2015 Audi R8 for sale! Motorcar Classics is proud to present this stunning 2015 Audi R8 V10 Quattro Spyder featured in Brilliant Red with brown leather interior and back convertible top. The Audi R8 V10 boasts a 5.2-liter V10 that produces 525 hp and 391 lb-ft of torque.... via Americanlisted