Nice! Might need to buy a car soon, so that's handy!

A few comments:

- maybe add somes weights to the questions? For example it's more important that the rear view mirrors are properly attached than having no stain on the upholstery.

- some questions deserve more details. "After revving the vehicle in neutral...", am I supposed to rev it for long?

Other than that... Thanks! Looks pretty good :) Nitpick on the price: I would be ready to pay to remove ads, but not for the current price.