The Cabriolet version of the Bugatti Veyron model has a 7993 cc (487.7 ci) 64 valve W16 Quad Turbo Petrol engine. It has a 7 speed/ Semi-Auto gearbox with the power being delivered through it's AWD system.
The Bugatti Veyron 16.4 Grand Sport Vitesse - [2012] has a top speed of 255 mph (410.3 kph) and can accelerate from 0 to 60mph (0-96.6 kph) in 2.50 seconds or 0-100kph in 2.6 and can achieve an estimated 1/4 mile drag time in 12.37 seconds with a trap speed of 144.1 mph.
Porsche Cayenne Turbo S 4.8 V8
Engine: Turbo Petrol | 4806cc 32v V8
Top Speed: 176 mph
0-60mph: 3.80 seconds
Porsche 911 GT3 PDK 992
Engine: Naturally Aspirated Petrol | 3996cc 24v F6
Top Speed: 318.6 kph
0-100kph: 3.3 seconds