check a MG ZR's history?
Enter the registration of the specific car. A Carpeep car history check reports outstanding finance, write-off category, stolen markers, mileage history, previous keepers, MOT and tax status, import and export markers and scrapped status in one £15 report.
MOT figures are aggregated from the DVSA MOT Anonymised data set for 2025 (class 4 initial tests, retests excluded), licensed under the Open Government Licence v3.0. MOT results describe roadworthiness at test, not mechanical reliability.