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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.

2016 Mercedes-Benz G550 Quick Spin [w/video]

If there ever was an automotive embodiment of the phrase, "If it ain't broke, don't fix it," that'd be the Mercedes-Benz G-Class. The G-Wagen has carried on largely unchanged since the 1970s, with only small updates throughout the decades. Today, it's the halo vehicle for Mercedes' entire SUV range, and while it's more luxurious and efficient than ever, it'll still climb a mountain if asked. "Our legend has a bright future," says Dr. Gunnar Guthenke, Mercedes' G-Class boss. And for now, that means the addition of a new base engine for the 2016 model year, as well as other small updates. The powerplant in question is Merc's new twin-turbocharged, 4.0-liter V8 – you know, the one from the AMG GT – tuned to produce 416 horsepower and 450 pound-feet of torque in the G550. Compared to the outgoing, naturally aspirated, 5.5-liter V8, the new engine is stronger by 34 hp and 59 lb-ft. And while official fuel economy numbers are still pending, Mercedes says the G550 is 17-percent more fuel efficient with this smaller, more powerful engine. Win-win. As for the rest of the G-Class, the 2016 model year changes are limited to a new front bumper with more pronounced air intakes (and the removal of the cow catcher bars), wider wheel arches, a few new colors (including some seriously bright hues), and a redesigned instrument cluster. Those are all well and good, but the star of the show is that 4.0-liter V8. It's a honey in the AMG GT, and it's a perfect fit under the hood of the G550. Driving Notes I'm kicking myself for not taking video of the exhaust note, because holy crap, the G550 sounds amazing. Mercedes' engineers should be applauded for the exhaust tuning on the updated G-Class. The result is a low, burbly, throaty V8 noise that comes bellowing out the SUV's side pipes. The extra 59 lb-ft of torque is really noticeable off the line. And like in the AMG GT and C63, the 4.0-liter V8 provides linear power delivery with no noticeable turbo lag. Mercedes says the 2016 G550 will do 0-60 in 5.7 seconds, compared to 6.0 seconds in the 2015 model. That's right, it's a 5,724-pound, box-shaped SUV that'll run nearly neck and neck with a base Porsche Boxster. In terms of on-road refinement, the G-Class is the same as it ever was. There's an optional, adjustable suspension for 2016, with Comfort and Sport modes, but the difference between the two settings is negligible.

Ferrari's Vettel sets lap record and take pole position for Chinese Grand Prix

SHANGHAI – Ferrari made Formula One rivals sit up and take notice after an ominous show of speed in qualifying for Sunday's Chinese Grand Prix. World championship leader Sebastian Vettel took pole position with a lap more than half a second faster than that of Valtteri Bottas, the fastest of the two Mercedes drivers in third place. The German's best time of one minute, 31.095 seconds – a Shanghai circuit record – turned up the heat on a chilly afternoon with Finnish team mate Kimi Raikkonen joining him on the front row. "We thought coming into today that we would be fighting for the pole position," said Bottas, whose reigning champion team mate Lewis Hamilton qualified fourth after aborting his final flying lap. "But it was definitely out of reach today, there was nothing in the lap that we could have gained that much." "I don't know if we can challenge, we're half a second behind today," added Hamilton. "We were quicker in the race in the last race (Bahrain) but they (Ferrari) were able to hold on. They will probably do the same tomorrow." Dominant isn't a word that has been used to describe Ferrari since they chalked up five straight drivers' titles and six consecutive constructors' crowns with Michael Schumacher, but they were imperious on Saturday. The front row lockout was their second in a row after Vettel beat Raikkonen to pole last weekend in Bahrain. "Ferrari were just way too quick," said Red Bull's Max Verstappen, who was fifth fastest but a hefty 0.701 seconds off Vettel's pace. "Somehow they've found a turbo button on the straight because they are really quick and still in the corners they are reasonably quick." Verstappen's Red Bull teammate Daniel Ricciardo added, "Ferrari has had really good pace all weekend and I can't say honestly now that we're going to have their pace tomorrow, but Mercedes definitely look within reach." Ferrari's speed had already stunned rivals after Friday's opening day of practice pointed to a close battle, even if Hamilton was top of the timesheets. With temperatures plunging on Saturday, the scarlet cars seemed to come into their own. Vettel, who holds a 17-point lead over Mercedes rival Lewis Hamilton after winning in Australia and Bahrain, is looking good for a hat-trick. No driver has ever won the season's first three races without being crowned champion that year, and the last Ferrari driver to do it was Schumacher in 2004 when he was at the peak of his powers and won the opening five.