What are the key features to look for in the Audi R8?

I am interested in purchasing an Audi R8 and want to make sure I am getting the best value for my money. What specific features should I be looking for in this particular model?

You should definitely check for the presence of Audi's signature quattro all-wheel drive system, as it provides superior handling and traction on all types of roads. Also, make sure to test out the car's acceleration and braking capabilities to ensure maximum performance.