2014 Ford F150 Xlt on 2040-cars

Auto blog

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 spotted testing new Fiesta RS hot hatch

There's a lot to love about Focus ST and Fiesta ST, but if neither of those is enough for you, we've got good news: Ford has even more potent RS versions of both in the works. The Focus RS we already saw last month, but here we have our first spy shots of the smaller Fiesta RS undergoing testing. Spotted alongside still-camouflaged prototypes of its big brother, the new Ford Fiesta RS is wearing a modified front end, flared fenders packing a wider track and a revised rear-end. The beefed-up bodywork is all well and fine, but we're looking forward to finding out what's underneath it all. Sources point towards a 250-horsepower version of Dearborn's 1.6-liter EcoBoost turbo four, along with upgraded brakes and suspension. The big question, though, is whether the production Fiesta RS will pack the new performance all-wheel-drive system from its larger counterpart, or stick with front-drive and some sort of clever diff. It may be too early to tell, as this pocket rocket is likely a good year away from its debut, but in the meantime you can scope out the spy shots in the slideshow above for a taste of what's to come. Related Video:

Ford Ranger-based 7-seat SUV spotted testing

Ford looks to be working on a new SUV version of its global Ranger pickup truck. An early prototype of a seven-passenger SUV based on the Ranger has been spotted testing in Australia, and word has it buyers in the region could expect to see the model in showrooms as soon as 2014, where it could sail under the Endeavour or Everest badges. Ford Australia currently sells the Territory SUV, so there's some chance that this model could be a successor to that throne, as well.
Whatever it's called, the long-roof Ranger will feature a shorter wheelbase and more ground clearance than its pickup twin, giving the machine a bit more off-road functionality. (And here we thought we couldn't want the global Ranger any more than we already do.) While this particular vehicle sports a Territory back half grafted onto a Ranger front end, odds are a public reveal of the finished product could occur as soon as the second half of 2014, making it a 2015 model. Head over to Carsguide.com.au for a closer look.