Audi A8 TDI: Range For Days... Literally

The Audi A8 TDI is a fantastic road car with loads of features, oodles of luxury, and a brilliant diesel engine that s well suited to the genre. And, thanks to a large fuel tank, it has tons of range. We test the range by visiting some of the world s largest roadside objects and find out how many we can see on one tank before we run dry.