does anyone here know how Audi calculate their "excess charges" when they give you a finance quote? I did question the salesman specifically about what it includes, but he just comes back with its the interest etc + any admin charges - which doesn't exact tell you a lot! I ran some figures when I got home based on the APR they quoted of 6.3%, and the interest alone (assuming I was calculating correctly came up to ~600 more!). Also how do they do the estimate for the balloon payment? (I know its down to mileage/wear tear and depreciation)I just like to see exactly what I might be signing for (+ if they are trying to sneak extras in like GAP without telling you)