Very easy to use. Gives clear and simple information, and summerises the searched measures. For instance the clear information: it says in red 'Do not buy' large letters at the top of the page, then the reason for the warning. The other measured parameters are listed with a tick box that they are good. I went for the up to £30,000 guarantee, note you need to get the seller to sign a form to make this guarantee valid. I would use when buying from any garage or private sale, however auction houses will not sign the guarantee form and many cars being put through the auction by finance houses so have the finance triggered as (Do not Buy); in my case it was Black Horse (a Bank) which were selling at auction and the car still had outstanding finance (to Black Horse) on it. A bit of a ramble but I hope it was of use.