|Manufacturer||Cadillac (General Motors)|
|Production||2002 (Concept car)|
|Body and chassis|
|Body style||2-door coupé|
|Layout||Rear mid-engine, rear-wheel-drive|
|Engine||7.5 L V12 Northstar XV12|
|Transmission||6-speed Semi-Automatic with electronic paddle shift|
The Cadillac Cien is a 2-door rear mid-engined, rear-wheel-drive high performance concept car created by Cadillac, designed by Simon Cox, and unveiled at the 2002 Detroit Auto Show to celebrate Cadillac's 100th anniversary ("cien" is Spanish for one hundred, which compares the Buick Centieme). It was featured in the 2005 film The Island and the 2014 film Transformers: Age Of Extinction. It was also a car in Midnight Club 3 (a 2005 game for Xbox and PS2), the Gran Turismo games 4 (a PS2 game released in 2004), PSP, 5, and 6 and Asphalt 9: Legends.
The Cadillac Cien had a longitudinally mounted 60-degree, 7.5-liter V12 which produced 750 hp (559 kW) and 650 lb⋅ft (881 N⋅m) of torque. This experimental engine featured direct injection and displacement on demand, which allowed the engine to run on only eight or fewer cylinders under light load. The Cien was designed at General Motors' Advanced Design Studio in England and built as a fully working road-going vehicle with the help of the UK-based engineering and motorsport company Prodrive. The Cien's monocoque chassis and body are made of aerogel composite and its design was inspired by the F-22 Raptor.