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CARB has 20 days to confirm VW's 3.0-liter TDI emission fix

VW's diesel scandal has been in the headlines since last September, but solving the problem it proving difficult. Volkswagen Group has submitted a proposal to the California Air Resources Board (CARB) and the Environmental Protection Agency (EPA) to fix about 85,000 vehicles with the 3.0-liter diesel V6 in the US, Reuters reports. CARB now has 20 business days to test if the plan actually reduces emissions. If accepted, VW could finally begin a recall and end the stop sale on vehicles with these engines. In a statement, CARB pledged to, "respond following a thorough and complete review to make sure the plan addresses the presence of the illegal defeat device and follows the necessary environmental, vehicle and public health and safety regulations." Neither CARB nor the EPA outlined the proposed repairs, but Porsche CEO Oliver Blume already suggested the fix for the engine in the diesel Cayenne. Examples from 2013 and 2014 allegedly need a new catalytic converter and software update, and those from 2015 and 2016 only need the improved code. It's not yet clear whether this procedure would work for all models with the 3.0 TDI. While the EPA issued the notice of violation against VW's 2.0-liter four-cylinder diesel in September, the first one for the 3.0-liter V6 came in early November. By the end of the month, the agency broadened the scope to about 85,000 vehicles, including some examples of the VW Touareg, Audi A6, A7, A8, Q5, Q7, and Porsche Cayenne. The affected companies issued stop sales on new models with the engine. Audi eventually admitted to regulators that it didn't disclose three auxiliary emission control devices in the powerplant's code and promised to develop a software update to fix the problem. CARB gave the automaker 45 business days to submit the proposed solution. If accepted, this repair would allow VW Group to end part of the emissions scandal, but there's no guarantee the regulators consent to this solution. Just a few weeks ago, CARB looked at the automaker's plan to fix the 2.0-liter TDI and rejected it, claiming a lack of detail.

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.

2017 Audi Q7 First Drive

Automotive evolution rarely makes a great leap, instead creeping along from new model to new model at a predictable pace. Audi's new Q7, though, is like handing a Bic lighter to a Cro-Mangon man smashing rocks. In Europe the new version drops 700 pounds, almost enough to reclassify its species. Audi's fire-machine will arrive in America in early 2016, as a 2017 lighter model. We spent some time in the Swiss Alps flicking the 2017 Audi Q7. As far as revolutions go, the 2017 Q7 certainly looks new. It resembles a tall station wagon more than ever, at least in European trim. A little tweaking of the design wand has left the rear end boxy and angular. Our test models use an adaptive air suspension, and the the "all-road" setting lifts the Q7 about an inch, to the normal ride height for US models. Thus raised, the big Q looks more like an SUV. This Q7 represents the first of the Volkswagen Group's MLB-platform cars. Lighter and said to be more dynamic, MLB will underpin everything from the next-gen A4 to performance and luxury SUVs like the Porsche Cayenne, and Bentley Bentayga. With the structural improvements comes a diet heavy in aluminum, the prime reason for the previously-mentioned weight savings. When outfitted for our content and crash-safety specification, US-bound models will still be about 500 pounds lighter than before. But dramatic weight-savings isn't the Q7's only trick. The adaptive air suspension significantly changes the character of the Q7, especially in the sportiest Dynamic model. There's an optional all-wheel steering feature that improves turning radius, and helps with high-speed stability. This is not to be confused with Audi's Quattro all-wheel drive, which along with a panoramic sunroof and seven seats, comes standard on all stateside models. Under the hood, things aren't so different. Both available engines are reworked but largely the same. The supercharged 3.0-liter gas engine still makes 333 horsepower and 325 pound-feet of torque, but it's not as thirsty as it used to be. Expect a two or three mile-per-gallon bump once official EPA ratings arrive. That engine, as well as Audi's reworked 3.0-liter V6 TDI – good for 260 hp and 443 lb-ft once outfitted for the US – are mated to the ubiquitous ZF eight-speed transmission. The Q7's driving character greatly depends on where it is pulling power from. While the diesel model is capable, turbo lag cuts back on the satisfaction we normally derive from oil burners.