American AI is usually American Airlines, and usually appears because of a baggage fee paid at the airport, or a purchase made during a flight. posted 09/11/2012 Helpful (4)
Electric motors are in general, a lot more efficient that internal combustion engines. An average combustion engine has about 18â20%. A formula one engine, has about 50% of an efficiency.
In an effort to make the most fuel efficient vehicles, automakers are looking at smaller displacement engines, which have made it into plenty of compact and subcompact vehicles. The motors in these vehicles donât pack much power, or torque, and are all aimed to use the least amount of fuel. These cars are all ranked in order, right down to the cubic centimeter from most displacement, to least, so take a look below, to see the list of smallest engines available today. The subcompact Mazda2 is the first on our list, with the biggest engine here.