2012 Mercedes C300 4-matic Sport Navi on 2040-cars

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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.

Formula One speeds towards radical thousand-horsepower shakeup

The teams, the drivers, the fans, the circuits... few, if any, were satisfied with how Formula One has shaped up since the current regulations took hold last year. But that doesn't mean they aren't working on it. At a recent meeting of the F1 Strategy Group, the leading parties in the sport outlined a new framework that would radically shake up the cars themselves while keeping costs in check. And the biggest change could see the engines producing around 1,000 horsepower. Although a proposal put forth by Ferrari to ditch the current V6 hybrid engines in favor of new twin-turbocharged units was rejected by Honda and Mercedes, the members of the group approved in principal to increase the fuel flow in the existing engines to dramatically boost output. As it stands, the current 1.6-liter turbocharged V6 engines develop around 600 horsepower, with an additional 160 or so kicked in by the electric Energy Recovery System, for a combined output of about 760 hp. What's not clear at the moment is whether the increased fuel flow would necessitate either the return of mid-race refueling (currently banned) or the installation of larger fuel tanks. Red Bull and McLaren also submitted proposals to radically redesign the shape of the cars as well, however a more evolutionary approach was adopted instead. Though far from finalized, the new design would keep the same basic form of the current chassis, but with adjustments to make them more aesthetically pleasing while producing more downforce. Wider tires are also said to be part of the mix. With more power and more grip from the tires and aero, the resulting cars would most certainly end up going much faster than the current ones, which are already starting to nudge the lap records at some of the circuits, many of which were set during the V10 era. The F1 Strategy Group is made up of representatives of the FIA, Formula One Management and six leading teams. The next step will be for the teams' technical directors to iron out how to implement what their bosses have agreed to. If they settle the details fast enough, the revised regulations could be pushed through in time for next season. News Source: AutosportImage Credit: Mark Thompson/Getty Motorsports Ferrari Honda Infiniti McLaren Mercedes-Benz F1

2014 Mercedes-Benz E-Class lineup shows its freshened face

Mercedes-Benz showed us its redesigned 2014 E-Class more than a month ago, but the Detroit Auto Show finally gave us a chance to see the full family of mid-size luxury cars and wagons in the flesh. Dieter Zetsche introduced the cars, including sedan, coupe, convertible and station wagon, on stage showing the stylish new design direction.
The wagon and sedan versions (shown as the E400 Hybrid above) will go on sale this spring, while the coupe and cabriolet will hit showrooms over the summer. Check our new gallery of live shots for the entire 2014 E-Class lineup, as well as the previously released press release below.