Buying a Used Car in New Brunswick: A Mechanic's Guide

Private sale or dealer in New Brunswick?

A private sale is usually cheaper up front, and a dealer is usually easier. Neither one is automatically safer. The real differences are tax, paperwork and who you can go back to if something goes wrong.

Buy from a dealer and HST goes on the bill of sale, and the dealer handles most of the registration paperwork. Buy privately and you pay Provincial Vehicle Tax yourself when you transfer the car at Service New Brunswick. At the time of writing it's 15% of the vehicle's fair value. Fair value is the greater of the price on your bill of sale and the average wholesale value in the Canadian Red Book. If your price is within $1,000 below book, they use your price. There's also a minimum: a motor vehicle is never taxed on less than $1,000.

That rule is why writing $500 on the bill of sale for a $9,000 SUV doesn't work. SNB looks up the VIN, taxes it on the book value anyway, and transactions can be audited. If the car genuinely is worth less than book because of high mileage or heavy damage, the province has a refund process for that. Use it instead of fudging the paperwork.

A private seller sells the car as it sits. There's no comeback if the transmission starts slipping on the drive home along the Trans-Canada. That's not a reason to avoid private sales. It's a reason to do the checking before you pay, not after.

Used car inspection checklist: what a mechanic actually looks at

On a Maritime car, start underneath. The engine can be perfect and the car still not worth buying if the frame is soft. Years of road brine eat brake lines, fuel lines, frame rails, rear subframes, rocker panels and the mounting points for the suspension. Surface rust on a 10-year-old car is normal here. Flaking, swollen metal you can push a screwdriver into is not.

Be suspicious of fresh black undercoating on an older car. Sometimes it's honest rust protection. Sometimes it's been sprayed over rot the week before the ad went up. Tap it. Rotten metal sounds dull and gives.

Ask the seller not to start the car before you get there, then put your hand on the hood when you arrive. A warm engine can hide a hard start, a rough idle, a lifter tick or blue smoke that only shows up cold. A car that's been sitting in a Shediac driveway all week tells you the truth on the first crank.

Plug in a scan tool even if there's no warning light. If the codes were cleared recently, the car's readiness monitors won't be complete, and that's worth asking about. Check the oil and the underside of the oil cap for milky sludge, look at the coolant, and look at the ground where the car's been parked. In winter the snowbank under the engine is a very honest leak detector.

• Frame rails, subframes and suspension mounts for rot, not just surface rust
• Steel brake and fuel lines, especially where they clip to the body
• Brakes: pad thickness, rotor condition, and rear calipers that have seized from sitting
• Coil springs (broken bottom coils are common here) and leaking struts
• Ball joints, tie rod ends and wheel bearings
• Exhaust leaks and rotted hangers
• Cold start, idle, and stored or recently cleared trouble codes
• Transmission shifts, and 4x4 or AWD engagement if it has it
• Tire wear patterns, which can point to alignment or suspension problems
• Heater, defrost, heated seats and every light, because you'll want all of them in January

Check the paperwork: liens, history and recalls

Run a lien search before any money changes hands. If the seller borrowed against the car and still owes on it, the lender's claim can follow the car to you. Service New Brunswick's Personal Property Registry has a Lien Check service where you search by VIN online and pay by card. If the car has lived in other provinces, a CARFAX Canada report with a lien check searches each province or territory where that VIN has been registered (it excludes the Northwest Territories).

A history report also shows reported accidents, damage, rebuild or salvage status, theft records and odometer readings. Treat it as one tool. Plenty of fender benders never get reported, and CARFAX itself tells you to use the report alongside an inspection and a test drive.

Make sure the VIN on the dash, the driver's door jamb and the registration all match. Then check recalls. Transport Canada says to use the VIN on the manufacturer's website to look up open recalls, and its own database covers recalls issued in Canada from 1970 on. The manufacturer will almost always fix a safety recall free, so an open one isn't a deal-breaker. Just get it done.

Registering a private sale car at Service New Brunswick

The transfer happens at any Service New Brunswick service centre, and you can't drive the car until the registration is recorded in your name. Plan the day around that.

The seller signs both pages of the registration certificate, and your name and address go on the transfer. You bring the signed registration, an acceptable bill of sale and proof of insurance for that specific vehicle. SNB won't issue a registration without the insurance, so call your broker first. You pay the tax and motor vehicle fees at the counter.

Here's one that surprises people from other provinces. In a New Brunswick private sale, the plate stays with the vehicle unless it's a personalized plate. And since April 1, 2026, the province no longer issues registration stickers for plates, so don't go looking for one. If the car has an expired inspection, SNB can issue a 24-hour transit marker so you can move it to an inspection station.

The MVI sticker: what it tells you and what it doesn't

Look at the inspection sticker on the windshield and note when it expires. Most passenger cars and light trucks are now inspected every two years, so a sticker with 20 months left buys you time. One that expires next month means you're the one paying for whatever it needs to pass, and on an older Maritime car that can be brake lines, springs and a rocker panel.

A fresh sticker means the car met the provincial safety standard on the day it was inspected. It doesn't mean the engine is healthy, the transmission is good or the frame will see another winter. A sticker is a snapshot of one day, not a promise about the next two years.

Buying from outside the province? An out-of-province vehicle being registered in New Brunswick gets 14 days to be inspected. A valid inspection from Nova Scotia or PEI is honoured until its expiry date.

Why a pre-purchase inspection at the seller's place pays

Most sellers won't let you take their car across town to a shop for an hour, and you shouldn't have to try. An independent pre-purchase inspection where the car is parked gets around that. The seller doesn't lose their afternoon, and you get a mechanic's opinion before you've committed to anything.

The car you walk away from is the cheapest repair you'll ever make. A rotted subframe or a slipping transmission costs nothing if you find it before you pay. Find it after and you've bought it, plus 15% tax on it.

We do pre-purchase inspections at the seller's location around Dieppe, Moncton, Riverview and Shediac. Send us the ad, the year, make and model, and where the car is. We'll confirm what we'll check and the price before anyone drives out, then go through it with you, rust and all.