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Autoblog Podcast #344

Doug DeMuro from Plays With Cars, Infiniti Q50, Subaru BRZ STI, Porsche Macan
Episode #344 of the Autoblog podcast is here, and this week, Dan Roth and Executive Editor Chris Paukert are joined by Doug DeMuro, author of Plays With Cars and prolific internet autowriting presence. Topics include the latest spy shots of the Porsche Macan, the 2014 Infiniti Q50, and the teaser images we've recently seen of a Subaru BRZ wearing STI badges. As always, we start with what's in the garage and finish up with some of your questions. For those of you who hung with us live on our UStream channel, thanks for taking the time. You can follow along after the jump with our Q&A. Thanks for listening!
Autoblog Podcast #344:

To solve diesel problem, VW might need two fixes

Volkswagen says that a fix is on the way for its 11 million vehicles around the globe that are equipped with diesel engine software that can evade emissions tests. The problem might be far more complicated than simply creating a single solution for all of them, though. According to Automotive News citing Reuters, two remedies to cover different NOx-reducing systems could be necessary, and both potentially affect performance. Earlier examples of the EA 189 diesel engine used a lean NOx trap to reduce the harmful material coming from the tailpipe. According to experts in the Automotive News report, a software update might allow the engines to achieve compliance, but that could affect fuel economy. VW already tried this route once before the scandal came to light, but tests by the California Air Resources Board still showed the figures were too high. Later, some of the 2.0 TDI engines began using Selective Catalytic Reduction that reduced NOx by injecting a urea solution into the exhaust stream. According to Automotive News, a software update for this equipment might increase the amount of the substance used. Not only would that mean topping up the fluid more often, but there still could be some reduction in fuel economy. But, since the 2-liter, 4-cylinder TDI engine that sits inside the diesel vehicles first mentioned as being affected by the issue in the US don't have a urea treatment system, VW would need to install them into these cars. VW still hasn't officially outlined its solution (or solutions) to the emissions issue but is expected to soon. The automaker's long-term evasion of regulations with these diesel engines pumped vast quantities of additional NOx into the air. The substance is known to be linked with smog and acid rain. The US Department of Justice is already beginning an investigation into the company, and politicians are pushing for harsh punishments.

Audi A3 Cabriolet leaked ahead of Frankfurt

Leaked images of the new Audi A3 Cabriolet have emerged ahead of the compact droptop's debut at next week's Frankfurt Motor Show. Audi has sold a convertible A3 in Europe since 2008, although that car has never made it to the US market. Still, with Audi already bringing an A3 and S3 sedan across the pond, there's hope for this small convertible to arrive here.
The looks of the A3 Cabrio aren't a huge departure from the A3 sedan, besides the obvious deletion of rear doors. We can't tell from the images shown, but considering Audi still hasn't brought a folding hardtop to market, we don't imagine it'll start with an entry level model like the A3. Expect a fast-folding canvas roof, much like the A5 Cabriolet.
From the leaked images, we can see TFSI and Quattro badges on this A3. It seems natural that the Cabrio will sport the same range of four-cylinder engines as the sedan - a 2.0-liter TDI, a 1.4-liter turbo and a 2.0-liter turbo. Of course, we'll have much more on the new A3 Cabrio when it makes its debut in Frankfurt.