In attempts to improve fuel economy, many companies are choosing to downsize and turbocharge engines. These small turbo engines tout the power of larger engines, but with much better fuel efficiency.

You'd expect an engine named Hurricane to be fairly powerful. And Fiat Chrysler Automobiles (FCA) has dropped hints that it would launch a new 2.0-liter 4-cylinder engine since as far back as 2013. Now it appears that engine is getting closer to ...

(AP) – Don’t expect to find a four-cylinder engine in a big, roomy, 17-foot-long sedan? You’re not alone. These big, four-door cars traditionally have V-6s, with choice of optional V-8s. But in the interest of fuel economy, Ford is turning tradition ...

WASHINGTON -- U.S. automakers could increase the fuel efficiency of passenger cars, gas-guzzling sport utility vehicles and other light trucks by 25 to 30 percent over the next 10 to 13 years, a National Academy of Sciences report said today. But the ...

Renault, Porsche Holdings and Mercedes were among the automakers gaining after Trump said he plans to change rules that regulate how many miles vehicles must travel on a gallon of fuel.

President Donald Trump has proposed drastic cuts to fuel efficiency standards for US vehicles, in another salvo against electric cars set to benefit the auto and oil industries. Requirements introduced by his predecessor Joe Biden to reduce emissions from gasoline-powered cars and trucks were “ridiculously burdensome” and gave “all sorts of problems to automakers”,