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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 CLA45 AMG Racing is ready for a spot on the grid

Mercedes-Benz trotted out its CLA45 AMG-based racer at the 2013 Frankfurt Motor Show. We first showed you the sedan in the deluge of news and reveals that precedes most good auto shows, and were blown away by the car, formally known as the CLA45 AMG Racing Series.
We were strolling by the Mercedes stand, and figured we'd pop in and take a look at the new racer and its carbon-fiber body panels, gutted interior, and race-sourced aero parts. It's a looker, both as a road car and a track weapon. It's not clear what series the CLA45 AMG will qualify for, although it does seem like a shoe-in for the World Touring Car Championship. Let us know what you think of the CLA racer down in the comments. In the meantime, we've got a full gallery of live images up top, along with the stock images that were posted last week on the Mercedes-Benz Facebook page.

2014 Mercedes-Benz S-Class caught totally undisguised

Based on the lightly camouflaged spy shots of the 2014 Mercedes-Benz S-Class we've seen lately, it hasn't taken a vivid imagination to picture what the next iteration of this big luxury sedan will look like. Even so, we now we have our first unobstructed views of the redesigned S-Class, codenamed W222, as it has just been caught out flaunting for some promo shots.
The first thing we notice about the new S-Class design is the disappearance of the last generation's flared wheel arches. Yet the new design adds even more character with bodyside creases similar to the CLS-Class and some elements reminiscent of 2007's F700 Concept, including the massive grille and vertical LED taillights. Other key details include a large panoramic roof and the narrow exhaust outlets, but the large LED-trimmed headlights and the aggressive front fascia are probably the biggest departure from the current design. With these spy shots, we also catch a blurry shot of the interior, but we've seen a practically uncovered look at the new S-Class' cabin back in January.
Overall, the next S-Class sports an expressive and premium new look, but as far as all-new designs go, it's quite conservative - a move no doubt fitting for these lean financial times.