1991 Land Rover Defender diesel: common problems and MOT failures

What goes wrong more than usual on a 1991 Land Rover Defender diesel?

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

• Seat belts5.6× usual
  Land Rover Defender

  11.7% All 1991 cars

  2.1%

  Failed outright at MOT: 1.3%, against 0.6% of all 1991 cars. The rest were advisories or minor defects.

  Rough price £80–£250 our estimate

  At the viewing: Pull each seatbelt sharply. It should lock and retract smoothly.

• Transmission oil leaks3.8× usual
  Land Rover Defender

  9.4% All 1991 cars

  2.5%

  Failed outright at MOT: 0.3%, against 0.1% of all 1991 cars. The rest were advisories or minor defects.

  Rough price £80–£600 our estimate

  At the viewing: Look under the engine and where the car is usually parked for fresh oil. Ask whether the leak has been looked at.

• Steering box6.1× usual
  Land Rover Defender

  7.9% All 1991 cars

  1.3%

  Failed outright at MOT: 1.4%, against 0.2% 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.

• Chassis rust or damage2.4× usual
  Land Rover Defender

  10.4% All 1991 cars

  4.3%

  Failed outright at MOT: 4.3%, against 1.6% of all 1991 cars. The rest were advisories or minor defects.

  Rough price £150–£1,000 our estimate

  At the viewing: Check the sills, wheel arches and underneath for rust, and look along the panels for uneven gaps or paint.

• Wheel bearings1.6× usual
  Land Rover Defender

  14.2% All 1991 cars

  8.7%

  Failed outright at MOT: 2%, against 1.3% of all 1991 cars. The rest were advisories or minor defects.

  Rough price £120–£300 (one bearing) ClickMechanic

  At the viewing: Listen for a hum or growl that changes as you steer at speed.

Common 1991 Land Rover Defender diesel MOT failures and advisories

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

• Lights and electrics
  39% 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
  35% 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.

• Oil and fluid leaks
  28% 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
  25% 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.

• Steering
  16% of testsRough price £100–£450

  At the viewing: On a straight road the steering wheel should sit straight. Feel for play or knocking when turning.

• Rust and bodywork
  14% of testsRough price £150–£1,000

  At the viewing: Check the sills, wheel arches and underneath for rust, and look along the panels for uneven gaps or paint.

Questions to ask the seller before buying a 1991 Land Rover Defender diesel

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

1. Any recent work on the seat belts? (Flagged at MOT 5.6× as often on the 1991 Land Rover Defender diesel as on other cars the same age.)
2. Any recent work on the transmission oil leaks? (Flagged at MOT 3.8× as often on the 1991 Land Rover Defender diesel as on other cars the same age.)
3. Any recent work on the steering box? (Flagged at MOT 6.1× as often on the 1991 Land Rover Defender diesel as on other cars the same age.)
4. Can I see the service history and receipts for any big jobs?