There is a car with a V12 engine that can run on a single cylinder. - Apparently.
The Marussia B1, a Russian supercar, boasts a 6.0-liter V12 engine that can run on just one of its 12 cylinders. This is achieved through a complex system of valves and camshafts that can isolate individual cylinders. The car's designer, Nikolai Fomenko, claims this feature allows the engine to run more efficiently and reduce emissions. The Marussia B1 was unveiled at the 2010 Geneva Motor Show, showcasing its unique engine technology.