2018 R8 Specs: Engine. V10. Horsepower. 532 @ 7,800. Torque (lb-ft @ rpm) 398 @ 6,500. Top speed. 199 mph 9 Transmission. Seven-speed S tronic® dual-clutch transmission with rear-wheel drive. Acceleration (0—60 mph) 3.7 seconds. Valvetrain. 40-valve DOHC with continuous intake and exhaust camshaft adjustment. Combined mpg. 18 mpg.