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Volkswagen hatches hotter GTI in Geneva

The all-new seventh-generation Volkswagen Golf hasn't even launched here in the United States, but over in Geneva, we're already getting our first glimpse at the hotter GTI hatchback. The fancy new Mk VII Golf is already off to a healthy start with positive reviews in Europe, and we have no doubt that this next GTI will work hard to regain its title as king of the hot hatches.
The big news for this generation of GTI is that for the first time ever, Volkswagen is actually offering two different power grades for the model, both relying on the 2.0-liter turbocharged inline-four. Standard cars pack 220 horsepower and 258 pound-feet of torque, but an optional performance pack ups the horsepower number to 230. Hitting 60 miles per hour takes 6.5 seconds (6.4 with the performance pack) and top speed is quoted at 153 mph (or 155 with the performance kit). Volkswagen will continue to offer the GTI with both six-speed manual and dual-clutch transmissions.
On the visual front, the sub-3,000-pound GTI adds the usual bit of hot hatch aggression over the standard Golf, and those changes carry over to the interior with a flat-bottomed wheel and, of course, plaid seats. She's certainly a looker, and while some of us do find the new Golf's design to be a bit staid and evolutionary, the enhancements for the GTI indeed tug on our enthusiast heart strings.

VW joins Daimler's protest of new A/C refrigerant as EU deadline for compliance passes

The case of Dupont and Honeywell's refrigerant R-1234yf is doing the exact opposite of keeping things cool. The two chemical companies have spent years and hundreds of millions of dollars developing R-1234yf to replace R-134a, the new refrigerant shown to be 99.7-percent kinder to the environment than the one it is meant to succeed. Part of that development has been years of testing by governments, outside safety agencies and automakers to approve the chemical for use in cars. It passed the protocols necessary for the European Union to declare that new and significantly revised cars from 2013 onward needed to use R-1234yf, and mandated that every car as of 2017 must use it.
Enter Daimler AG. The automaker created a head-on collision test with a B-Class at their Sindelfingen test track that would lead to the pressurized refrigerant being sprayed on the engine. The result in 20 out of 20 test was that the refrigerant burst into flames as soon as it hit the hot engine, while Daimler says that R-134a does not catch fire in the same test. Another unexpected result of the R-1234yf test was the release of hydrogen flouride, a chemical far more deadly to humans than hydrogen cyanide, emitted in such amounts that it that turned the windshield white as it began to eat into the glass.
Said a Daimler engineer in a Reuters piece, "It was scarcely believable. The most complicated lab tests conducted using the most sensitive measuring instruments around found nothing and all we do is drive a car around a couple of times, open a tiny hole in the refrigerant line and the next thing you know the car is on fire." So Daimler said it wouldn't use the refrigerant, and it recalled the cars it had already shipped with R-1234yf.

VW to unveil diesel-electric Twin-Up! in Tokyo

We've received multiple reports that Volkswagen will be bringing a diesel-electric concept to the 2013 Tokyo Motor Show, set to take place later this month. The car, called the Twin-Up!, is based on the Up! city car, with some sources claiming this is a thinly veiled concept that will eventually enter production.
According to Automotive News Europe, the Twin-Up! will reportedly return 214 miles per gallon on the US cycle by combining an 800-cc, two-cylinder diesel and an electric motor. It will also boast plug-in capabilities, and will be able to cover 30 miles on electric power alone.
Autocar has a more complete picture of the Twin-Up!'s powertrain, though, claiming it's a modified version of the hybrid system found in the Volkswagen XL1. The Twin-Up! will get a more potent, 47-horsepower electric motor to the XL1's 27-hp unit, but will retain that car's 47-hp turbodiesel. The battery pack will also grow, from 5.5 kilowatt hours to 8.6 kWh. Both of these increases are necessary due to the increased weight of the Twin-Up! - it's some 900 pounds heavier than an XL1.