Mpg

The latest prototype of the three-wheeled Elio vehicle was displayed at the 2015 LA Auto Show. Along with a few more details on deliveries and efficiency.

Fuel-efficiency declines slightly and is getting further away from the August 2014 peak.

We run through some questions to ask yourself if you are shopping for an electric vehicle. Many factors impact the decision, like whether to go new or used.

Contrary to perception, the EPA hasn't ruled on mandating a 54.5-mpg fleet average for 2025. The EPA won't make a decision on it until 2018.

US average new-car fuel economy remains unchanged at 25.4 mpg in July, UMTRI says.

Rumors say the 2016 Chevy Volt will come with a 53-mile electric range, 106 MPGe, and 42 miles per gallon. These are all boosts from the first-gen model.

Elio Motors raises almost $19 million in crowdfunding investments for it's high-MPG three-wheeler in three weeks.

The University of Michigan Transportation Research Institute calculates the average MPG of new cars sold in the US, and finds that June was worse than May.

Automakers may need to invest another $1,500 or so in midsize sedans in order to meet 2025 fuel-economy standards.

Elio Motors is working on P5, its fifth-generation prototype of the 84-mpg, $6,800 three wheeler that's due in the middle of 2016.

Americans boost new-car fuel-efficiency in May by 0.3 miles per gallon to 25.5 mpg, according to the latest UMTRI report.

Consumer Federation says 2025 CAFE standards are "achievable" and that automakers are making progress.

The average US new-car fuel economy fell 0.2 miles per gallon to 25.2 mpg for April.

Volvo's plug-in hybrid version of the XC90 SUV will get 112 miles per gallon-equivalent.

Over 1,300 miles in a diesel-powereed Chevy Cruze between Michigan and West Virginia, our columnist find a deeper appreciation for oil burners.

For the 2013 model year (and the second year in a row), the auto industry is making cars that are 1.4 mpg cleaner than the regulations say they need to be right now.

The 2016 Honda Pilot SUV will be the first time the Japanese automakers will use fuel-saving stop-start technology in a non-hybrid vehicle.

US green-car vehicle sales in January fell 8.6 percent from a year earlier, as Ford, General Motors falter.

Average US new-car fuel economy rose 0.3 miles per gallon to 25.4 mpg in January, according to new numbers from UMTRI.

We've been hearing for a while that the steady drop in US fuel prices are hurting sales of fuel-efficient cars like hybrids and plug-ins. As far as driving habits, though? Lower prices are the pump are having little impact on how much people are behind the wheel, according to the US Energy Information Administration (EIA).