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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.

Witness this insane 736-hp VW Golf immolate its front tires

There's torque steer and then there's what we'll from now on dub "The Boba," as in Boba Kettler. The German tuner has a way with the Volkswagen Golf, and the MkI example you see above has been touched with 736 horsepower - that's right, 96 more ponies than a new SRT Viper, all trying to get to ground through those two front wheels.
The 2.0-liter, 16-valve engine has an 8,800 rpm redline and is aided by a Garrett GTX3582R turbocharger shoving 50 psi through the internals. Other upgrades include a new ECU (natch) and a six-speed 'box among other treats. The rubber is Toyo R888s - street-legal competition tires. The result is enough smoke for three Chinese New Years when the lights go green. Indeed, the standing start isn't its forte, but it can apparently get from 62 miles per hour to 124 mph in five seconds.
Watch it go in the video below. And know that this isn't even Boba's best work; he's got a 900-hp MkII Golf that'll do 0-62 mph in 2.3 seconds.

MotorWeek looks back at the 1986.5 VW Scirocco 16V

It's back to the past with MotorWeek for a video dive into the 1986.5 Volkswagen Scirocco 16V, the coupe that carried the pennant for VW's performance aspirations for 15 years, from 1974 to 1989. This one, the last generation, got the hottest of all by adding a head with four valves per cylinder. The 1.8-liter DOHC engine cranked out "an amazing" 123 horsepower and 120 pound-feet of torque, and made this model the fastest VW to ever be sold in America; it went from 0 to 60 miles per hour in 8.5 seconds, faster than a Porsche 944. To compare vintage apples to modern ones, the New Scirocco with a 123-hp 1.4-liter TSI engine and a manual transmission takes 9.3 seconds. We like MotorWeek's Retro Review series not only for the cars, but for how they also remind us of what we used to find important in cars. The Scirocco here gets upvoted for its throttle response and handling, downvoted for an oddly placed oil pressure gauge and lack of battery voltage meter. We can't remember the last time a voltage meter was mentioned in a review, either its presence or lack. Check out the video above for what the definition of "US hot hatch" used to be.