Khan, 33, said the smash felt like 'being hit with a combo', and that his vehicle was sent skidding in wet conditions - an issue known as aquaplaning, where a layer of water builds up between the tyres and road surface.
It is not known if Khan was travelling with anyone at the time, but he said everyone involved was 'safe'.
Sharing videos of his Mercedes S350 after the incident, he wrote on Instagram: "Thank God everyone is safe.
"A scary experience. Car lost control on the motorway #aquaplane.
"Smashing into the side of motorway barrier felt like being hit with a combo!"
According to The Sun, the crash took place between junctions 12 and 13 of the M6 southbound on Saturday night.
The clips show his car suffered serious damage to its front and back, with the hood lifted up while the bumper hangs off.
The lights are still flashing on the mangled car, with the wet road visible beneath it.
According to the AA, aquaplaning - sometimes known as hydroplaning - is what happens 'when water builds up in front of your tyres faster than the weight of your car can displace it'.
"This forces water below the tyre, creating a layer of water between your tyre and the road," the website says.
"Because of this, your tyres lose their grip on the road. With no traction, you could lose control of the car temporarily, and be unable to steer, brake or accelerate. You might notice the engine suddenly getting louder or the steering suddenly going 'light'."
A car can aquaplane if there is 'standing water on the roads', which can then be affected by three factors: speed, tyre tread and water levels.
The AA advises keeping your driving 'smooth and steady' to help avoid aquaplaning, and to regularly check your tyres.
If your vehicle does begin to aquaplane, you should avoid slamming the brakes, slowly and gently ease off the accelerator and, when you feel yourself 'gaining more control of the car', brake to bring the speed down.
"Remember to also consider your stopping distances," the AA adds.
"Even without standing water and no risk of aquaplaning, stopping distances in wet weather will always be much longer, simply because your tyres have less grip. Keep at least twice the stopping distance you would in dry conditions."
Chosen for YouChosen for You
Most Read StoriesMost Read