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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.

Audi debuts all-new R18 E-Tron Quattro with novel secondary hybrid system

This is the new Audi R18. It looks like the Bond villain of race cars (it has red running lamps), and if Audi's past is any indication, it'll prove difficult to beat in the LMP1 class of the 2014 World Endurance Championship.
The car's full name is the Audi R18 E-Tron Quattro, just like last year's car. Also like last year's car, the new R18 draws its power from a V6 turbodiesel, which powers its rear wheels, and Audi's E-Tron hybrid system, which runs its front axle. Unlike last year's car, though, this R18 has a secondary hybrid system. Audi has fitted the V6 with an electric turbocharger and figured out how to capture waste heat generated when the engine reaches its boost limit. That power can then be stored and fed back into either the turbo or the front axle's hybrid system under acceleration.
There are a number of changes to the body on the new car, forced in large part by series regulation changes. The car is narrower, particularly at the front, but it's also taller. The front end is set off by a new wing, as part of a new WEC regulation. Audi seems quite pleased about this, citing an improvement in front-end downforce and a reduction in cost. Like Formula One, the WEC contenders now have to contend with a ban on the so-called blown diffuser, which forced exhaust gases over the diffuser, creating downforce. That's necessitated some changes from Audi, although as we have no rear shots of the car, we can't tell you what it looks like.

Audi readying diesel PHEV models for US and Europe

With the racing pedigree provided by the Audi R18 E-Tron Quattro, you'd be forgiven for thinking that the German king of Le Mans is capitalizing on the connection between its road cars and race cars at every opportunity. Maybe there's an entire range of Le Mans Editions for the automakers diesel-hybrid offerings, with perhaps Tom Kristensen acting as the brand's spokesperson for the technology in Europe. You'd be wrong, though, because despite the R18's overwhelming successes in endurance racing, Audi the road-car manufacturer doesn't offer a single diesel-hybrid production car.
This factoid will hopefully be as short lived as it is disappointing, though, as a diesel-electric is around the corner, according to the brand's tech boss, Ulrich Hackenberg. In fact, it gets better than a mere diesel-hybrid; it will be a plug-in diesel-hybrid, only the second to hit the market, alongside the European-market Volvo V60.
According to Hackenberg, the new tech will be the result of a marriage between the brand's well-received 3.0-liter, TDI V6 with an electric motor. The next-generation Audi Q7 (shown above) will be the initial recipient, confirming previous reports that claimed a PHEV TDI could come to the next-gen CUV. Its MLB architecture, meanwhile, would allow the plug-in-hybrid-diesel powertrain to be fitted easily enough to the A8 luxury sedan. While the new Q7 should hit the market at some point in 2015, it's unclear when the PHEV TDI model could see the light of day.