Used car guide

1991 Rover Mini: common problems and what to check

What gets flagged at MOT on 1991 Rover Minis, from 931 tests in 2025, plus known faults and what to look at before you buy one.

931MOT tests in 2025
70%pass first time (all 1991 cars: 71%)
1,600typical miles a year
4.3×the usual rate for exhaust emissions

What stands out

Parts flagged at MOT more often on 1991 Rover Minis than on all cars registered in 1991.

  • Exhaust emissions4.3× usual
    Rover Mini
    9% All 1991 cars
    2.1%

    Failed outright at MOT: 8.9%, against 2% of all 1991 cars. The rest were advisories or minor defects.

    Rough price £175–£900 (catalytic converter) ClickMechanic

    At the viewing: Look for smoke when revving the warm engine and for engine or DPF warning lights.

  • Ball joint3.4× usual
    Rover Mini
    8.4% All 1991 cars
    2.5%

    Failed outright at MOT: 1.9%, against 0.8% of all 1991 cars. The rest were advisories or minor defects.

    Rough price £60–£150 (one joint) ClickMechanic

    At the viewing: Listen for knocking over bumps and check the rubber boots behind the wheels aren't split.

  • Sub-frame2.8× usual
    Rover Mini
    4.5% All 1991 cars
    1.6%

    Failed outright at MOT: 1.1%, against 0.1% of all 1991 cars. The rest were advisories or minor defects.

    Rough price £300–£1,000 our estimate

    At the viewing: Look underneath at the frame the suspension bolts to. Flaky rust or holes are expensive to fix.

  • Steering rack2× usual
    Rover Mini
    4.8% All 1991 cars
    2.4%

    Failed outright at MOT: 2.3%, against 1.3% of all 1991 cars. The rest were advisories or minor defects.

    Rough price £100–£450 our estimate

    At the viewing: On a straight road the steering wheel should sit straight. Listen for knocks when turning, and check the steering feels even.

Better than most

Rigid brake pipes: 3.4% here, against 10.9% of all 1991 cars.

By area

The share of 1991 Rover Mini MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Lights and electrics
    26% of testsRough price £10–£80

    At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.

  • Suspension
    26% of testsRough price £120–£400

    At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.

  • Exhaust and emissions
    16% of testsRough price £100–£1,200

    At the viewing: Look for black soot in the tailpipe, listen for blowing from the exhaust and check for engine or DPF warning lights.

  • Oil and fluid leaks
    15% of testsRough price £80–£600

    At the viewing: Look under the engine and on the ground where the car is usually parked for fresh oil or fluid.

  • Brakes
    14% of testsRough price £150–£350

    At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.

  • Tyres
    9% of testsRough price £70–£150

    At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.

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Other years

YearMOT testsMost flagged
2001360Suspension 22%
20001,151Suspension 22%
1999774Suspension 24%
1998836Suspension 26%
1997657Suspension 24%
1996771Suspension 32%
1995766Suspension 25%
1994879Suspension 24%
1993891Suspension 24%
1992779Lights and electrics 25%
1990951Lights and electrics 24%

Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 1991 Rover Minis registered in 1991. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score