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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 to roll out C63 AMG late in 2014 with 4.0L V8

The new 2014 Mercedes-Benz C-Class is upon us, launching initially in North America with turbocharged four-cylinder C300 4Matic and six-cylinder C400 4Matic flavors. But that's only the tip of the proverbial iceberg when it comes to the vast array of powertrain configurations that will be offered in the new C-Class in markets around the world. Orders will soon be rolling in for gasoline, hybrid and diesel engines with four, six or eight cylinders, driving the rear wheels or all four, with the seven-speed automatic transmission soon to be replaced by a new nine-speed unit. But what enthusiasts are really looking forward to is the next C63 AMG.
As BMW has done with the M3 (and new M4), Mercedes has gradually ratcheted up the cylinder count in its AMG C-Class, graduating from the 3.6-liter V6 in the original C36 AMG to the 4.3-liter V8 in the C43 AMG, then the 5.5-liter V8 in the C55 AMG before going the distance with the sublime 6.2-liter V8 in the C63 AMG. Like its rivals, Mercedes is expected to use turbochargers as a replacement for displacement in the next model, but unlike its Bavarian rival, it won't be losing any cylinders in the process.
Skipping the 5.5-liter twin-turbo V8 that has gone on to power other AMG models, the next C63 AMG is still expected to introduce a new 4.0-liter twin-turbo V8 producing between 450 and 500 horsepower. It'll also reportedly keep the same seven-speed automatic transmission (instead of switching to the new nine-speed), but the jury's still out on whether it'll come with rear- or all-wheel drive (or offer buyers the choice). The downsized V8 - codenamed M177 - is then expected to find its way into other models, but the C-Class will be the first to get it when it arrives before the end of the new year ahead.

Mercedes may not be done with R-Class after all

The idea of blending a three-row SUV and a minivan into a luxury model like the Mercedes-Benz R-Class still seems wonderfully absurd, particularly when you consider that there was an AMG version of that German people-mover. Apparently, though, one of the brand's execs doesn't believe the concept behind the R-Class is all that bizarre. In fact, he thinks it could be time to try again. Wolf-Dieter Kurz, Mercedes' vice president in charge of SUVs and sports cars, believes that crossovers could be a major driver of product variants in the future due to their popularity. There are a lot of design possibilities to explore in the segment, in his opinion. "There was already one that we had in the portfolio – maybe we were too early – which was the R-Class, which we are still selling in China. It's doing good, with 12,000 to 14,000 units per year," Kurz said during the launch of the GLE and GLE Coupe, according to CarAdvice. Under a recent deal, the quirky model is made by AM General and exported out of the US. Kurz even suggested the exact niche that the new model might fill. "So let's say these more, let's say, on-road based but still very roomy, but not station wagon, is definitely an interesting segment also in the future," he said, according to CarAdvice. That almost sounds like a blend of wagon and SUV in a move not too dissimilar from the current Subaru Outback or the old R-Class. One hurdle for any future model reviving the concept of the R-Class is that the company is already bursting with CUVs. Every size is practically already filled with the GLA, GLC, GLE, and forthcoming GLS, plus Coupe variants for some of them.