1991 Rover Mini: common problems and MOT failures

What goes wrong more than usual on a 1991 Rover Mini?

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

• Exhaust emissions3.9× usual
  Rover Mini

  9% All 1991 cars

  2.3%

  Failed outright at MOT: 9%, against 2.2% 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: 2%, 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

  3.7% All 1991 cars

  1.3%

  Failed outright at MOT: 0.8%, 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.

• Rust around sub-frame mountings4.1× usual
  Rover Mini

  2.9% All 1991 cars

  0.7%

  Failed outright at MOT: 1.6%, against 0.3% 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 rack1.9× usual
  Rover Mini

  4.5% All 1991 cars

  2.4%

  Failed outright at MOT: 2.6%, 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.

Common 1991 Rover Mini MOT failures and advisories

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.

• Suspension
  25% 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.

• Lights and electrics
  24% of testsRough price £10–£80

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

• Brakes
  16% 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.

• 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.

• Tyres
  10% 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.

Questions to ask the seller before buying a 1991 Rover Mini

Ask before you travel to see it. A seller who knows the car will have answers, and receipts.

1. Any recent work on the exhaust emissions? (Flagged at MOT 3.9× as often on the 1991 Rover Mini as on other cars the same age.)
2. Any recent work on the ball joint? (Flagged at MOT 3.4× as often on the 1991 Rover Mini as on other cars the same age.)
3. Any recent work on the sub-frame? (Flagged at MOT 2.8× as often on the 1991 Rover Mini as on other cars the same age.)
4. Can I see the service history and receipts for any big jobs?