Don’t let safety take the backseat, this mom warns.

A baffled mom shared the terrifying moment she realized her child’s rear-facing car seat was burning up — thankfully, without her kid in it — after the backseat mirror supposedly reflected harsh sunlight onto the fabric.

Natausha Furlong posted a TikTok clip, which scored 1 million views, cautioning parents who were considering buying a mirror for their kids in rear-facing car seats.

“If you have a car seat, you need to watch this, because I didn’t even know this was a thing until it literally just happened — and it could have been so much worse,” the Canadian said in the clip before showing her daughter’s purple car seat.

A small trail of smoke swirled from a patch of its upholstery that sat directly in the hot sun.

The content creator had just opened the door to the backseat to buckle her daughter into the seat when she saw the smoke, saying her “car seat is on fire from the heat.”

“Oh my God, is this even real life?” exclaimed Furlong. “What the f–k — it’s, like, legit smoking.”

It wasn’t until her 9-year-old pointed out the backseat mirror that she realized what the apparent culprit was.

“It’s the mirror,” she said, explaining that the reflective surface was directing sunlight onto the car seat’s fabric, burning a hole.

In the video, she blocked the light with her hand and showed the burned spot in the car seat, where the black fabric was frayed and crisp.

“Could you imagine if she was sitting in her seat?” she concluded the clip.

In the caption, she urged parents to “be aware of how quickly this can happen,” while users in the comments were divided over the so-called danger.

Some thought it was fake, while others couldn’t believe her 9-year-old figured it out first — but many were just as terrified as Furlong.

“The fact a 9 year old can figure this out but not you,” one person snarked.

“That’s exactly why I removed the mirror that was in front of my 3 month olds seat. THIS exact scenario played in my head,” another wrote.

“New fear unlocked,” someone else commented.

“Hey there I know the mirror is to let you see baby,” one user wrote, “look into a car seat camera I’m sure it’s mentioned somewhere else in the comments but it’s amazing.”

“People are rude! Thanks for sharing bc a lot of parents have these mirrors and how scary if that happens when you’re driving!” another said.

In a later clip, she recorded herself tossing out the backseat mirror and stomping on it.

The Post has reached out to Furlong for comment.

This phenomenon is not reserved for just cars; in fact, reflective surfaces have the ability to start fires at home.

Last year, a woman shared a video of her brown leather couch, which was smoking while soaking up harsh sunlight in her home.

In a subsequent clip, she shared that her two-sided makeup mirror — which has one magnified side and one non-magnified side — nearly incinerated her sofa.

“I was today years old when I learnt how house fires can start,” she captioned the first video.