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Why we can't have better headlights here in the U.S.

It wouldn't be a European auto show if we weren't teased with at least one mainstream vehicle we can't have here. At the Geneva Motor Show last week, the small but vocal contingent of shooting-brake buffs lamented that the Mazda6 wagon won't be coming to our shores, although they can take comfort in the fact that the vehicle won't get the torquey 250-horsepower 2.5-liter turbocharged gasoline engine we'll get here. Mercedes-Benz also announced a new headlight technology in Geneva that likely won't be available here anytime soon. It's just the latest in a long line of innovative and potentially lifesaving front-lighting solutions that the federal government doesn't allow in this country due to outdated standards — and a current lack of leadership at the U.S. Department of Transportation. Mercedes-Benz's new Digital Light system that debuted in Geneva uses a computer chip to activate more than a million micro-reflectors to better illuminate the road ahead. The Digital Light headlamps works with the vehicle's cameras, sensors and navigation mapping to adjust lighting for the given location and situation and to detect other road users. The Digital Light technology also serves as an extended head-up display of sorts by projecting symbols on the pavement ahead to alert drivers to, say, slippery conditions or pedestrians in the road. And it can even project lines on the road in a construction zone or through tight curves to show the driver the correct path. Digital Light will be available on Mercedes-Maybach vehicles later this year, although like any technology it's bound to trickle down to less expensive vehicles. That is, if we ever get it here in the U.S. Audi, a leader in automotive lighting, has repeatedly run into snags trying to bring state-of-the-art car headlights to the U.S. The German luxury automaker's recently introduced matrix laser headlight system, which performs many of the same trick as Mercedes-Benz's Digital Light, also isn't legal on U.S. roads. And five years after the introduction of its matrix-beam LED lighting, which illuminates more of the road without blinding oncoming motorists with brights by simultaneously operating high and low beams, Audi still can't bring that technology to the U.S. either.

2016 Audi A6 First Drive [w/video]

The Audi A6 could be seen as a singular kind of sleeper. It sells in volumes that are one-half to one-third those of its German competition. The sedan doesn't command a conversation much less the imagination, its history bereft of iconic brand identifiers. Think of the way the E28 BMW 5 Series turned the segment into something to be proud of, or those double headlamps from the W210 Mercedes-Benz E-Class, or that other E from 1986 simply known as Der Hammer. There is currently no RS6 sedan in the US to draw halo attention to the clan. And it was the first in its segment to slip into a design lassitude such that you had to check the badge to make sure it wasn't a different Audi. However, I look at the A6 from the other side: it's an underappreciated gem. With the 3.0-liter supercharged V6, it's a thoroughly fun steer. It has more power and torque than the competition. I think it has the finest interior. It's probably my favorite sedan in the segment considering how many boxes it checks before you cross the bridge to things that begin with S, M, and AMG. But you have to get to know an Audi in order to comprehend what it possesses, and the "product improvement" rolled out for the 2016 A6 won't change that. I'll call these "blind spot updates," because someone needs to point out where they are, and even then you've got to work to see them. Nevertheless, they're there, in places like the wider grille, new headlights and taillights with revised LED DRL signatures, new bumpers, side sills, rockers, and trapezoidal tailpipe finishers. The interior and driver assistance systems get gussied-up. The interior and driver assistance systems get gussied-up, too. The base A6 2.0T can be had with driver aids now – Audi pre-sense comes standard, the night vision assistant will identify animals, and the blind spot monitor works with lane keep assist to give you even more warning before changing lanes. There are two new colors and new inlays, like the layered walnut on the tester I drove, which is an upper-tier luxury feature that's finally filtered downstream. The biggest interior rework comes via the MMI system, which gets the Nvidia Tegra 3 quadcore chip pushing graphics to a retractable, eight-inch touchscreen. The additional processing power allows for new features like expanded codec playback – you can now play uncompressed .flac files straight through the stereo.

VW fix would have cost $335 per vehicle

Since the Volkswagen diesel kerfuffle began, Bosch, the world's largest auto supplier, has been hooked up to a bullhorn trying to make sure everyone knows its side of the story. Bosch supplied VW with the engine management testing software, including delivery and metering modules, that VW then used to skirt emissions laws in the US. Bosch told VW in 2007 that it was illegal to use the software in cars it planned to sell yet VW did it anyway, according to reports coming out in German newspapers Bild am Sonntag and Frankfurter Allgemeine Zeitung. That first warning came two years after VW started developing the small-displacement diesel, around the time that the two men pushing its development, then-brand chief Wolfgang Bernhard and engineer Rudolf Krebs, were telling their superiors that the engine needed AdBlue urea injection to pass US emissions. VW cost controllers wouldn't approve the AdBlue solution because it would add 300 euros ($335 US) to the cost of the vehicle. Bernhard and Krebs left the same year that Bosch advised VW about the software, two years before the engine went into production. That's when things get cloudy. A report in Automotive News says that when Martin Winterkorn took over in 2007 as head of the VW Group and brand, he asked Ulrich Hackenberg and Wolfgang Hatz to keep working on the engine, and "[the] engine then ended up in VW Group diesels" with that problematic software still intact. No one has yet pointed any fingers at this latter chain of command, but like a game of Clue, right now they're the professors in the library holding the candlesticks. Warnings didn't only come from the supplier: Frankfurter says VW's initial investigation has found that an engineer issued the same caution to the company in 2011. Neither Bosch nor VW would comment on the reports.