2005 Vauxhall Signum petrol: common problems and MOT failures

What goes wrong more than usual on a 2005 Vauxhall Signum petrol?

Parts flagged at MOT more often on the 2005 Vauxhall Signum petrol than on all cars registered in 2005.

• Exhaust system2.5× usual
  Vauxhall Signum

  23.8% All 2005 cars

  9.4%

  Failed outright at MOT: 5.5%, against 2.6% of all 2005 cars. The rest were advisories or minor defects.

  Rough price £100–£500 (pipe or section) ClickMechanic

  At the viewing: Listen for blowing or rattling from underneath at idle, and look for black soot around joints.

• Steering rack inner joints3.8× usual
  Vauxhall Signum

  15% All 2005 cars

  3.9%

  Failed outright at MOT: 0%, against 0% of all 2005 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 2005 Vauxhall Signum petrol MOT failures and advisories

The share of 2005 Vauxhall Signum petrol MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

• Suspension
  46% 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.

• Brakes
  42% 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.

• Lights and electrics
  37% of testsRough price £10–£80

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

• Tyres
  33% 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.

• Exhaust and emissions
  27% 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 an engine warning light.

• Oil and fluid leaks
  18% 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.

Questions to ask the seller before buying a 2005 Vauxhall Signum petrol

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 system? (Flagged at MOT 2.5× as often on the 2005 Vauxhall Signum petrol as on other cars the same age.)
2. Any recent work on the steering rack inner joints? (Flagged at MOT 3.8× as often on the 2005 Vauxhall Signum petrol as on other cars the same age.)
3. Can I see the service history and receipts for any big jobs?