How to check for odometer rollback before buying a used car

Any record with a higher km than the dash shows today is a stop sign until someone explains it.

Why it is worth checking

CARFAX Canada found 20,642 vehicles with rolled-back odometers in the history reports ordered in 2025. Its president put the cost plainly: a rolled-back odometer can leave buyers “paying more than a vehicle is truly worth”, and it hides wear that comes with higher mileage.

Two recent cases show how it reaches buyers. In July 2026, Calgary police said they believed there could be more victims of a man who allegedly rolled back the mileage on vehicles before selling them on Facebook Marketplace. And CBC’s Go Public told the story of a BC buyer whose 2012 Subaru showed just under 98,000 km; when it developed problems, he found a Subaru dealer’s recall record from 2020 showing 112,000 km. That car came from a registered dealership, which refunded him. A private seller doesn’t have to.

Regulators link the practice to curbsiders: AMVIC warns that curbers “frequently sell vehicles that have hidden damage, tampered odometers or mechanical issues”.

What “potential odometer rollback” means on a report

History reports collect odometer readings from registrations, inspections, service shops and insurers. When a later reading is lower than an earlier one, the report flags it as a potential rollback. It is “potential” because there are innocent explanations:

• A typing error at a shop or registry (an extra zero, or a missing one).
• Miles recorded as kilometres, or the reverse, on a car imported from the US.
• A replaced instrument cluster, which should come with a repair invoice.

Ask the seller for the record that explains it. A typo looks like a typo: one odd reading, with the pattern continuing normally on either side. A rollback looks like a step down, with every reading afterwards built on the lower number. If the seller can’t explain it, don’t buy.

Paper trail checks

1. Get the VIN and order a history report. Read the odometer readings as a timeline. Note gaps of several years with no readings, which is where tampering hides.
2. In Ontario, ask for the UVIP. It lists every registered owner and the odometer reading at each change. A seller must give it to a private buyer.
3. Ask for service invoices. Most list the km. Put them in date order beside the history report.
4. Call a dealer of the brand. With the VIN, a dealer’s service department can often see warranty and recall work done at other dealers of that brand. Some will tell you the dates and km of past work; others won’t. In the CBC case, a recall record is what gave it away.
5. Look for old listings. Google the VIN, and run Google Lens on the photos. An earlier ad for the same car, with more km, is the clearest proof there is.
6. Read the stickers. Oil-change reminders on the windshield or door jamb show the km at the last change. Sellers often forget to peel them off.

Physical signs

Mileage leaves marks. Compare what you see with the number on the dash:

• Pedals. Brake and clutch pedal rubbers worn smooth or replaced on a “low-km” car.
• Steering wheel. Shiny, worn or peeling leather where the hands sit.
• Driver’s seat. A worn or split outer bolster from getting in and out, and a sagging cushion.
• Shifter and buttons. Worn knobs and rubbed-off markings on the most-used switches.
• Carpet. A worn patch under the driver’s heel.
• Parts replaced early. New brake rotors, a new clutch or a timing belt done on a car that shouldn’t have needed them yet. Ask why.
• The cluster. Scratches around the instrument cluster screws or trim, or digits that don’t line up on an older analogue odometer.

None of these proves anything alone: a city car can wear its brakes early, and a careful owner can keep a wheel like new. What you are looking for is a car whose wear and records tell one story, and an odometer that tells another.

Have a mechanic scan the car

Digital odometers are easier to change than the old mechanical ones, and tools to do it are sold openly. But the dash isn’t the only place a modern car stores its mileage. Depending on the make, the engine computer, transmission controller, ABS module or body controller can hold their own records, and some keys store mileage too. A mechanic with a good scan tool can compare them. A pre-purchase inspection is the right time to ask; tell the shop you want the mileage compared across modules, because it isn’t part of every inspection.

Low km for the year

A low-km car is what everyone wants, which is why rollbacks happen. A 10-year-old car with 60,000 km is possible: a retiree’s second car, a city commuter who switched to transit. It just needs records to prove it. The lower the km for the age, the more paper you should expect to see.

If you find a rollback

• Before you buy: walk away. Report the listing to Facebook or Kijiji, and tell your provincial regulator if the seller looks like a curbsider.
• After you buy: keep the listing, the messages, the bill of sale and the records that show the real mileage. Report it to your local police, and to the dealer regulator if a dealer sold it. In the CBC case, evidence from a dealer’s service record got the buyer a refund.

Before the meetup, with Sift

Sift, a free browser extension for Facebook Marketplace and Kijiji, helps on a computer before you meet:

• A maximum-km filter, read from the site’s vehicle details and from the listing text (“150K km”). Be honest with yourself about what it does: it narrows the search, but a rolled-back car sails straight through it. A low-km car that looks too good is your cue to ask for records.
• Price history. Sift remembers every price it sees, so the price-drop badge and popover show how a listing’s price has moved since Sift first saw it.
• Reposted badge. When the same car is relisted to look fresh, the badge shows when Sift first saw it and at what price. Screenshot the km in any ad you are serious about, so you can compare if it comes back.
• The same search on the other site, one click away, to find the car listed twice with different details.

Start a hunt › Car saves a preset with year and km limits, branded titles hidden, dealers hidden and already-seen cars dimmed.

Sift does not decode or check VINs, pull Carfax reports, search liens, check stolen-vehicle databases, verify odometers or prove whether a seller is a curbsider. The records and the mechanic’s scan above are the check. Sift runs in Chrome, Edge and Brave on a computer.