Don't buy an expensive car when you're young. Chances are it's more likely to get stolen.
Just buy a normal car like a Toyota Camry. If you really want to buy the car, see if you have enough money and take them both for a test drive. Take all the time you need to decide. In my opinion go for the Audi if you can afford it. German engineering is generally better the Japanese.
seriously go with a non luxury car they are cheaper for repairs and when you start paying for the insurence and repairs just a check up is like 100 plus so think about when you take over the payments. plus i friends that have them really your just paying for the name go with a ford or honda just keep looking dont try and be so spoiled your first car shouldnt really be that nice and whats the point. a cars a car if you really want either or id go with the audi they are a better car brand my parents have owned both car brands and audis are better the company service car so id go with them.
Wow, 16 and you're getting those cars? Way to waste money. Insurance for you and your car, either one, will be extremely high. If I were you, I'd get the Lexus is350.