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Autoblog Podcast #387

Episode #387 of the Autoblog podcast is here, and this week, Dan Roth, Steven Ewing and Michael Zak talk about more General Motors recalls, upgrades and a diesel for the 2015 Ford Focus ST, and the BMW M235i scoring ahead of the Porsche 911 and Chevrolet Corvette Stingray in Consumer Reports testing. 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 #387: The video meant to be presented here is no longer available. Sorry for the inconvenience. Topics: GM recalls 8.4M more cars in North America Ford Focus ST upgrades and diesel CR says M235i is better than 911 In the Autoblog Garage: 2014 Jeep Grand Cherokee EcoDiesel 2014 Honda Accord Coupe V6 6MT Long-Term 2015 Subaru WRX 2014 Subaru XV Crosstrek Hybrid Hosts: Dan Roth, Steven Ewing, Michael Zak Runtime: 01:35:26 Rundown: Intro & Garage - 00:00 GM Recalls - 26:26 2015 Ford Focus ST - 41:56 BMW M235i - 50:24 Q&A - 59:16 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 Government/Legal Podcasts BMW Ford GM Honda Jeep Subaru Safety Diesel Vehicles Performance bmw m235i

Ford finds flex-fuel engine design plays big role in emissions output

How bad is ethanol for your engine? There's been a lot of debate on this issue as the US considers upping the biofuel content in the national gasoline supply from 10 percent (E10) to 15 percent (E15). The ethanol industry and some scientists say higher ethanol blends show no "meaningful differences" in new engines while the oil industry says ethanol creates health risks. Researchers working at the Ford Research and Innovation Center decided to take a closer look at how a wide range of gas-ethanol blends - E0, E10, E20, E30, E40, E55 and E80 - affected the emissions coming out of a flex-fuel 2006 Mercury Grand Marquis. To see the full report, printed in the journal Environmental Science & Technology, requires payment, but there is an abstract and Green Car Congress has some more details. The gist is that, "with increasing ethanol content in the fuel, the tailpipe emissions of ethanol, acetaldehyde, formaldehyde, methane, and ammonia increased." At least NOx and NMHC emissions decreased. The researchers say that the effects are due to the fuel and "are expected for all FFVs," but that the way that a manufacturer calibrates the engine will affect NOx, THC, and NMOG emissions. It's this last bit that's important, since the researchers found, "Higher ethanol content in gasoline affects several fundamental fuel properties that can impact emissions. ... These changes can have positive or negative effects that can depend on engine design, hardware, and control strategy. In addition to direct emissions impacts, higher ethanol content fuel can also provide more efficient combustion and overall engine operation under part-load conditions and under knock-limited higher-load conditions." So, as we head towards more ethanol in our fuel supply (maybe), manufacturers are going to need to learn how to burn it most efficiently.

Ford exec reveals new F-150 Raptor packs 450 horsepower

Between the new GT supercar, Shelby GT350R muscle car and F-150 Raptor off-roader, Ford had quite the array of performance machinery on display at the Detroit Auto Show earlier this month. One thing it didn't reveal about any of the three, however, is how much power they'd pack, but a senior executive at the Blue Oval automaker has reportedly let the cat out of the bag when it comes to the Raptor. During a televised interview during the Rolex 24 at Daytona this past weekend, Ford's product development chief Raj Nair is said to have revealed that the new F-150 Raptor will offer 450 horsepower. That's pretty impressive from a 3.5-liter turbocharged V6, and would put the new Raptor out ahead of the 411 hp produced by the 6.2-liter naturally aspirated V8 in the previous SVT Raptor. That doesn't give us the whole picture, though, because in a vehicle this big especially, torque will play a huge factor. The outgoing Raptor offered 424 pound-feet of twist, and the existing 3.5-liter EcoBoost engine is already producing 420 lb-ft – so it seems fairly safe to assume the new Raptor will eclipse those figures as well, but we'll have to wait for official word to find out for sure. Related Video: