Vauxhall Omega common problems and MOT failures
What goes wrong on a used Vauxhall Omega, year by year: known faults from UK buying guides, the parts flagged at MOT more than on other cars (from 2,985 MOTs done during 2023–2025), and what to check before you buy one.
The 1998 Vauxhall Omega
Too few Vauxhall Omega cars first registered in 1998 had an MOT during 2025 for reliable MOT figures. There are no known faults on record for this year in the UK buying guides we use, so the rest of this page covers the Vauxhall Omega as a whole.
What to check on a 1998 car
- MOT history
Check the reg below: its MOT history shows what has been failed or advised, and whether the mileage adds up.
- Service history
Look for regular servicing and receipts for big jobs like a cambelt or clutch.
- Finance and write-offs
MOT records don’t show outstanding finance or insurance write-offs. A history check does.
- Test drive
Listen for knocks over bumps, check every warning light goes out, and make sure the gears and brakes feel right.
Other years
Most years have their own guide. The year is when the car was first registered (it’s on the logbook, or check the reg below).
What usually goes wrong with a Vauxhall Omega?
We haven’t found widely reported faults for the Vauxhall Omega in the UK buying guides we use yet. That doesn’t mean it has none, so check the car carefully and look at the MOT weak spots below.
Common Vauxhall Omega MOT failures to check
Parts flagged at MOT well above the usual rate for cars the same age, for each fuel on its own. From the DVSA’s results for every MOT done in Great Britain during 2023–2025.
Petrol
Rust around sub-frame mountings
up to 4.8× usualStands out on cars registered in 2002 and 2003.
Rough price £300–£1,000 our estimateAt the viewing: Look underneath at the frame the suspension bolts to. Flaky rust or holes are expensive to fix.
Rust around suspension or steering mountings
up to 1.8× usualStands out on cars registered in 2003.
Rough price £100–£450 our estimateAt the viewing: On a straight road the steering wheel should sit straight. Listen for knocks when turning, and check the steering feels even.
Vauxhall Omega MOT pass rate by year
Older cars fail more, so compare each year with all cars registered the same year.
Questions to ask the seller before buying a Vauxhall Omega
Ask before you travel to see it. A seller who knows the car will have answers, and receipts.
- Any recent work on the rust around sub-frame mountings? (Flagged at MOT 4.6× as often on the Vauxhall Omega as on other cars the same age.)
- 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, whether it already shows these weak spots and what to ask the seller. Free, no sign-up.
Where this comes from: MOT figures are the DVSA’s anonymised results for every MOT test done in Great Britain during 2023–2025, grouped by the year each car was first registered. How many are on the road is from the Department for Transport’s vehicle licensing statistics. Known faults are from UK buying guides, in our own words, with links. How we score