At a car shop.
The Audi A3 car is from volkswagon, and volkswagon cars are made in Germany. So they are based out of Germany, but imported to America, and many other countries.
The Audi A3 cars price starts at $27,270 for a six-speed manual transmission with front-wheel drive. Price goes up to $32,850 for the 2.0 TFSI Premium Plus model.
Reviews of different types of Audi A3 cars are found at Consumer Reports, Car and Driver, Motor Trend, Road & Track, European Car, Edmunds, and Autoweek.
There are a few websites where someone can find a car vendor that sells new and used Audi A3 cars. Some examples of websites are Carsales, and Auto Trader.
In order to find an used Audi A3 you should start by going to a local dealership. They may have used cars, but even if they don't, they will know where you could go to find one.
The 2011 Audi A3 has 16 valves.
The 2006 Audi A3 has 16 valves.
The 2009 Audi A3 has 16 valves.
The 2010 Audi A3 has 16 valves.
The 2007 Audi A3 has 16 valves.
The 2013 Audi A3 has 16 valves.