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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 CLA and GLA get more power, quicker

Unlike in Europe, Mercedes-Benz doesn't have hyper hatches like the Audi RS3 to compete against in North America, at least not yet. However, the company isn't letting its high-performance compacts get behind the times anywhere in the world with the announcement that the CLA45 AMG and GLA45 AMG in the US are getting practically the same raft of upgrades as the ones across the pond. Both models go on sale in October in US dealers. Like its European counterpart, the 2.0-liter turbocharged four-cylinder in the diminutive AMGs receives upgrades to produce 375 horsepower and 350 pound-feet of torque (the 381 hp rating over there is in metric ponies). That's an impressive 20-horsepower and 18 lb-ft bump over the current version of the mill. Beyond just the boost in output, quicker acceleration comes from revised, more aggressive ratios in third through seventh gears. The latest AMGs make great use of their upgrades, too. The 2016 GLA45 now clocks the run to 60 miles per hour in 4.3 seconds, a staggering half-second quicker than the 2015 model. The CLA45 slices 0.3 seconds off its time to make the sprint in 4.1 seconds, which gives the sedan the same acceleration as a SL63 AMG. In addition to the powertrain tweaks, the 2016 models get a few other added luxuries. As in Europe, they receive the Dynamic Select System that uses a rotary knob select from multiple driving modes. Inside, there's standard keyless start, dual-zone climate controls, and Mercedes' latest infotainment unit. A "Turbo 4Matic" badge on the fender now hints at the vehicles' performance potential. The new Dynamic Plus Package is the major addition to the options list. It combines a limited slip differential at the front, AMG Adaptive Suspension, Race Mode, Performance Steering Wheel, and pushes the top speed to 167 mph. At the same time, the AMG Driver's Package is discontinued, and the AMG Performance Studio Package is dropped on the CLA45. Related Video:

Mercedes previews GLC crossover coupe concept for Shanghai

Say what you will about slant-backed crossover coupes: if the industry has learned anything from BMW and its X6, it's that they're popular... and profitable. Little wonder, then, that Mercedes followed suit with the release of the GLE Coupe. And now it appears set to follow the lead set by the BMW X4 as well with a smaller GLC Coupe... at least, that is, in concept form. Previewed in this latest teaser rendering is the Concept GLC Coupe, a design study which Mercedes is set to present at the Shanghai Motor Show later this month. The statement that accompanies it (which you can read below) doesn't tell us much, except to say that it is "near-production-standard" – which is to say that it stands a strong chance of reaching showrooms. As it is, the GLC with a conventional roofline is set to take the place of the GLK in Benz's expanding crossover lineup. The emergence of this concept ought to preview that new model's styling, regardless of how steeply its roofline tapers off towards the back. The Shanghai show is, incidentally, the same venue Mercedes originally floated the idea of its smallest crossover with the presentation of the Concept GLA two years ago. And as we all know, that subsequently entered production – in a form closely following that of the concept. So we wouldn't be surprised to see a GLC Coupe emerge in close proximity to its more conventional counterpart (maybe even before), heavily influenced by the show car we'll see later this month. Related Video: