Used cars can be a fulfilling purchase or an absolute headache, and the difference usually comes down to how much homework you do before handing over your money.
We sell thousands of used cars every year at Armstrong’s, and plenty of us have also helped friends and family navigate private sales, auctions and imports. So we’ve seen the good buys and the ones people wish they could say goodbye to.
This guide pulls from our used car expertise alongside advice from Consumer Protection, Waka Kotahi and a few other websites worth checking out.
Before you start scrolling through listings, it’s worth being honest with yourself about how you’ll use your next car. A small hatchback for commuting is a very different purchase from a family SUV or a work ute. If you’re not sure what suits your situation, the government’s RightCar website has independent ratings that can help you narrow things down.
Then there’s your budget, and budget doesn’t just mean the sticker price. You need to factor in fuel, insurance, maintenance, registration and road user charges (if you’re looking at a diesel or plug-in hybrid). Consumer Protection says the same thing on their website: running costs are just as important as the purchase price, and they’re the thing most people underestimate.
If you need to borrow money to buy a car, we’ve written a separate guide on car finance if you want to dig into that properly.
Licensed dealerships
It sounds biased coming from us, but buying from a licensed dealer comes with built-in protections. Dealers have to display a Consumer Information Notice (CIN) on every used vehicle, which covers the year, odometer reading, engine size, WoF expiry and any known damage. We also have to guarantee the car is free from security interests (money owing) unless it’s disclosed on the CIN. And the whole purchase is covered by the Consumer Guarantees Act, which gives you legal recourse if something isn’t as described.
Many dealers also include warranties or mechanical protection plans. At Armstrong’s, every used car goes through a full mechanical inspection before it hits one of our car yards, and we provide a report on this to buyers. That’s not a legal requirement for dealers, but it’s how we do things.
Private sellers
Private car sales can be cheaper, but there’s not as much protection if something goes wrong. The Consumer Guarantees Act doesn’t cover private sales in the same way, so it really is buyer beware.
Make sure you ask for service receipts, WoF history and registration documents. If the seller won’t produce them, for whatever reason, that’s a definite red flag. Same goes for prices that seem too good to be true – they usually are.
A safety note if you are buying privately: always take someone else with you to view the car. You’re effectively turning up to a stranger’s house or business so it makes sense not to go alone.
Auctions
Auctions can turn up bargains, but vehicles are often sold as-is, where-is. That means no test drive, no inspection beforehand and limited recourse afterwards. If you go down this route, research the auction house’s terms, understand any buyer’s premiums on top of the hammer price and set yourself a hard maximum bid before the adrenaline kicks in. Auction fever is real and it can be very expensive.
Imports
Japan is still a popular place to get used imports from. Imported vehicles are required by law to meet our (NZ) safety and emissions standards and also go through compliance checks before they can be registered here. If you’re going down this path, work with a reputable importer and make sure you get translated maintenance histories. A cheap import with no service records is a gamble you don’t want to take.
This is the unglamorous part, but it’s also the part that can save you thousands. Regardless of where you’re buying, these checks should be non-negotiable.
The Consumer Information Notice (CIN) applies to dealer sales. Read it carefully as it covers the model, year, odometer, engine number and whether there’s money owing on the vehicle. Cross-check every detail against the actual car you’re looking at. If something doesn’t match, ask why before you go any further.
The Personal Property Securities Register (PPSR) is how you find out if there’s finance owing on the car. For a small fee you can search the vehicle’s VIN and get a report. This matters because if there’s debt attached to the car, the lender can legally repossess it even after you’ve bought it and paid the seller. It happens and it’s as awful as it sounds.
A vehicle history report from a provider like CarJam can reveal whether the car has been reported stolen, written off by an insurer or had its odometer tampered with. Worth the money every time.
WoF and registration need to be current. You can’t legally drive a car on NZ roads without them, and a lapsed WoF can also invalidate your insurance.
Service history is your window into how the previous owner treated the car. Regular oil changes, timing belt replacements at the right intervals and receipts for major services are all good signs. If there’s no service history at all, that’s a risk you may not be willing to take.
The walk-around
Start outside and be sure to take your time. You’re looking for rust, mismatched paint, dents and uneven panel gaps – any of which could indicate previous accident damage or repairs done on the cheap. Check the tyres for tread depth and even wear. Uneven wear can suggest alignment issues or worn suspension, both of which cost money to fix.
Open the bonnet and look for fluid leaks, damaged belts and frayed hoses – if you don’t know what those look like, make sure you take someone along who does. Inside, test everything electrical: windows, air conditioning, the infotainment system, seat adjustments. Check the carpet for dampness or musty smells, which can mean water damage. Water damage is one of those problems that just keeps on ‘giving’.
Getting an independent inspection
For a small fee, an independent mechanic or inspection service like AA or VTNZ can do a proper pre-purchase inspection. They’ll pick up things you might not: hidden engine problems, worn suspension components or structural repairs from previous accidents. Consumer Protection strongly recommends getting one done before you commit, and so do we.
We pre-inspect all our used cars before they go on sale but if you’re buying privately, please don’t skip this step. The $150 to $200 it costs is nothing compared to what a missed problem could set you back later.
The test drive
Start in stop-start traffic to check how the clutch feels (if it’s a manual) or how smoothly the automatic shifts. Listen for knocks, clunks or vibrations that shouldn’t be there. Then get it up to highway speed (obeying road rules obviously!) and pay attention to steering stability and braking. Does it pull to one side? Does the steering wheel vibrate? Find a rough road if you can, because that’s where suspension issues and rattles tend to reveal themselves.
Test all the gears including reverse and use the handbrake on a slope. If you can, it’s also worthwhile driving it both cold and warmed up. Some problems only show themselves once the engine is at operating temperature.
If the seller won’t let you test drive the car properly, that’s another red flag.
By this point you’ve done your research, checked the paperwork and had the car inspected. You know what it’s worth and you know what’s wrong with it (if anything). That puts you in a strong position.
Check listings online to see what similar cars are selling for at the moment. Mileage, condition, service history and location can all affect the price, so compare like with like. If the inspection you did turned up any issues, use those to negotiate. A car that needs new tyres or a timing belt service can have a pretty hefty cost that’s completely fair to bring up.
Be realistic though. If the car you’re keen on is well-priced for its condition, don’t expect a massive discount. And be prepared to walk away if the numbers don’t work for you. There are always more cars, even if it feels like that one is meant just for you.
Your rights depend on where you buy. Vehicles from dealers are covered by the Consumer Guarantees Act and the Fair Trading Act. Private sales are generally buyer beware, which is exactly why the inspection and paperwork checks matter so much.
Paying for it
If you’re financing through a bank or finance company, have your pre-approval documentation ready to go. For private sales, bank transfer is the standard payment method. Avoid carrying large amounts of cash around and be cautious of sellers who ask for deposits through untraceable or unconventional methods.
The sale contract should include the agreed price, any conditions (like repairs or a new WoF), warranties and disclosure of any money owing. For dealer purchases, read the contract from start to finish. If something isn’t clear, make sure you ask. Don’t sign until you understand every clause. Taking it home overnight is completely reasonable.
Change of ownership needs to be completed with Waka Kotahi (NZTA). Both the buyer and seller need to do this, and it can be done online or at an NZ Post outlet. There’s a small transfer fee. Don’t skip this step, because until ownership is transferred, fines and toll charges still go to the previous registered owner (or to you if you’re selling).
Insurance should be arranged before you drive the car away. Comprehensive cover is the safest option and most lenders need it for financed vehicles. Get a quote before you finalise the purchase so there are no surprises around how much you’ll be paying.
Road user charges (RUC) apply if you’re buying a diesel, plug-in hybrid or light EV. Make sure the RUC licence is current and the sticker is displayed on the windscreen. If it’s not, you’ll need to purchase one before you drive it away.
Keep copies of everything: the CIN, sale agreement, inspection report and all receipts. You’ll want them if anything comes up later, and they’ll also help when it’s time to sell the car on.
Servicing is the single best thing you can do for the longevity and resale value of your car. Follow the manufacturer’s schedule, keep the receipts and don’t skip services to save money in the short term. It usually costs more later.
WoF and registration need to stay current. Driving without a valid WoF doesn’t just risk a fine, it can also void your insurance, which means you’re unprotected if something happens.
Small problems are worth fixing early. A minor oil leak or a slightly worn brake pad is a cheap fix now and an expensive one later. Budget for tyres, brakes and other wear items as part of your ongoing running costs.
We stock a range of used cars that have all passed thorough mechanical inspections. Every car comes with a full history report and current WoF, and we also offer optional factory warranties or mechanical protection plans on many of our cars too. Our team can arrange finance, insurance and trade-ins on the spot, which takes a lot of the back-and-forth out of the process.
If you’re not sure what model suits your situation, come in and test drive a few. That’s genuinely the fastest way to figure out what feels right. We use the same checklists when buying cars for our yards as we’d use if we were buying for ourselves, and we’re happy to show you exactly what we look at.
Do I need an inspection if I’m buying from a dealership?
It’s not mandatory. Dealers have to disclose known issues and the sale is covered by the Consumer Guarantees Act, so you’ve got more protection than a private sale. All our used vehicles at Armstrong’s are mechanically checked before sale.
What’s an odometer rollback?
This is when someone tampers with the odometer to show lower mileage than the car has done. A vehicle history report or a sharp-eyed mechanic can usually spot the inconsistencies between the odometer reading and the service records. If anything looks suspicious, walk away. There are plenty of honest cars out there.
Can a dealer sell a car with money owing on it?
Not without disclosing it on the CIN. If you see “money owing” on the notice, ask the dealer to settle the debt before the sale goes through, or choose a different car. Don’t take on someone else’s financial problem.
Is it worth paying more for a late-model used car?
A newer car might cost more upfront but can come with remaining factory warranty and modern features, which can reduce your running costs and even your insurance premiums. An older car is cheaper to buy but may need more maintenance. The right answer is whichever one fits your budget when you account for the total cost of ownership.
Buying a used car shouldn’t be scary or feel like a gamble. Do the homework, check the paperwork, get an inspection, and don’t let anyone rush you into a decision. Whether you end up buying from a dealer, privately or at auction, the process is the same: be thorough, be patient and be willing to walk away if something doesn’t feel right.
If you’d like help comparing options or understanding finance, come in for a chat.
