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Mercedes-AMG GT3 thunders into Geneva debut [w/video]

Mercedes-Benz took the opportunity to debut its replacement for the SLS AMG GT3 at the 2015 Geneva Motor Show today, showing off the new AMG GT3. Unlike the road car on which it's based, Mercedes ditched the turbocharged V8 for its awesome 6.3-liter V8, which also powered the GT3's predecessor. That's far from the only change found for the racing variant of the new model, however. Mercedes conducted a serious overhaul of the car's aerodynamics, fitting a huge rear wing and an equally enormous front splitter. The front bumper is also home to a quartet of winglets, which add even more downforce to the front end. As we suspected in our original post on the GT3, the rear of the car has been fitted with a none-too-subtle rear diffuser. The cooling needs of the track have also been enhanced, courtesy of large ducts on the fenders and a deep vent in the hood, while meaty slats sit over the front wheel wells. In addition to the rear diffuser, large ducts have been fitted to both sides of the rear bumper. The AMG GT3 looks like a compelling offer in the world of customer racers, although we won't know that for certain until it hits the track for some competition. That should be later this year at the earliest, as Mercedes is targeting late 2015 for the first customer deliveries. Check out our live gallery of images of the new AMG GT3, direct from the floor of the 2015 Geneva Motor Show. World premiere in Geneva for spectacular AMG racing car All-out attack : the new Mercedes-AMG GT3 Affalterbach. Mercedes-AMG will ring in the 2015 motorsport season at the beginning of March with the sonorous sound of the V8 engine: the new Mercedes-AMG GT3, with which the Mercedes-Benz sports car and high-performance brand is systematically expanding its motorsports presence, will be making its debut appearance at the Geneva Motor Show. Developed to comply with the FIA's GT3 race rules, the racing car will compete in the world's most hotly contested customer race series. Cutting-edge racing technology and spectacular design predestine the new challenger for victories. The new GT3 is based on the Mercedes-AMG GT, which is being launched in just a few days' time. Following an intensive test phase, the new AMG racing car will be shipped to the first customer teams at the end of 2015. The Mercedes-AMG GT3 will blaze new trails in customer sports with its intelligent vehicle concept.

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.

Renault-Nissan rejig how they manage Daimler partnership, sources say

PARIS — The Renault-Nissan-Mitsubishi alliance is set to scrap a role overseeing ties with Daimler in favor of individual relations with the German group, three sources told Reuters, as they try to better manage a partnership that has not met initial hopes. The shift comes as alliance-level executive Jacques Verdonck, who was in charge of the cooperation with Daimler, retires at the end of the month, the sources familiar with the matter said. France's Renault will instead rely on its head of partnerships, Sandra Gomez, while Nissan will do the same with Catherine Perez. Mitsubishi will also have a person in charge of partnerships, the sources said, adding the bilateral approach was in line with the new "leader-follower" strategy of the alliance. That involves leaning on the strengths of each carmaker in certain areas. Renault and Daimler declined to comment, while Nissan could not immediately be reached for comment. The plan marks another shift following the end of the Carlos Ghosn era at the alliance. The architect of the Franco-Japanese partnership, who also extended the collaboration to Daimler, was arrested on financial misconduct charges in Japan in late 2018, before fleeing to Lebanon in 2019. He denies any wrongdoing. His exit strained already difficult relations between Nissan and Renault, which are now working to get back on track with cost-saving joint production projects among other steps. The partnership with Daimler - which owns high-end brand Mercedes-Benz, contrasting with the more accessible models produced by the others - has also looked in danger of losing steam. Nissan and Renault, both hit by losses, recently sold down their stakes in the German group. Collaborations on Renault's compact Twingo car and Daimler's Smart model are set to end, and some targets for industrial cooperation have been downgraded over the years. But Daimler still has a factory in Mexico with Nissan, and has been exploring the possibility of jointly developing at least one large van model with Renault. An industry shift towards electric vehicles could yet yield other opportunities, one of the sources said. "The collaboration with Daimler is at present made up of Renault-Daimler projects, Nissan-Daimler ones and some between the three," another of the sources said, with yet another saying that the changes reflected a more pragmatic approach.