Used car guide

2003 Vauxhall Omega petrol: common problems and MOT failures

What MOT testers find on the petrol Vauxhall Omega first registered in 2003 (petrol cars only): we looked at the 939 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

939MOTs of 2003 petrol cars, done in 2023–2025
67%pass first time (all 2003 cars: 57%)
4,400typical miles a year
1.8×the usual rate for rust around suspension or steering mountings

What goes wrong more than usual on a 2003 Vauxhall Omega petrol?

Parts flagged at MOT more often on the 2003 Vauxhall Omega petrol than on all cars registered in 2003.

  • Rust around suspension or steering mountings1.8× usual
    Vauxhall Omega
    11.2% All 2003 cars
    6.2%

    Failed outright at MOT: 6.5%, against 3.1% of all 2003 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.

  • Rust around sub-frame mountings4.2× usual
    Vauxhall Omega
    5% All 2003 cars
    1.2%

    Failed outright at MOT: 2%, against 0.3% of all 2003 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.

Better than most

Braking performance: 3% here, against 7.4% of all 2003 cars. Number plate lights: 3.5% here, against 7.8% of all 2003 cars.

Common 2003 Vauxhall Omega petrol MOT failures and advisories

The share of 2003 Vauxhall Omega petrol MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Suspension
    40% 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
    40% 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
    30% 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.

  • Lights and electrics
    27% of testsRough price £10–£80

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

  • Oil and fluid leaks
    22% 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.

  • Exhaust and emissions
    15% 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.

Questions to ask the seller before buying a 2003 Vauxhall Omega 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 rust around suspension or steering mountings? (Flagged at MOT 1.8× as often on the 2003 Vauxhall Omega petrol as on other cars the same age.)
  2. Any recent work on the rust around sub-frame mountings? (Flagged at MOT 4.2× as often on the 2003 Vauxhall Omega petrol as on other cars the same age.)
  3. Can I see the service history and receipts for any big jobs?

Looking at a Vauxhall Omega?

Check the actual car: its own MOT history, mileage and what to ask the seller. Free, no sign-up.

Other years

Every year of the Vauxhall Omega compared

YearMOT testsMost flagged
2004–Too few tests
2002793Brakes 45%
2001680Brakes 42%
2000348Brakes 38%
1999167Suspension 37%
1998–Too few tests
1997–Too few tests
1996–Too few tests
1995–Too few tests
1994–Too few tests

Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of Vauxhall Omega cars first registered in 2003. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score