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The tricky business of octane, power, and MPG

Given tepid green-car sales numbers this year, consumers in the US aren't making the transition away from internal combustion engines too quickly. Regulations are still mandating cleaner emissions, though. In addition to downsizing and turbocharging, there's growing consideration about moving to higher-octane fuel to improve overall efficiency. In a new report, engineers at FCA, Ford and General Motors Powertrain are showing that it could work, too. The major advantage to higher-octane fuel is that it supports higher compression ratios. That in turn can lead to more power from burning the same amount of gas. "Higher ethanol content is one available option for increasing the octane ratings of gasoline and would provide additional engine efficiency benefits for part and full load operation," the researchers write in the study's abstract. The authors even think it could be possible to update some modern vehicles' engine calibration to be optimized for the better gas. While the benefits are there, we still have a long way to go before higher-octane fuel becomes a national standard. According to Green Car Congress, 87 percent of the gas sold in the US is regular grade 87-octane. Meanwhile, premium 91-93 octane makes up just 10 percent. The various grades of fuel illuminate even more annoyances with the current system. For example, Ford generally recommends 93-octane for EcoBoost engines, and the power outputs that the company publishes are based on using it. However according to Green Car Reports, such premium gas is very difficult to find in some regions of the US, especially along the West Coast. The powertrains still run on lesser grades but with lower power output. The researchers' discussion of possibly increasing ethanol in gas also comes during a heated debate on the substance. The current administration is pushing for less of the corn-based fuel in the coming years. Although, several presidential hopefuls might be favor of reversing that course.

Ford builds USAF Thunderbirds Edition Mustang for charity

Each year since 2008, Ford has created a one-off Mustang to celebrate military aviation, and the cars have been auctioned off at the Experimental Aircraft Association (EAA) Gathering of Eagles charity event to raise money to inspire the next generation of aviators. This year's charity car is the 2014 Ford Mustang GT US Air Force Thunderbirds Edition, which also helps celebrate 60 years of Thunderbirds air show excellence.
Of all the EAA charity cars, this Thunderbirds Edition is the most in depth. Painted to match the F-16 Tomcat fighter jets used by Thunderbirds, this Mustang also gets a widebody kit and 22-inch Forgiato wheels to go with the cockpit's Recaro bucket seats, rear-seat delete and modified navigation screen and gauge cluster. Even the Mustang's projector puddle lights have been changed to show an aircraft silhouette - rather than the Mustang's galloping horse logo - when the doors are open.
Themes for previous EAA charity cars include the Blue Angels, SR-71 Blackbird and the Red Tails as well as the F-22 Raptor-inspired AV8R and AV-X10 "Dearborn Doll" models. Scroll down for the press release for the 2014 Ford Mustang GT US Air Force Thunderbirds Edition, and be sure to check out our galleries for all six aviation-themed Mustangs.

1 in 7 Americans say they might buy an EV next, as sales of electrics surge

About one in seven driving Americans may likely purchase an electric vehicle as their next car, according to an AAA poll, meaning that as many as 30 million Americans may pony up for an EV within the next three to five years. While some of the motivation is environmental, survey recipients say that lower maintenance expenses and solo access to high-occupancy-vehicle lanes are also among the factors behind potentially going electric. Take a look at the AAA press release on the study here. The poll indicates that about as many people are planning to buy an EV for their next car as are looking to buy a pickup, which is impressive given that the best-selling US vehicle is the Ford F-150. And things should only improve, as about 20 percent of millennials polled said that their next car would probably be an EV. The results are all the more encouraging, at least among green-car advocates, because gas prices have fallen about 40 percent within the past five years, meaning that there's less of an incentive to go electric from a purely economic perspective. Through the first quarter of this year, US plug-in vehicle sales were up about 63 percent from a year earlier to about 39,000 vehicles. Meanwhile, when it came to AAA's annual green-vehicle awards for this year, Tesla's Model S and Model X took the large car and SUV categories, respectively, while the Chevrolet Bolt and Volkswagen e-Golf were listed atop the subcompact and compact lists. The Lexus GS 450h hybrid and the Ford F-150 took home AAA's best green vehicle in the midsize and pickup truck categories. Related Video: