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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 Concept GLC Coupe comes to China ready to fight BMW's X4

There's little denying that small crossovers are hot right now. Not only are automakers scrambling to exploit the popularity of the market, they're doing so by offering unique twists on the traditional two-box body style – enter the coupe-like four-door CUV. BMW, for example, has the X4, and now, Mercedes-Benz is bringing a challenger of its own. While it wears the concept name, the new GLC Coupe clearly foreshadows a production model that'll duke it out with the aforementioned BMW. If the vehicle shown above is any indication, when that fight happens, Mercedes will enter it with design on its side. The sheetmetal is muscular, with strong lines on the profile and the hood, while major themes in the front, back and sides are reminiscent of higher-end Silver Arrows. While we doubt the production GLC Coupe will be much of a trail bomber, fore and aft scuff plating is there to give the impression it can handle itself off road. Also, we feel obligated to give Mercedes bonus design points for the diagonally stacked quad exhausts at the back. It's worth noting that the Concept GLC Coupe's styling previews not one but two production vehicles, as it's logical to assume the design language featured here will have a strong influence on the next GLC (the crossover formerly known as the GLK). Not only will the GLC Coupe have aesthetics on its side, at 15.5-feet long and riding on a 111.4-inch wheelbase, it's larger than its rival from Munich, too, although only just. The X4 is two inches shorter overall and has an extra 0.8 inches between the axles. The Benz is wider, too, at 78.7 inches, compared to 74.1. Lending credence to the Concept GLC Coupe's production status, Mercedes released a pretty substantial array of technical details on its new four-door, coupe-crossover. With a twin-turbocharged, 3.0-liter V6 punching out 367 horsepower and 387 pound-feet of torque, we're betting this would be the AMG Sport variant, rather than your everyday GLC. 4Matic all-wheel drive is a must-have in this segment, and it's present here, while a nine-speed automatic transmission is responsible for distributing power. The Concept GLC Coupe will be shown this week at the 2015 Shanghai Motor Show. Check back then for more. Mercedes-Benz Concept GLC Coupe The next coup Stuttgart / Shanghai. In a flowing transition, Mercedes-Benz lands the next coup: the Concept GLC Coupe is a near-production-standard study that carries the successful GLE Coupe formula over into a more compact segment.

Mercedes-Benz recalls 3,800 total vehicles in two campaigns

Mercedes-Benz is recalling 3,813 vehicles in two campaigns in the US, and the affected models span the top and bottom of the brand's product range. The larger recall covers 2,956 examples of the 2014 S63 AMG sedan and 2015-2016 S63 AMG 4Matic sedan and coupe. According to the National Highway Traffic Safety Administration, a software error in the engine control unit can cause the high-performance luxury cars to stall when coasting to a stop. While this can initially appear to be normal operation of the stop/start system, the engine doesn't restart when the driver releases the brake pedal. Getting moving again involves shifting into neutral or park and going through the ignition process. The repair campaign will begin on December 8, and the models will need an update to the engine control unit software. This will also be the second recent recall for the 2015 S63 AMG 4Matic Coupe because another fix will replace their seatbelts. In a more complicated issue, Mercedes is recalling 857 examples of the 2015 CLA250, CLA250 4Matic, GLA250, GLA250 4Matic, and the 2016 SLK300 because a weld on the camshafts might be in the wrong place "due to a production deviation at a supplier." Potentially, the important parts could break and damage the engine. Beginning November 30, dealers will replace the affected camshafts as a precautionary measure. RECALL Subject : Engine Stall due to Engine Control Unit Software Report Receipt Date: OCT 14, 2015 NHTSA Campaign Number: 15V652000 Component(s): ELECTRICAL SYSTEM , FUEL SYSTEM, GASOLINE Potential Number of Units Affected: 2,956 All Products Associated with this Recall Vehicle Make Model Model Year(s) MERCEDES BENZ S63 AMG 2014 MERCEDES BENZ S63 AMG 4MATIC 2015-2016 Details Manufacturer: Mercedes-Benz USA, LLC. SUMMARY: Mercedes-Benz USA LLC (Mercedes-Benz) is recalling certain model year 2014 S63 AMG sedans and 2015-2016 S63 AMG 4Matic sedans and coupes manufactured May 14, 2013, to September 18, 2015. In the affected vehicles, due to a software error within the engine control unit, the vehicle may stall when coasting to a stop, such as at a traffic light. CONSEQUENCE: The vehicle stall may be interpreted by the driver to be a planned shut-down as part of the ECO-Start-function. However, the engine will not restart automatically after releasing the brake pedal, immobilizing the vehicle and increasing the risk of a crash.