Used Car Red Flags

Mileage decreases in MOT history

This is almost certainly clocking. Non-negotiable — walk away immediately.

Gap of 2+ years in MOT testing

The car was SORN, off-road, or concealed. May mean accident damage, prolonged unroadworthiness, or being used illegally.

Same critical advisory across 3+ consecutive tests

Brake, tyre, or suspension issues flagged and repeatedly ignored indicate a seller who doesn't spend money on maintenance.

5+ test failures in the car's history

Chronic failures suggest deep maintenance problems. Investigate every failure category before proceeding.

Cat S or Cat N revealed on HPI check — not disclosed by seller

Failure to disclose write-off status is fraud. Walk away and report if appropriate.

Refuses to provide registration before viewing

No legitimate reason exists. If they won't share a public registration, assume they're hiding the history.

Pushes for a same-day decision

'I've got three people coming to look at it today' is a high-pressure tactic. Good cars don't disappear in an hour.

Can't answer basic questions about the car's history

A seller who can't say when the last service was, or dismisses all questions with 'it's fine', lacks knowledge or transparency.

Asks to meet somewhere other than the registered address

V5C shows the keeper's address. A seller unwilling to be traced is a concern.

Private seller but has multiple cars for sale

This is an unlicensed trader operating as a private individual. They have far fewer legal obligations than a registered dealer.

Price significantly below market value

If a car is 25%+ below comparable examples with no apparent justification, ask why. Common reasons: hidden defects, stolen, clocked, or finance outstanding.

'Quick sale' pricing without explanation

Urgency to sell cheaply is sometimes innocent (divorce, emigration) but always warrants investigation.

Price has dropped dramatically in the listing history

A car listed at £12k, then £9k, then £7k in 3 months has failed to sell for a reason. Find out why.

Mismatched paint panels or uneven panel gaps

Evidence of accident repair. Some repairs are fine; undisclosed ones and poor quality repairs are not.

Overspray on rubber window seals

Paint on seals indicates respraying — often after accident damage. Also check hinges for masking tape residue.

Interior wear inconsistent with claimed mileage

Heavy pedal, steering wheel, and seat bolster wear on a 'low mileage' car is a strong physical clocking indicator.

Engine bay suspiciously spotless on a high-mileage older car

An older engine bay that's been steam-cleaned may be hiding oil leaks. Check underneath and around seals.

Strong air freshener smell inside

Odour masking sometimes conceals water damage, mould, or persistent oil smell from mechanical issues.

V5C shows different colour from the car

Either resprayed without updating DVLA, or a plate swap. Both require investigation.

VIN on V5C doesn't match any VIN on the car

This suggests a 'cut-and-shut' (two cars welded together) or plate fraud. Walk away and contact police.

V5C is a duplicate (red 'duplicate' stamp on document)

Original V5Cs are replaced for various reasons — but a duplicate combined with other concerns warrants caution.

Previous keeper count doesn't match seller's story

If the seller claims first ownership but V5C shows 4 previous keepers, the story doesn't add up.