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Ford Mustang Mach 1 Spied, Audi debuted the 2017 TT RS in Beijing | Autoblog Minute

A quick recap of some of the weeks hottest stories. Eddie Sabatini reports on this edition of Autoblog Minute Weekly Recap. Audi Ford Autoblog Minute Videos Original Video mach 1 ford mustang mach 1

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.

Daily Driver: 2015 Ford Flex

The Ford Flex has been around. It's not T-Rex or even Model T old, but still; it's been hauling people and stuff since 2008 without a major redesign. That's quite a long time in the car world. Sales have been sliding the last couple of years, and the Flex is now considered a niche player in the crossover-centric US auto market. But that doesn't mean it's still not a pretty good vehicle for its purpose: If you need to haul people and stuff, there are few better choices. Some even think it's a guilty pleasure. I spent a winter afternoon tooling around suburban Detroit in a handsomely equipped Flex Limited. We're talking the 3.5-liter EcoBoosted V6 with 365 horsepower and all-wheel drive. Inside, there were big comfy seats, lots of leather, acres of storage space and even a built-in refrigerator. The drive ended up being surprisingly fun. If there's such a thing as a hot-rod minivan, this is it. I also got noticed. The Flex's boxy design has aged well. It's still polarizing, but there aren't many contemporary vehicles that look like a Flex. So if you've ever seen a Flex on the road, and thought: "Man, that thing is big. I wonder what it's like to drive that?" Now's your chance to find out.