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Audi Sport plots ambitious growth for RS lineup

Audi Sport is set to double its range of high-performance, RS-badged vehicles, reports Autocar. In an interview, Stephan Winkelmann, head of Audi Sport, revealed plans to add eight RS models to its lineup by early 2018. Winkelmann didn't reveal which vehicles would get the RS treatment, but said that "it is better to under-promise and over-deliver." Audi has several RS-badged cars, including the RS7, RS6 Avant, TT RS (both in its hard-top and soft-top variant), RS Q3, and RS3 (some of which are sold in the US). Autocar believes that the A1, A4, and Q5, along with the R8 are next in line to get the RS treatment in some markets. With Mercedes-AMG selling more vehicles, 80,000 units over the past few years, according to Autocar, it makes sense for Audi Sport to follow closely behind with a similar idea. While Mercedes is placing the AMG badge on its vehicles to bridge the gap between its high-performance and lower end models, Audi Sport says it's taking a different tactic. "We are not going to do what they do," Winkelmann said. Even without the extra vehicles, Audi RS sales could top 20,000 units this year, reports Autocar, with Winkelmann stating that the brand would experience "double-digit growth this year." Hopefully, Audi Sport's decision to add more RS models will result in some of those high-performance cars coming to the US. Related Video: Featured Gallery 2018 Audi RS3 Sedan: Paris 2016 View 15 Photos News Source: AutocarImage Credit: Live photos copyright 2016 Drew Phillips / Autoblog Audi Convertible Coupe Wagon Performance Sedan

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 spotted testing new S4 at the Nurburgring

Where there's smoke, there's fire. Only in this case, the smoke is the upcoming new Audi A4, and the fire is the S4 spotted undergoing testing in this latest batch of spy shots. Snapped in both sedan and Avant wagon forms while undergoing testing on and around the Nurburgring – where else? – the next-generation Audi S4 will of course be based on the new A4 that's anticipated to debut in Frankfurt this September. That means MLB Evo architecture and styling that takes a page out of the new TT's playbook. But in S4 trim, it'll be altogether more performance oriented. Expect an even more powerful version of the outgoing model's 3.0-liter supercharged V6, pumping out a good 340-350 horsepower to all four of its driven wheels. That power will help it keep pace with the new Mercedes C450 AMG Sport. It won't have to take on the new C63 AMG directly, though, as that'll be the job of the next RS4 that will slot above it. But since that model may never make it to US showrooms, this will stand as the flagship of the new A4 family as far as the American market is concerned. Related Video: