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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.

Audi RS6 Avant and Mercedes-AMG E63 S drag race for Top Gear

Sometimes the kids are late for school, and you need a wagon to get them there in a hurry. In its latest drag race, Top Gear finds out which is the quicker high-performance family hauler: the Audi RS6 Avant or the Mercedes-AMG E63 S. The specs suggest this race should be quite close at the finish line. The RS6 has a 4.0-liter twin-turbo V8 with 552 horsepower, but the E63 S is a little more powerful with 577 hp from a 5.5-liter twin-turbo V8. However, the Audi has a traction advantage from the all-wheel drive system, whereas the Mercedes only spins its rear wheels. Pick your favorite, and then watch the video to see if the similar numbers translate to a photo finish in the real world. Related Video:

Mercedes-AMG GT and C63 to serve as F1 safety, medical cars

Mercedes has spent nearly 20 years providing the safety and medical cars for Formula 1, so it was hardly a shock when the company announced that the new Mercedes-AMG GT and C63 AMG S Estate would serve as ushers in the F1 circus. The two turbocharged monsters replace the old SLS AMG safety car and C63 AMG wagon medical car, which have served in one trim or another since 2010 and 2008, respectively. The biggest change for either car is, of course, the lightbar. It's been mounted atop a carbon-fiber hoop on the AMG GT that Mercedes says optimizes airflow to that big rear wing. Meanwhile, the location of the lights was confirmed via wind tunnel testing. In the cockpit, two iPads allow the AMG GT's passenger, fuel analyst Peter Tibbetts, to monitor the race's world feed while also keeping an eye on race data. The tablets stay connected via an in-car, wireless internet connection. Changes for the C63 S wagon are less extensive. It gets a lightbar and the usual signaling systems in the headlights and taillights, while the cargo compartment includes both a respirator and a defibrillator, to manage more serious medical emergencies. As with the AMG GT, the C63 is finished in F1's traditional silver safety/medical car livery. Beyond these changes, both vehicles are just as potent as those that can be purchased at dealers. Both cars feature a 4.0-liter, 510-horsepower, twin-turbocharged V8, while a seven-speed AMG Speedshift transmission dispatches the grunt with lightning-quick shifts. So equipped, the AMG GT will hit 60 in 3.8 seconds and the C63 can get there in 4.1 seconds. Check out the full gallery of both cars, decked out in their F1 liveries, available up top. Related Video: Mercedes-AMG GT S and C 63 S in action for the 2015 Formula 1® season: Maximum safety, maximum performance Affalterbach, Mar 06, 2015 Baptism of fire on the race track: The GT S and the C 63 S – the new high-performance cars from Mercedes-AMG - provide for maximum safety in the 2015 FIA Formula One World Championship™. At the first Grand Prix in Melbourne, Australia (12 to 15 March 2015) the GT S will debut on the race track as the Official Safety Car of the FIA Formula One World Championship™. As the Official Medical Car of the FIA Formula One World Championship™, the C 63 S Estate will be on hand to provide fast emergency medical care. Mercedes-AMG has been active continuously at the pinnacle of motorsport since 1996.