The 2018 Audi RS5 is expected to borrow the all-new twin-turbo 2.9-liter V6 of the 2017 Porsche Panamera. Here's the prototype lapping the Ring ...

Prototype drive of Audi's electric-supercharged, twin-turbocharged diesel RS5.

What's this thing tailgating me at a distance of barely four inches? It's Audi's new RS5 cabrio, arriving in the UK early next year to beat a frenzied assault on eardrums nationwide.

This is Audi’s new RS5 out on test on the roads surrounding the Nurburgring, and under the bonnet is a 450bhp twin-turbo V8 that’ll let this coupe take the fight to BMW’s M3. And this RS5 is ...