Selling a car through online marketplaces isn’t new. It’s a go-to way for people to squeeze a little extra cash out of their used ride. But what most sellers don’t think twice about is who’s driving off with their keys — and maybe they should.

On May 31, Tania Leija sold her black 2013 BMW on Facebook Marketplace. Not long after, dashcam footage captured a man stepping out of that same BMW and firing multiple rounds outside Houston’s Galleria.

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Police told ABC 13 Eyewitness News that Leija isn’t a suspect — she no longer owns the car — but that didn’t stop strangers from tracking her down through the license plate. Worse, she started receiving threatening calls from a blocked number about the incident.

Here’s how it all spiraled out of control — and what Leija could have done to protect herself before handing over the keys.

A quick sale but costly oversight

When Leija finally found a buyer, she says he wasted no time. The man showed up almost immediately with another person and a backpack stuffed with $3,500 in cash.

"As soon as I told him that he could come, he was on his way," she said.

Leija admitted she skipped some key paperwork. Instead of drafting a formal bill of sale, she signed over the title and trusted the buyer to handle the rest.

"I had my title, I filled out my part, put my name, signed it, and then gave it over to him, and he said he would fill out his part," she said.

But Leija had no way of knowing whether the buyer ever completed the transfer with the Texas DMV — leaving her name still tied to the car when things went south. According to the DMV, both buyers and sellers should complete Form 130-U to officially transfer ownership and ensure the paperwork is filed.

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How to make your next sale safer

Although this deal took a dangerous turn, Leija said it was her first time selling a car and she skipped some steps that could’ve kept things safer. If you’re planning to sell a car online, here’s how to make sure your sale doesn’t go off the rails:

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This article provides information only and should not be construed as advice. It is provided without warranty of any kind.