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Audi S1 rally car races its RC counterpart

Veteran racer Mattias Ekstrom campaigns the meanest looking Audi S1 on the block in the FIA World Rallycross Championship. With a 2.0-liter turbocharged four-cylinder pumping out a claimed 600 horsepower and all-wheel drive, this little hatch can reportedly hit 60 miles per hour in a wickedly quick 1.9 seconds. While those specs are mighty impressive, they don't really matter too much for Ekstrom's latest race in the S1 against a pint-sized doppelganger in the form of an RC replica of the rallycross machine around a warehouse. Despite, the massive gulf in size and power, the two Audis appear fairly evenly matched. The RC version can't quite match the real one in outright speed but can go under obstacles that Ekstrom's S1 is forced to drive around. Check out the clip above to see which S1 makes it to the finish first. Related Gallery EKS Audi S1 Supercar News Source: Audi Deutschland via YouTubeImage Credit: Related images copyright EKS Motorsports Toys/Games Audi Hatchback Racing Vehicles Videos rc car audi s1

Xcar flogs the 2016 Audi RS3

In its latest video, Xcar reckons that just as hypercars from brands like Pagani and Koenigsegg are taking supercars to a new level, the hyper hatch is now supplanting the hot hatch. Roughly defined as three- and five-door models making well in excess 300 horsepower, the reviewer holds up the new Audi RS3 as the poster child for this high-speed revolution that brings huge performance in a quite useful package. With 362 hp and 343 pound-feet of torque from its 2.5-liter turbocharged five-cylinder and a seven-speed dual-clutch gearbox, the RS3 certainly doesn't lack for performance. Audi claims that it can get to 62 miles per hour in 4.3 seconds and to a top speed of 174 miles per hour. Xcar portrays that power as quite livable, though. Apparently, this hyper hatch is made less for top performance at the track, than being sublime on the road. It seems that this hyper hatch isn't destined for these shores, though. Audi isn't bringing the five-door RS3 to the US, but a version in the body of the A3 sedan is highly rumored. If it's as wonderful as Xcar portrays the five-door, then this might be one to look forward to.

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.