Selling your car? This ‘dirty oil’ scam can turn a routine sale into a sudden, costly nightmare

The scam recently played out in Paris, Ont. (1), where a couple selling a mid-sized SUV lost thousands of dollars in a matter of moments. Their experience offers a sobering lesson for anyone planning to sell a vehicle privately this year.

How the dirty oil scam works

The setup is simple and carefully choreographed. One or more potential buyers arrive to inspect the vehicle, often after dark. While one person keeps the owner distracted, another tampers with the car.

According to fraud investigators, oil may be sprayed throughout the engine compartment, poured into the tailpipe or added to places it does not belong, such as the coolant reservoir. When the vehicle is started, the oil burns off, producing dramatic smoke and the appearance of a serious mechanical failure.

That smoke becomes the pressure point. The buyer acts alarmed, points out oil residue and confidently declares the engine is blown. From there comes the lowball offer, framed as a favour to help the seller get rid of a now worthless car.

An Ontario couple’s costly lesson

That is exactly what Mark Roffey and Carol Crawford say happened when they listed their 2016 Hyundai Santa Fe for sale on Facebook Marketplace. They were asking $7,000.

“He was looking under the mats and at the spare tire and had me completely occupied, so I wasn’t aware what the other person was doing,” Roffey told CTV News Toronto. “I didn’t notice that he had gone around to the front of the car and opened the hood.”

After reviewing security video later, Roffey said it appeared one man sprayed oil throughout the engine compartment while the other continued the distraction.

During a short test drive, the situation escalated. “The other gentleman who was hanging around the driveway then crouched down and placed something liquid in the tailpipe,” Roffey said.

When the vehicle returned, white smoke poured out. “There is all this white smoke, and the other guy who was in the driveway says, ‘Look, there is oil everywhere,’” he recalled.

Shaken and confused, Roffey agreed to sell the SUV for $1,000 cash. Only later, after watching the video with his wife, did the reality sink in.

“I said, ‘Let’s look at the video,’ and then we saw everything, and I said, ‘We’ve been scammed,’” Crawford told CTV.

Eli Melnick, an auto fraud investigator, told CTV News the deception is effective because it looks convincing to someone without mechanical expertise. “We’ve all heard the term buyer beware. Well, this is a case of seller beware,” he said. “They really conveyed a convincing story to the owner that his car had a blown engine.”

Why this scam is spreading

Private vehicle sales have surged as Canadians look to avoid dealership trade-in values and rising costs of living. At the same time, scammers are becoming more sophisticated and more willing to play the long game in person.

The Canadian Anti-Fraud Centre has repeatedly warned that fraudsters often rely on urgency and confusion to override rational decision-making. When something appears to go wrong suddenly and dramatically, people are more likely to accept a bad deal just to make the problem go away.

How to protect yourself when selling a car

There are practical steps sellers can take to reduce the risk.

Based on the most recent dirty-oil scam, the first strategy is to never allow unsupervised access to your vehicle. If someone wants to look under the hood, stand with them. If there are multiple buyers, keep everyone in sight.

Another way to protect yourself is to be cautious about evening meetups. Good lighting makes it harder to tamper with a car unnoticed and gives you more time to assess what is happening. As Chad Watwood, an attorney at LawBike Motorcycle Injury Lawyers suggests in an interview with Money.ca: “Make sure to meet in a public place, during banking hours.” By making the inspection and negotiation regarding the sale of your vehicle public, you reduce the risk of a buyer taking fraudulent actions.

The other aspect of safer meetups is to opt for a public meeting place. Meeting at a police station parking lot, bringing a friend or using a dealership consignment or verified online car-selling service can add layers of protection that private driveway sales lack. (Although, in the case of the Paris, ON, couple, his home security camera definitely helped identify the scam.)

Third, trust your instincts and slow things down. A genuine mechanical failure does not require an immediate sale. If a buyer claims something catastrophic has happened, end the interaction and have the vehicle inspected by a licensed mechanic. A good way to counter an emotional reaction is with evidence and facts — and for the seller that means keeping a record of all work and maintenance done on the vehicle.