Pre-purchase car inspections in NZ: what they check

Updated 4 Oct 2026

A pre-purchase inspection is an independent check of a car's mechanical and physical condition before you buy it. It's the best way to find expensive problems while you can still walk away or negotiate. NZTA and Consumer Protection both recommend one, and it matters most when you buy privately. Here's what to expect and how to get the most from it.

Why a WoF isn't enough

A warrant of fitness is a safety check on the day of the inspection. NZTA is clear that it isn't a pre-purchase inspection. A WoF doesn't check:

the engine, clutch, gearbox or differential
lubricants
how much life the brake pads have left
paint, or rust outside structural areas.

So a car with a brand-new WoF can still need an expensive repair next month. From 1 November 2026, many cars will also go longer between WoF inspections; see our guide to WoF, CoF and rego.

What an inspection usually covers

Inspections vary between providers, so ask what's included before you book. A typical pre-purchase inspection looks at:

the engine, transmission, cooling system and fluid leaks
brakes, steering, suspension and tyres
the body and underside, including rust and signs of accident repair
electrical systems, lights and warning lights
a road test.

Some providers also include a history check or a written report with photos. For an EV or hybrid, ask whether they check the battery and hybrid system. Consumer Protection suggests using a mechanic experienced with that type of vehicle for electric or less common makes, such as European cars.

Prices vary with the provider and the depth of the inspection. Get a quote, and compare that cost with what a hidden fault could cost you.

Who does inspections

NZTA's tips for buying a used car say to always insist on a full professional inspection, and that many garages and specialist services do them. Options include:

a mechanic or garage you trust
a specialist pre-purchase inspection service, some of which come to the car
a specialist in the make, or an EV specialist.

Choose someone independent of the seller. Consumer Protection notes that some dealers will arrange an inspection with their preferred mechanic, but getting your own can give you a more independent report.

Arranging an inspection

Ask the seller early, before you agree a price. Explain that you'd like an inspection and ask whether they'll take the car to an inspector or let a mobile inspector come to them.

A genuine seller should agree. If a private seller refuses an independent inspection, treat it as a warning sign and be ready to walk away. Consumer Protection says an inspection is even more important in a private sale, because you have fewer rights if something goes wrong afterwards.

If you're buying from a dealer, you have more protection under the Consumer Guarantees Act, but an inspection is still worth it. It can save an argument later.

Checks you can do yourself first

An inspection costs money, so do some basic checks first to rule out obvious problems. Consumer Protection's checklist includes:

Tyres: at least the legal minimum tread depth of 1.5mm, with over 3mm recommended, and no cracks.
Body: look along the sides for dents or ripples, check the panel gaps are even, and look for paint that doesn't match.
Under the bonnet: look for leaks, frayed belts and creamy residue under the oil cap.
Start-up: watch for warning lights that stay on, and blue or black smoke from the exhaust in the first few seconds.
Wear: badly worn pedals or a worn driver's seat on a low-kilometre car can mean the odometer has been tampered with.
Test drive: the brakes should feel firm, the car shouldn't pull to one side, and gear changes should be smooth.

Ask the seller about service history, a second key and, if the car has one, when the cambelt was last changed. Check the car is insured before you take it for a test drive. NZTA suggests viewing on a dry day, when problems are easier to spot.

Then run the history checks in our guide to checking a car's history: money owing, stolen status, damage and odometer readings.

Using the report

When you get the report, read it with the inspector if you can, and ask which items are urgent, which are normal wear and which are just advice. Then you can:

Buy if it's clean or the issues are minor.
Negotiate the price down to cover repairs, using quotes if you can get them.
Ask the seller to fix problems before the sale, and check the work was done.
Walk away from serious problems, such as major rust, accident damage or engine and transmission faults.

Keep the report. If a private seller made false statements about the car, Consumer Protection says a mechanic's report is useful evidence.

Frequently asked questions

Is a pre-purchase inspection worth it for a cheap car?

Usually, yes. A fault in the engine or gearbox can cost more than a cheap car is worth, and an inspection costs far less than most major repairs.

Can I rely on a recent WoF instead?

No. A WoF doesn't check the engine, gearbox, clutch or brake pad life. NZTA says it isn't a pre-purchase inspection.

What if the seller won't allow an inspection?

Be very cautious. Buying privately gives you few legal remedies, and a refusal often means the seller knows about a problem.

Should I get an inspection when buying from a dealer?

It's still a good idea. You have more rights with a dealer, but finding a fault before you buy is easier than sorting it out afterwards.

On Cruizy

Browse cars for sale and ask the seller about an inspection through Cruizy messages. Our safety centre covers the scams to watch for. If you're selling, list your car; check our fees for the current price first.

This guide is general information, not legal or financial advice. Rules and fees change, so check the official sources linked here before you rely on them.