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NHTSA closes probe into 2011 Porsche 911 coolant leaks

The National Highway Traffic Safety Administration has announced that it will end its investigation into rapid coolant loss in 24,635 Porsche 911s built between 2001 and 2011. The models affected included the standard 911, GT2, GT3 and Turbo, as well as their variants (GT2 RS, GT3 RS and Turbo S).
NHTSA was investigating for "rapid coolant loss caused by coolant pipe-fitting failure, allegedly resulting in vehicle disablement and/or loss of vehicle control due to reduced traction for the affected vehicle or following traffic," according to the regulators website. "Most of the leak complaints did not appear to involve complete separation of the fittings and many were detected when the vehicle was parked," said NHTSA's statement.
There were 63 complaints and 336 warranty claims, although the investigation was initiated after ten complaints from customers. There have been no reports of crashes or injuries attributed to rapid coolant loss.

Watch a Group B Porsche 911 tear up the 'Ring in the snow

The Nurburgring is a motorsports fantasyland during the best weather, but it looks even more exciting when the snow starts to fall. While the course isn't open to the general public during the winter, this Porsche 911 SC RS rally car managed a lap of the snow-covered Grand Prix Circuit, sliding the whole way around. The 911 SC RS isn't as famous as Porsche racers like the 917, but it has an interesting story. Porsche's development of the 959 was slow in the '80s, and this coupe was the company's stopgap for Group B rallying. The SC RS used the 911 Turbo's wider body, suspension, and brakes, but the car had a naturally aspirated 3.0-liter flat-six to drive the rear wheels. It couldn't compete against all-wheel drive beasts like the Audi Quattro, but one managed third place in the 1985 Tour de Corse in France. The SC RS sounds great in this video, and it looks even better kicking up snow. There's so much accumulation that you can't tell which way the track goes, but driver Patrick Simon knows his way around. After watching this clip, we think the 'Ring should unleash a few more old rally cars on the track for a new racing series next winter.

Porsche CEO outlines Cayenne diesel US repair proposal

Porsche has announced a plan to fix the emissions issue on the Cayenne with the 3.0-liter diesel V6, and it includes a software update and the replacement of the catalytic converter on some early examples, according to Reuters. The company believes these repairs are enough to make the SUVs emissions compliant, but the automaker's proposal still needs approval from the Environmental Protection Agency and California Air Resources Board before it can implement a recall. This authorization could come by the end of January. Note that the proposed 3.0-liter TDI plan is separate from the 2.0-liter TDI fix that was rejected by CARB on Tuesday. There are around 13,000 Cayennes on the road that the company needs to repair. Models from 2013 and 2014 would require a new catalytic converter and a software update, but those from 2015 and 2016 would just need the new software. "The technical aspects have all been submitted, we will wait whether there will still be proposals for corrections by the Americans," Porsche CEO Oliver Blume said to Reuters. He wasn't sure how long the repair process would take, but suggested less than half of the affected examples would require the upgraded exhaust hardware. Blume indicated to Reuters that Audi actually created this repair plan. The EPA first issued a violation notice against the 3.0 TDI in early November and later broadened it to around 85,000 vehicles from the 2009-2016 model years, including diesel examples of the Cayenne, Volkswagen Touareg, Audi A6, A7, A8, Q5, and Q7. Audi later admitted the engine contained previously undisclosed auxiliary emission control devices. CARB gave the automaker 45 days to come up with a recall proposal to fix the 15,000 affected models in the state. Related Video: