I want to start a Car cleaning business this summer, but im not sure how much to charge people for be cleaning?

Hi guys, yeh i have finished school just this year, and have nothing much planned for the summer, I was thinking about starting a car cleaning service, but i wasent sure how much to charge people for doing it, i understand most charges change from the size of the car you are cleaning, and also i will only be using a bucket and a sponge, nothing like wax etc...... so any advice will be very good, im from the UK so it will have to be put into £'s not $ etc, thanks guys! :)

I'd recommend charging around £4 for small cars such as Smart cars and Fiat 500s. I drive a 2008 Ford Fiesta and I'd give you £6 for washing mine (new shape Corsa/Fiesta/Punto/Clio etc). I'd charge £8 for 4x4s (Range Rovers/Jeeps/Jimnys etc) and £10 for Vans. Anything bigger than that, charge £15.