Ten red flags that mean walk away (not 'negotiate')

Most defects we find can be priced and repaired. A handful cannot — they signal a car that will cost you more than it's worth, or that's been hiding something serious. These ten findings stop our buyers cold.

1. Structural rust on chassis rails or sills

Surface rust is cosmetic. Structural rust on chassis rails, A/B pillars or sills compromises crash protection and is rarely cheaper to fix than the car is worth. Look for bubbling paint along door bottoms and inside wheel arches.

2. VIN doesn't match the compliance plate

Cars are stolen, re-stamped and sold every week in NSW. The VIN on the dash, the compliance plate, the engine bay sticker and the rego papers must all match. If any one is different — walk and report it.

3. Evidence the airbags have been deployed and replaced badly

We pull airbag fault codes on every inspection. If they've been cleared but the SRS module shows a deployment crash event, the car has been in a serious accident and the airbags may not deploy again. Walk.

4. PPSR shows finance owing or write-off history

Repairable write-offs are legal to sell in NSW but you must be told. Finance owing means the bank can repossess your car. Both are walk-aways unless you're negotiating a discount of 30%+ and you understand the resale ceiling.

5. Odometer wind-back evidence

We cross-check service-book kilometres, ECU kilometre logs and any digital service records. A 90,000km car with 140,000km of wear is a clear wind-back — usually accompanied by other deceptions. Walk and report to NSW Fair Trading.

6. Major transmission noise or harsh shifting on the road test

A gearbox is a $4,000-$8,000 repair and many won't survive long enough for that to be worth it. Hard shifts in a DCT, slipping in an automatic, or whine in a manual = walk.

7. White, blue or oily smoke from the exhaust on warm-up

Blue smoke = oil burning, white sweet-smelling smoke = coolant in cylinders, oily exhaust tip = turbo or piston-ring wear. All three are major-engine territory.

8. EV battery state of health below 75% relative to age

A 3-year-old EV with 75% SOH has had a hard life or a manufacturing fault. Either way, range is permanently reduced and resale is brutal. Walk unless the price reflects a $15k+ battery risk.

9. Outstanding manufacturer recall the seller hasn't actioned

Recalls are free fixes the seller could have done in 30 minutes. Refusal to action one — especially safety recalls like Takata airbags, Hyundai/Kia engine recalls or Tesla seatbelt — tells you everything about the seller.

10. Seller pressure to skip the inspection

'Another buyer is coming this arvo' and 'cash today and I'll knock $500 off but no inspection' are the two oldest tricks in the book. Every legitimate seller in NSW will wait 24-48 hours for a PPI. If they won't, the car has something to hide.

Common questions

What's the difference between a repairable write-off and a statutory write-off?

Statutory write-offs cannot be re-registered in NSW (since 2011). Repairable write-offs can, but only after passing a Vehicle Identity Inspection and full Pink Slip. Both should appear on the PPSR report — always check.

Can structural rust ever be repaired?

Technically yes, by certified panel shops. Practically it costs $3-8k and ruins resale. Only worth it for irreplaceable classics.