Drivers are just realizing what a key button in your car does

A TIKTOKER has revealed how to take advantage of a commonly misunderstood part of your car – with just the press of a button.

The use of a car's air recirculation button – with the little car symbol and arrow going inward – is a mystery to many.

But it is actually a useful feature of your car that can make you more comfortable and save you a buck.

Influencer Zack d films (@zachd_filmspt9) shared why cars have these buttons in a video on TikTok.

"If you press it, it'll actually get your car as cold as possible," he said to open the clip.

"It does this by cutting off the outside air and recirculating the already cool air inside your car," he explained.

"But it also has some other uses," he said.

By recycling the air, recirculation also blocks fumes and unpleasant odors from entering the car while driving he said.

Over 3,000 people liked the video and dozens left comments.

Some people were happy with the advice, leaving comments like "Good to know" and "Spread the gospel guys".

"It also works with heat too people! not just A/C," another helpful user added.

Other people were surprised that everyone did not know about this already.

"I thought that was common sense," one person replied.

Many influencers have revealed car hacks and tips that have enlightened drivers.

One TikToker shared how he cleans the nooks and crannies of his car with a surprising trick.

And users were impressed by this woman's simple tip for finding her car in a packed parking lot.