A CAR cleaning whizz has revealed why you should never just use a bucket and sponge to wash your motor.
Experts at the RAC say using this old fashioned method could cost driver thousands later down the line.
The RAC have explained the best way to wash your car
They have revealed a much easier – and cheaper way – to get your whip gleaming.
The experts explained: “If you thought a bucket and sponge were central to a quick car wash, think again.
“While it might be simple to add a cup-full of car shampoo to a bucket of warm water and use the old-fashioned wash and rinse routine, you risk damaging your car’s paintwork.
“Dirt and grit can become trapped in a sponge, creating swirl marks in the paintwork.”
Instead they say drivers should arm themselves with a garden hose with a spray gun extension, two buckets, a wash mitt, car shampoo and a microfibre drying towel.
The first step is a quick pre-wash with your hose.
They explained: “In short, you’re looking to remove any loose dirt that might become trapped in the wash mitt, potentially damaging your paintwork.
“Removing more dirt now will save time and effort during the wash.”
Next up is the main wash.
Drivers should grab two buckets of water – one with shampoo, one without – and a wash mitt.
The RAC said: “Starting at the top, use the mitt coated in car shampoo to wash the remaining dirt from the paintwork.
“A gentle sideways motion is all that’s required. Many people think a circular motion is best, however a sideways motion will minimise swirl marks and ensure a consistent, even application.
“Rinse the wash mitt in the bucket of clean water before returning to the bucket of car shampoo to continue washing the car.”
Finally, motorists should grab a microfibre drying cloth to dry the car.
They explained: “These cloths are preferable to a chamois leather or water blade as there’s less chance of damaging your paintwork.
“Use a gentle sideways motion, or pat-dry if preferred.”
It comes after an expert mechanic explained why you shouldn’t buy cars from a major brand second hand.
Meanwhile, a car dealership worker walked customers through a key skill which could save them thousands.