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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.

Porsche reveals new LMP1 racecar testing ahead of 2014 Le Mans debut

Getting ready for its triumphant return to the premier racing class of Le Mans, Porsche has released a handful of images showing its new LMP1 racecar testing. Porsche hasn't run a car in the Prototype class at 24 Hours of Le Mans since 2009, but this racecar - still veiled in secrecy - will be expected to battle against the Audi and Toyota LMP1 Prototypes to help bring Porsche its 17th Le Mans victory.
Aside from knowing that it will use a hybrid powertrain to meet LMP1 rules, there are no other details about the car... including its name or potential sponsors. In the meantime, Porsche has set up a microsite, called Mission 2014, to share its extensive history racing at Le Mans. Also, be sure to check out some of the past videos Porsche has released as it gears up for its reborn LMP1 program.

Modded budget Mazda Miata takes on new Porsche Boxster in more challenges

Earlier this month, our friends across the pond at Auto Express released the first in a two-video series that would see them try and build up a second-generation Mazda MX-5 Miata that could best a standard Porsche Boxster around the track. While that first video detailed the mods to the MX-5 - a supercharger, some suspension upgrades and a new set of super-sticky rubber being chief among them - and set baseline lap times for the stock car, today, we have the results of the 5,000-pound ($8,200) upgrade job.
Of course, we aren't going to spoil those for you. You'll need to watch the full video, which recaps the upgrades before digging into a comparison of both straight-line-speed differences between the 2.7-liter Porsche Boxster and blown Miata, as well as their behavior and lap times on the track.
Take a look and let us know what you think in Comments.