2013 Mercedes-benz G-class Amg Designo on 2040-cars

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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.

Mercedes-Benz teases SL-Class for LA Auto Show

There's no better place in the world to unveil a styling update for the Mercedes-Benz SL-Class than at the upcoming Los Angeles Auto Show. The luxury droptop's combination of handsome style, big power, and a huge price tag also makes it a perfect fit for stylish, wealthy Southern California. Mercedes is getting us excited to see the rest of the SL's facelift thanks to this shadowy preview. We can spy a redesigned hood in the image above, and it's smoother and simpler than the current design. You can also spot the restyled headlights at each corner that seem thinner than the present units. The updated bumper now features four inlets: one on each side and a double-decker one in the center. Spy shots from earlier this year suggest even more updates for the refreshed SL, like a new rear bumper and redesigned exhaust tips. Keep an eye out for possible improvements to the infotainment system and other interior upgrades. The 2015 LA Auto Show begins in about a week, so we won't have to wait long to see all of Mercedes' tweaks. Related Video:

2016 Mercedes CLA and GLA get more power, quicker

Unlike in Europe, Mercedes-Benz doesn't have hyper hatches like the Audi RS3 to compete against in North America, at least not yet. However, the company isn't letting its high-performance compacts get behind the times anywhere in the world with the announcement that the CLA45 AMG and GLA45 AMG in the US are getting practically the same raft of upgrades as the ones across the pond. Both models go on sale in October in US dealers. Like its European counterpart, the 2.0-liter turbocharged four-cylinder in the diminutive AMGs receives upgrades to produce 375 horsepower and 350 pound-feet of torque (the 381 hp rating over there is in metric ponies). That's an impressive 20-horsepower and 18 lb-ft bump over the current version of the mill. Beyond just the boost in output, quicker acceleration comes from revised, more aggressive ratios in third through seventh gears. The latest AMGs make great use of their upgrades, too. The 2016 GLA45 now clocks the run to 60 miles per hour in 4.3 seconds, a staggering half-second quicker than the 2015 model. The CLA45 slices 0.3 seconds off its time to make the sprint in 4.1 seconds, which gives the sedan the same acceleration as a SL63 AMG. In addition to the powertrain tweaks, the 2016 models get a few other added luxuries. As in Europe, they receive the Dynamic Select System that uses a rotary knob select from multiple driving modes. Inside, there's standard keyless start, dual-zone climate controls, and Mercedes' latest infotainment unit. A "Turbo 4Matic" badge on the fender now hints at the vehicles' performance potential. The new Dynamic Plus Package is the major addition to the options list. It combines a limited slip differential at the front, AMG Adaptive Suspension, Race Mode, Performance Steering Wheel, and pushes the top speed to 167 mph. At the same time, the AMG Driver's Package is discontinued, and the AMG Performance Studio Package is dropped on the CLA45. Related Video: