1994 Mercedes E320 Cabriolet "low Miles, Well Maintained, Excellent Conditon!!!" on 2040-cars

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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.

Mercedes-AMG planning more hardcore A45 hot hatch

The launch of the A45 AMG marked Mercedes-Benz's first real assault on the premium hot hatch segment. And with 355 horsepower from a 2.0-liter turbo four, it is indeed hot. But the latest word has it that Mercedes-AMG is planning an even hotter version. Speaking with Auto Express at the LA Auto Show last week, AMG boss Tobias Moers indicated that his department was toying with the idea of a more hardcore version of the A45. In what Moers referred to as a "street fighter," the A45's engine would be tuned to produce even more power, the cabin stripped out and the rolling stock, brakes and aero upgraded for more serious performance. Think of it, then, as something of a Black Series approach, only it's not expected to carry that name, which has historically been reserved specifically for two-door models. Given AMG's current list of priorities and limited manpower, though, Moers suggests it will be several years – likely towards the end of the model's life cycle – before it may prepare such a model, following a similar formula to the Mini JCW GP and Renaultsport Megane R26.R. Here's hoping an American version based on the CLA could also be in the cards.

2016 Mercedes-AMG GLE63 S Coupe 4Matic brings big power to go with massive name

Mercedes-Benz hopped into the luxury crossover coupe market with both feet with the recently debuted GLE-Class Coupe. While the existence of beauty in this segment is still up for debate, the Merc really gives the BMW X6 a direct competitor. With the newly unveiled 2016 Mercedes-AMG GLE63 S Coupe 4Matic, the engineers from Affalterbach are now also turning their sights on their rivals from BMW's M division. Don't let the name fool you. The GLE63 AMG Coupe eschews the twin-turbo 4.0-liter V8 from the C63 AMG in favor of an even bigger power source. This crossover uses the company's thundering 5.5-liter twin-turbocharged V8 with stop/start that pumps out 577 horsepower and 561 pound-feet of torque – 10 hp and 8 lb-ft more than the X6 M. The deep well of muscle means the sprint to 62 miles per hour takes just 4.2 seconds; faster than you can say the coupe's mile-long official name. The AMG Speedshift Plus 7G-Tronic seven-speed automatic gearbox routes all of that grunt to all four wheels with a 40:60 front/rear split. The styling of this beast gets a special nod from AMG by being the first CUV from the company to get its A-wing grille. Even if the rest of the design can be polarizing, this portion looks fantastic. The airfoil in the bumper is supposed to look like a stylized A, and from some angles, the wing almost appears like its just floating there. Each side of the GLE63 features black wheel arch flares, and around back there's a small lip spoiler on the tailgate. It's complimented by a new rear apron that has air outlets at each corner, integrated tailpipes and a diffuser in the center. Being a Mercedes-AMG, buyers sit in the lap of luxury inside. The seats are covered in Nappa leather with AMG crests on the headrests. The performance brand's moniker can also be found on the three-spoke steering wheel, and the instrument panel even gets covered in black Nappa. Obviously, if this isn't enough for potential buyers, Mercedes has a ton of options on hand. They include performance-oriented items like a sport exhaust system, 22-inch wheels and carbon fiber engine cover, but there're also more opulent choices like the fragrance mister and a high-end Bang & Olufson sound system. Scroll down for all the details on the much more powerful GLE Coupe. The new Mercedes-AMG GLE63 S Coupe 4MATIC Driving performance reinterpreted Affalterbach/Detroit.