It used to be that American muscle cars were competing against themselves when it came to power. But rumor has it that, in the case of the Chevrolet ZR-1, the domestic horsepower war has a new international benchmark: the BMW M-division V10.
Stiff competition from Volkswagen and Toyota failed to unseat BMW's 5-liter V10 engine as the best engine in the world for the second year in a row, according to the judges presenting at the International Engine of the Year Awards 2006 held at Engine Expo in Stuttgart, Germany. The powerplant also beat out other entrants to win in the categories of Best Performance Engine and Best Above 4.0-liters. BMW also received kudos for the Z4 M's 3.2-liter and twin-turbodiesel 3.0