2008 Clk63 Convertible. Black/grey/black. 11k Mi. Like New on 2040-cars

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Mercedes mulling Renault-based entry-level X-Class?

Somewhere in between the Smart brand and the all-new A-Class (pictured above), Daimler is said to be readying a smaller entry-level product for the Mercedes-Benz brand to compete with models like the Audi A1. According to AutoBild, Mercedes-Benz will get a new hatchback based on a platform from its recent partnership with Renault-Nissan, and it could be called the X-Class.
Expected to debut by 2018, the Mercedes-Benz X-Class could be offered in sedan, hatchback and crossover variants, and it would likely have a starting price below the $20,000-euro mark. Power would come from either a 1.0-liter inline three-cylinder engine or a 1.5-liter inline-four, and the car would likely be built in a low-cost nation in order to make the financials work. Wearing the Mercedes-Benz name, the X-Class would have to exhibit more distinguishable luxury and styling to set itself apart from the models that helped provide its underpinnings.

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.

Rare Isdera Imperator 108i flexes its considerable muscles

The Isdera Imperator 108i is a remarkably rare supercar from the late 80s and early 90s. Born of a Mercedes-Benz concept car, it's powered by a range of AMG-developed V8s, with five to six liters of displacement, depending on the engine. The example shown here, lapping the legendary Spa-Francorchamps circuit, features the most potent 6.0-liter V8 available. And rather than just being driven about on a perfectly clean racing line, it's freaking power sliding!
Yes, there's something eternally childlike about a wedge-shaped supercar from our formative years being flung about a Belgian racetrack. Adding to the appeal is the Imperator's stumpy, periscopic rear mirror, sticking out of the roof. Even after being out of production for 20 years, this is still a wild, wild car and we'd happily snap up the opportunity pilot one of the 36 Isderas that were built. Take a look below for the full video from Spa.