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Xcar drives the Mercedes-AMG C63 S

The transition among Europe's high performance vehicles from naturally aspirated power towards turbocharging has taken time but has shown constant progress. The march seemingly started with hot hatches when models like the Volkswagen GTI quit adding displacement and finally succumbed to forced induction. Now, the change has affected the higher rungs with the latest BMW M3 and possibly even all future Porsche 911s. Of course, the question arises does this shift really matter to the driving experience? Xcar Films aims to find while taking a spirited ride in the new Mercedes-AMG C63 S. One thing is for sure; the switch from the 6.2-liter V8 in favor of the new 4.0-liter twin-turbo doesn't seem to be hurting the Merc's sound. Even with forced induction, the exhaust still emits a very angry grumble. Find out from Xcar if the rest of the new engine's attributes stack up quite so well, though. Related Video:

Mercedes GLE-Class shows a new face for the luxury crossover in NYC

Segments don't get much hotter than luxury crossovers at the moment, and that makes for some perfect timing for Mercedes-Benz to unveil the GLE-Class at the 2015 New York Auto Show. As a replacement for the M-Class, the new model offers a more traditional looking alternative to the styling of its swoopy sibling, the GLE-Class Coupe. Mercedes' designers crafted a nose for the GLE that gives it a strong family resemblance to the Coupe, but the rest of the shape bears a chunky, more utilitarian appearance. Elsewhere, the new model sticks with the thick C-pillar and wraparound rear glass of the outgoing M-Class but with sharper edges for a slightly more muscular look. Stepping inside, occupants find all of the German luxury brand's latest styling cues. Mercedes is making a major commitment to adding more plug-in hybrids to its vehicles in the coming years, and the GLE is one step in that process. The lineup includes the GLE550e 4Matic that pairs a 3.0-liter, twin-turbo V6 with electric assistance to produce a total of 436 horsepower and 479 pound-feet of torque. The German brand isn't going entirely green, though, and the range also includes the Mercedes-AMG GLE63 and GLE63 S, powered by a twin-turbo 5.5-liter V8 that produces 550 hp or 577 hp, respectively. Check out the photos above from the show floor to get a full look at this upscale crossover before it arrives at dealers later this year.

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.