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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.

Mercedes-Benz SL snapped getting major facelift

With the new Mercedes-AMG GT leading the charge, it'd be all too easy to forget about the SL. But Benz hasn't, as you can see from these latest spy shots. Spotted undergoing testing in Germany, this heavily disguised prototype foreshadows the arrival of a heavily revised two-seater convertible. It's hard to tell much from the other side of the body cladding and camouflage, but it appears to be hiding a new front end – complete with slimmer headlights, reprofiled front bumper and more upright grille – as well as a new hood, rear bumper, exhaust tips and tail lamps. Unlike the last time we saw the new SL out testing, we can now see inside as well. Although the steering wheel and center console remain hidden from view, we can anticipate a bigger touchscreen display and other updates. And apparently an onboard winter hat, as well. Now in its sixth generation, the Sport Leicht may not be as sporty or as light as the original, but while others have come and gone, the SL remains a mainstay of the Mercedes-Benz lineup. The current model was introduced in 2012, and this update should keep it fresh on the boulevards of Beverly Hills, the French Riviera and Abu Dhabi for several more years to come. Related Video:

Mercedes plotting E-Class Maybach, next A-Class for the US?

Mercedes-Benz has opened 2015 by hinting at a host of new products. Dieter Zetsche nudged the idea that there'll be a Maybach-branded SUV. AMG chief Tobias Moers told Motor Trend that "We want to be seen by the public on the same level as the other sports car maker in Germany" when asked if his crew was working on a car to rival the Porsche 918 Spyder. That and a few other tidbits have people thinking that we'll eventually see some sort of celestial AMG supercar. The latest handful of hints came from Mercedes USA CEO Steve Cannon during an interview on the marque's move to Atlanta. Cannon told Automotive News that we'd "see more from the Maybach brand," leaving the impression that there "could" be an E-Class draped in the superluxury trim. If such came to pass, there's plenty of pricing room between the E and the S-Class to slot a higher trim in. The top non-AMG E-Class starts at $62,350, the S-Class opens the bidding at $94,400. Even if you slapped the E-Class with the $23,000 premium it takes to make an S600 a Maybach S600, you've still got plenty of breathing room between the midsized and full-sized sedans. At the antipodal end, Cannon told AN that we could get a front-wheel-drive Mercedes smaller than anything here right now. That leaves the A-Class, since we've already got the B-Class. Getting the next-gen A-Class here would help with CAFE numbers, and since it will be built in the new factory in Aguascalientes, Mexico it won't have far to travel to get here. We're told it won't be like the current car, however; Cannon said, "The A-Class will change from what you have seen and from what you are used to." We hope that's a good thing, because we really like the current car. Related Video: