Quebec protects used-car buyers more firmly than most provinces, but only if you know what to look for. This guide covers the parts that actually decide whether a purchase goes well.
What you will pay in tax
Buying from a dealer, you pay GST at 5% and QST at 9.975%, roughly 15% combined, on the agreed sale price. The advertised price must already include preparation, transport and administration fees; a dealer cannot advertise one number and add those on later. Only the taxes and the small tire environmental duty may be added on top.
If you trade a vehicle in, tax is calculated on the price after your trade-in value is deducted, which is the single biggest financial reason to trade rather than sell privately.
The legal warranty on a used vehicle
Quebec's Consumer Protection Act gives most used vehicles bought from a dealer a warranty of good working order, at no extra cost, based on age and kilometres. The thresholds were widened in April 2024, so older articles online understate them:
- Category A (4 years old or less and 80,000 km or less): 6 months or 10,000 km
- Category B (5 years or less and 100,000 km or less): 3 months or 5,000 km
- Category C (7 years or less and 120,000 km or less): 1 month or 1,700 km
- Category D (over 7 years old or over 120,000 km): no good-working-order warranty
The warranty covers parts, labour and reasonable towing. It cannot be waived, not even in exchange for a lower price. And Category D does not mean unprotected: the general legal warranties of fitness for purpose and reasonable durability still apply to every vehicle sold by a merchant.
Read the label on the windshield
Every used vehicle at a Quebec dealer must carry a label showing the price, the year, make, model and serial number, the odometer reading, the warranty category, and notice of your right to the previous owner's contact information. It must also disclose prior use as a taxi, driving-school, police or rental vehicle. If a specific part is excluded from the warranty, that has to appear on the label with a repair estimate, or the exclusion does not stand.
Safety certificates work differently here
If you are arriving from Ontario, adjust your expectations: an ordinary used passenger car sold by a Quebec dealer to a consumer does not require a safety certificate. Mechanical inspection certificates are required in specific situations, such as vehicles brought in from outside Quebec or rebuilt after serious damage. This is exactly why an independent inspection is worth the hundred-odd dollars.
Have it inspected anyway
Any dealer worth buying from will let you take the vehicle to your own mechanic. We do. A pre-purchase inspection tells you what is coming in the next year, which turns a nervous decision into an informed one. If a seller resists, that is your answer.
Before you sign
The contract must show the dealer's OPC permit number, the price, the taxes, the total payable, the warranty details and any trade-in terms. Check that the vehicle identification number on the contract matches the one on the car. Make sure any verbal promise, such as a repair before delivery, is written into the contract.
Changing your mind
If you finance through the dealer, you have two days to cancel that credit contract, and for a used vehicle you can do so even after taking delivery, provided the car comes back in the same condition. If you pay cash or use your own bank, there is generally no cooling-off period at all. Decide before the pen touches paper.
Where to go next
Registering the car with the SAAQ · Financing with imperfect credit · See what we have in stock
Information on this page reflects Quebec rules as of August 2026 and is provided for general guidance only. It is not legal or financial advice. Rules and fees change; confirm current details with the Office de la protection du consommateur, SAAQ or Revenu Québec.