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GM's MPG overstatement could affect 2 million vehicles

Late last week, GM admitted that three of its large SUVs fuel economy window stickers did not match their actual efficiency ratings, and so the vehicles couldn't be sold. The stickers on the 2016 Chevy Traverse, GMC Acadia, and Buick Enclave said their ratings were one to two miles per gallon better than they should have been. Officially, the number of affected vehicles sits at about 60,000. But Consumer Reports makes a good point: what's up with all of the previous model year SUVs that are basically the same vehicle? To wit: the 2016 model year vehicles are not substantially different than the 2015 or the 2014, or even going all the way back to 2007. On the EPA's fuel economy website, all of these older models will "have better stated fuel economy numbers than the new vehicles in GM's dealerships," Consumer Reports noted. CR's best point, and the one that makes the 60,000 number potentially grow to 2 million if all of the vehicles built on this platform are affected, is that "[i]t seems unlikely that the company would change the powertrain on these carryover models so late in their model cycles in a way that would cause a dramatic, negative impact on fuel economy." GM says that earlier model year SUVs are not affected and the EPA did not respond to CR's question about the potential for more discrepancies. We've seen automakers reverse course before, so if GM has to come out with a mea culpa soon, don't be surprised. GM is rushing corrected stickers to dealers so that the SUVs can be sold again, but a fix for the already-sold vehicles could be trickier to solve. Related Video: Related Gallery 2013 GMC Acadia View 16 Photos News Source: Consumer Reports Government/Legal Green Buick Chevrolet GMC Fuel Efficiency mpg gmc acadia chevy traverse

Automakers' sound systems: Crank it, don't yank it

Years ago, one of the first things most music lovers did after buying a new vehicle was drive to an aftermarket stereo shop to get the crappy stock components swapped for better gear. And you'd typically get not only better sound but also more bang (and boom) for your buck. But in the past decade or so, the overall quality of OEM audio has dramatically increased, while car electronics became more complex, removing the incentive for most new vehicle owners — and all but the most hardcore DIYer — to start from scratch. In 2010, I did a comparison of the average costs for OEM electronics vs. similar offerings from the aftermarket, and back then automakers' stock premium systems were by far the best bargain — and are probably an even better value now. The premium 14-speaker, 1,200-watt JBL system in the all-new 2019 Toyota Avalon is a prime example of this trend. It's standard on the top two Limited and Touring trims and is available as a $680 audio upgrade on the XLE and XSE. I doubt you can even buy 14 speakers and 1,200 watts of amplification from the aftermarket for 700 bucks, much less have it all installed. And because the system is bundled with Toyota's Entune infotainment system, Apple CarPlay and a surround-view camera, removing the head unit means you would likely lose these features. Another advantage of OEMs and their audio partners is they can design the car around the audio system. In the past, automakers would typically place speakers where convenient for packaging, not for optimal sound reproduction, and audio engineers were forced to compromise. But as with the Avalon's premium JBL audio system, this is starting to change. At a recent behind-the-scenes peek for media into the process of developing the system, Toyota and Harman engineers delved into the minutia of sealing the inner panel of the front doors to create an enclosure for 6x8-inch woofers, making space in the pillars for JBL horn tweeters and extensively measuring the acoustic properties of the interior to tune the sound to the space. I'm met some creative and skilled car stereo installers, but none with a degree in psychoacoustics. The system is also the first to feature Quantum Logic Surround that creates a multi-channel listening experience from two-channel sources. And it includes Harman's Clari-Fi processing that "rebuilds key details lost" in compressed audio formats used by streaming music services and MP3s.

2017 Buick LaCrosse gets Avenir-inspired tease

Stylish touches from the beautiful Buick Avenir Concept are actually hitting the road on the front end of the new 2017 LaCrosse. The brand is showing off this single teaser of a more angular grille surround than what is currently seen on its lineup. In the center there's a three-color version of the well-known Tri-Shield badge. Chrome wings meet at the logo, and vertical chrome bars lead the eye up over the body. A version of this design is eventually becoming part of the entire Buick lineup by 2018. Debuting at the 2015 Los Angles Auto Show in November, the future LaCrosse rides on stronger, lighter underpinnings than the current model. It also gets a five-link rear suspension. The company promises that the changes mean a more engaging drive from the sedan. "The Avenir concept shattered expectations of what a Buick could be and the 2017 LaCrosse promises to do the same," Duncan Aldred, vice president of Buick, said in the release of the teaser image. The show car's look was highly praised by critics when it debuted at this year's Detroit Auto Show. The Avenir even won Eyes on Design awards for Best Designed Concept Vehicle and Innovative Use of Color, Graphics, and Materials. Related Video: Buick Previews All-New 2017 LaCrosse Expressive, Avenir-inspired design cues introduce the new face of Buick DETROIT – Buick today confirmed the all-new 2017 LaCrosse, with a preview of its Avenir concept-inspired design cues. A striking evolution from current Buick models, LaCrosse features a grille design that puts a new face on the brand, including a new, three-color tri-shield insignia set on a wing-shaped element. Contrasting with darkened waterfall grille bars and spanning the width of the opening, it connects the grille and headlamps, and emphasizes LaCrosse's new sculptural surfacing. The design was introduced on the Avenir concept and was inspired by the 1954 Wildcat II concept. It's a face all Buick models will adopt by 2018. "The Avenir concept shattered expectations of what a Buick could be and the 2017 LaCrosse promises to do the same," said Duncan Aldred, vice president of Buick. "Its expressive design represents a break from convention and highlights the progressiveness in all new Buick models." The next-generation LaCrosse's design is framed on an all-new chassis that is stronger yet lighter than the current model and serves as the foundation for a more dynamic driving experience.