Gtechniq W2 Multi-Purpose Cleaner for Cars, 17 fl oz | Effectively Removes Stubborn Food, Pen and Soil Stains from All Surfaces, Works on Carpet, Tires, Engine Bays and Fabric

It was expensive for the amount received and was completely ineffective against the stain I tried to remove.

Best on the market, no question 👌

Used it to clean the roof of a second hand Audi A3 Cabriolet. Did a great job and easy to use. Also has many other uses as a 'cleaner'. It might be a bit more expensive than other makes but does its job well.

A little goes a long way when diluted to the recommended level. I use this around the car & in the home for general cleaning and detailing, It's great stuff that does exactly what it says on the bottle. Highly recommended for all sorts of small area cleaning and degreasing...

I have a Mercedes convertible and my roof has not really been up to scratch for a long time. Went online to buy my usual product and found that Gtechniq had been rated higher!! I bought 0.5 litres and used it "neat".....I could not believe how much "filth" flowed when I rinsed off the Cleaner. My roof is still not perfect, and as I had used the whole lot, I have ordered 5 litres and will use it 50/50 the next time. I would certainly recommend W2 for this purpose and I think it is a great product to have in your home for anything stubborn, even if you do not own a convertible :-)

Cleaned my roof with two applications which removed most of the moss and dirt accumulated over a year and a half. There are still stubborn patches of dirt which I am sure will be removed with another application. Great product and better value for money than another brand I have tried as there is still 3/4’s of the bottle left