Mercedes-Benz, longtime stalwarts of the V12 engine, is considering lowering its preferred cylinder count by a third. While our first inclination is to assume that this change is being made to increase the fuel efficiency and lower the emissions of the overall Daimler line, the real reason that the bent-12 engine program is being dropped is simply because the block is too long. A V12 is, for all intents and purposes, the same length as an inline-six, and the German automaker's latest line of mainstream engines are all in a V-design, so its cars are no longer being designed with an engine compartment large enough to house such a lengthy engine. Fear not, power fans, as the company isn't abandoning high horsepower in general. The V12 program is apparently being shifted towards twin-turbo V8s, and the magic of forced-induction means there's no reason to assume that fewer cylinders will equal fewer ponies. Expect the moratorium on V12s to begin the next few years.