Hi there. The title is true, i've never actually washed a car apart from with soap and water so I don't know what for example "Clay" is or how "Wax" will help I'll give one picture of my A3 inside and out to see what I got: And yes they are leather seats. Firstly, I don't have a clue what products to buy, what kind of cloth should I use etc etc... If I was to talk into Halfords with a list of products i'd need to keep my car gleaming and protected (inc. the inside), what would I need to buy? Don't get me wrong I don't want someone to hand it to me on a plate, it's just that I don't know any of the cleaning product jargon so I do apologise in advance. Many thanks for any input.