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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.

Autoblog Podcast #390

Episode #390 of the Autoblog Podcast is here, and this week, Dan Roth, Steven Ewing and Sebastian Blanco from Autoblog Green talk about the 2015 Ford Mustang specs, the 2016 Smart models, a proposal to add real-world numbers to EPA economy tests and the potential downside of autonomous cars. We start with what's in the garage and finish up with some of your questions, and for those of you who hung with us live on our UStream channel, thanks for taking the time. Check out the new rundown below with times for topics, and you can follow along down below with our Q&A. Thanks for listening! Autoblog Podcast #390: The video meant to be presented here is no longer available. Sorry for the inconvenience. Topics: 2015 Ford Mustang specs 2016 Smart FourTwo and FourFour EPA wants road tests The downside of autonomous cars In the Autoblog Garage: 2014 Nissan Leaf 2015 Audi A3 Sportback E-Tron 2014 Scion tC Hosts: Dan Roth, Steven Ewing, Sebastian Blanco Runtime: 01:33:35 Rundown: Intro and Garage - 00:00 Mustang Specs - 34:40 2016 Smart Models - 51:14 EPA Tests - 01:02:57 Autonomous Cars - 01:11:19 Q&A - 01:21:22 Get the podcast: [UStream] Listen live on Mondays at 10 PM Eastern at UStream [iTunes] Subscribe to the Autoblog Podcast in iTunes [RSS] Add the Autoblog Podcast feed to your RSS aggregator [MP3] Download the MP3 directly Feedback: Email: Podcast at Autoblog dot com Review the show in iTunes Podcasts Audi Ford Nissan Scion smart Electric Hybrid

Ford confirms launch of new Tourneo vans and Ecosport in Europe for Geneva

We've already seen plenty of what the Geneva Motor Show will have in store for us in less than two weeks, but most of the confirmed debuts that were announced so far have generally been luxury or performance cars. Ford, on the other hand, will be showing off a couple of its new family-friendly models for European buyers to enjoy.
On the larger side of things, the full range of Tourneo vans (shown above) will be on display, including the introduction of the new Tourneo Courier model, but Ford will also be showing off the all-new EcoSport crossover, which is based on the automaker's Global B platform and will be positioned beneath the Kuga, better known here as the Escape. The subcompact EcoSport was originally unveiled at the Beijing Motor Show last April.