quote: Power per unit of weight or or per unit of useable engine volume is much better. For example, Corvette push-rod engines get much less power "per liter" than comparable DOHC engines, but push-rod engines are shorter and can be lighter, so Chevrolet is able to fit a more powerful engine in the same engine compartment than a comparable DOHC.
quote: Wow, straight from GM's mouth. I bet that tastes nasty.
quote: I can guarantee you that a 3-liter engine that had the same horsepower rating would be far less efficient.
quote: 5th Place: Chevrolet Cruze DieselLive next to the freeway? Only ever drive on the freeway? Never have to use the back seat? This is your car.4th Place: Honda Civic HybridMating any of the other four powertrains to the package would be a tremendous boost for an otherwise nicely thought-out car.3rd Place: Volkswagen Jetta HybridIf you disregard the brakes and mammoth depreciation and insurance costs, this one is a favorite and worth every penny.2nd Place: Toyota PriusThe group's wizened eco-warrior isn't as impervious as its EPA ratings suggest. Luckily, the modified suspension makes it less bland.1st Place: Volkswagen Jetta TDINote to competition: The Jetta TDI added content for '14. And a more powerful, more efficient TDI engine is due for '15.