If you’re lucky enough to own your own, you probably think you know everything there is to know about your car.
They’re practically like a second home the amount of time you spend sat in them driving to work, popping to the shops or rolling round the Maccies drive through.
But even after owning one for years, you might still find features you’ve never noticed – from a hidden switch to ‘secret buttons’.
And this bloke couldn’t believe how long it took before he learned what the proper use for a slot on his car was for.
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In a viral TikTok, Justin made the astonishing discovery about his car’s fuel cap after ’38 years on this Earth’.
Captioned ‘How did I not know this?’, the clip shows the bloke removing the fuel cap, as if he was about to refuel it. You know, like you do.
He then points towards a 'slot' on the door and hangs the cap on it, exclaiming that '38 years on this earth and I just learned this'.
The video has since been viewed over a million times, and many viewers were also shocked at Justin's discovery.
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One commented: "30 years and I just learned because of your video. Thanks bro," while some others have been less than impressed, with one commenting: "I learned this when I was 6."
Another TikTok user Jimmy (@jimmy22112) duetted Justin's video, responding: "no flipping way", before rushing to his own car to discover that he too has this slot.
And it’s not the first time TikToks have gone viral for revealing car hacks.
Driving Test Success has posted a number of car hacks on its account, including one trick that can de-ice your car within seconds.
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The video demonstrates the hack, which starts by putting the car’s temperature up high.
Next up, the video explains, “Put the windscreen fan on max,” adding: “The ice will start to melt from the heat.”
All you have to do after that is wipe away any excess water and return the fan to its normal setting and hey presto - your windscreen is clear. Plus, you’re heating your car up in the process!
Although while useful some of these hacks may be, they're not always guaranteed to be successful.
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A de-icing hack backfired on one Nottingham man as his car ended up reversing into his neighbour's garage.
"The car was iced up so I was going to turn my engine on and then go to the boot to get the de-icer and obviously as soon as I turned the key it just reversed," the man explained about the incident.
"I grabbed my steering wheel but I didn't know what I was trying to do. It was just blind panic and it was early in the morning so I was tired."
Well, drive safe lads.
Jess Battison