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Mercedes-Benz intros long-wheelbase E-Class for China

Long-wheelbase sedans are a pretty hot commodity in China, and to keep up with the competition, Mercedes-Benz has introduced an extended version of the 2014 E-Class sedan at the Shanghai Motor Show. Audi, BMW, Volvo and even Cadillac offer extended versions of sedans specific to the Chinese market, and now the E-Class L, shown off in E400L guise, will give luxury sedan buyers in China yet another option.
Compared to the standard 2014 E-Class sedan, the new China-spec E-Class L has been stretched by 5.5 inches - all of which goes to the rear-seat passengers. According to an article on China View from earlier in the year, the market for chauffeur-driven cars is growing in the Asian nation, so automakers need long-wheelbase models like the E-Class L in order to fully compete. As for what powers this stretched E-Class, it's available in three models: the diesel E260L, the V6-powered E300L and the E400 Hybrid.
The redesigned E-Class and the all-new A-Class are just the first of 20 new Mercedes-Benz products that will be introduced into the Chinese auto market by 2015. Scroll down for the full press release on long-wheelbase E.

Why it's difficult to accurately test the efficiency of a plug-in car

When it comes to electric vehicles and plug-ins in general, the Environmental Protection Agency-certified range is a hugely important number. While actual range anxiety is largely psychological, the magic number does provide a point of comparison of buyers considering one EV over another. The driving distance is also often touted by automakers when marketing their models. Unfortunately, as Green Car Reports finds in a recent deep dive, the way the EPA calculates the figure is a convoluted mess, and discovering the reasons why is definitely worth the read. The issue isn't about bad science but instead comes down to vague wording. The EPA's accepted range test is sourced from an evaluation called J-1634 from the Society of Automotive Engineers, and it seems to provide balanced results for vehicles that automatically reach a single state of charge when plugged in. However for models with multiple charge settings, the situation gets complicated very quickly. Of course, these modes are often created in the software, meaning that a car's certified driving distance can change with just a few taps of the keyboard without the real world results owners might experience actually changing. By showing the test's effects on the certified range for the Tesla Model S, Nissan Leaf and Mercedes-Benz B-Class Electric Drive over the last few years, Green Car Reports makes a compelling argument that it's the evaluation that needs to change. Thankfully, it appears that the solution is a very simple one. Get the details here.

SRT Viper dukes it out with Mercedes SLS Black Series in new Head 2 Head

In Episode 36 of Motor Trend's Head 2 Head, now that the Corvette ZR1 is no more, Jonny Lieberman has to look overseas to the Mercedes-Benz SLS AMG Black Series for a challenger with similar philosophy to the SRT Viper: long hood hiding a high-horsepower engine set way back, rear-wheel drive, tiny trunks. That puts the Viper's 8.4-liter V10 with 640 horsepower and 600 pound-feet of torque against the SLS AMG's 6.2-liter V8 with 622 hp and 468 lb-ft.
However, the congruences in philosophy and magnitude of numbers doesn't translate to the driving experiences of the two, which are literally and figuratively on different continents. Lieberman gets a handle on the two of them on Northern California roads, Randy Probst then finds out how, and how quickly, they can lap Laguna Seca.
They both get kudos for being improvements on their original sources, but only one of them can take the win. You can find out by watching the video below.