opinions wanted; car sales gone bad

When I sell a used vehicle here is what I do.

I list pertinent vehicle info: VIN#, mileage, engine - you get the picture.

I then list everything that I know is wrong with the vehicle, visually and mechanically that I'm aware of. Mechanical, oil usage, gas mileage EVERYTHING.

I then put a clause in, this vehicle VIN# blah blah blah, year, make and model, blank in color is sold to SO and SO on whatever date, whatever year. Purchaser agrees to this vehicle being sold/bought AS IS/AS WAS for the amount of:_________


I date the document and have the buyer sign it. I also provide them a copy.