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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.

2019 Mercedes-Benz G-Class vs big luxury off-roaders: How they compare on paper

During our first drive of the 2019 Mercedes-Benz G-Class, the all-new SUV's product manager was asked to identify competitors that might have been benchmarked in its development. The look on his face was about the same as if someone had asked him to recite King Lear in Klingon. As far as Andreas Hoeppel was concerned, the G 550 and AMG G 63 doesn't actually have a rival, or at least something the engineers and designers thought to compare it against. The G-Class is a G-Class, who cares what the other guys are doing? Well, in case you care, we figured we'd plug the new G-Class' specs into the old Autoblog Comparo Generator 3000 (TM) to see how the G 550 and AMG G 63 compare to the Range Rover and its mightiest SVAutobiography Dynamic model, plus the Lexus LX 570 and Bentley Bentayga V8. Frankly, Heir Hoeppel was onto something as each of these is wildly different. But, they do share some common elements: giant size and weight, ultra-lux interiors, and far more off-roading capability than other luxury SUVs offer and any of its owners are likely to ever utilize. Sad. So enjoy this trip down specification lane, and if you're still left hungry, you can always check out our Range Rover comparison or create your very own comparo. Off-Road Clearances and Capability All the fancy off-roading software and special cameras in the world won't do you a lick of good if your SUV is too close to the ground or has low-hanging body work that'll get easily ripped off. As such, check out each of these uber-SUV's ground clearance, approach and departure angles, and wading/fording depths. In this case, the Range Rover has an advantage due to its air suspension that can raise itself into an Off-Roading height that's a whopping 2 inches higher than the new G-Wagen. Sadly for itself, Lexus only provides figures for its air suspension when in normal height. It could match or surpass the Range Rover for all we know (but doubt it). As Land Rover does provide figures for the Range Rover's approach and departure angles in normal and Off-Road height, you can get an idea of just how much clearance the new G-Wagen has without any fancy (and expensive to fix) raising and lowering air suspension hardware. In fact, its departure angle is better than even the Range Rover's Off-Road height. Bentley doesn't provide any such information despite touting the Bentayga's surprising off-roading talents.

Next Mercedes E-Class to get quad-turbo inline-six, augmented reality

It's been 10 years since an inline six-cylinder engine sat up front in a Mercedes-Benz road car, but the straight-six shooter returns with the 2016 E-Class. According to a report in Car we'll see a modular family in gasoline and diesel versions, and Auto Evolution adds that the bore and stroke will be shared by both fuel types. Car says a 2.9-liter diesel variant arrives first in global markets, putting out 313 horsepower when twin-turbocharged and "over 400bhp" when fitted with two more battery-powered turbos. Auto Evolution's numbers match those and add torque figures, with 516 pound-feet for the former and 627 lb-ft for the latter - but it makes no mention of the two extra turbos. AE believes the gas versions will ring in at 367 hp and 479 lb-ft, and 435 hp and 553 lb-ft. Keep in mind that until we hear it from Stuttgart, this is all (exciting) speculation. Elsewhere in E-ville, more aluminum and that scalable MRA platform mean a weight loss of somewhere between 154 and 330 pounds compared to today's car. Seven bodystyles (including the CLS-Class) will continue to make up the range, with the coupe and convertible growing a bit to provide proper four-seater comfort. It will bear the new standard for Daimler technology, showcasing the next step in the company's Intelligent Drive with features like phone-controlled self-parking in confined spaces and augmented reality in the heads-up display. Related Video: Featured Gallery Mercedes-Benz E-Class Spy Shots View 12 Photos News Source: Car, Auto Evolution Rumormill Mercedes-Benz Technology Diesel Vehicles Hybrid Luxury Performance Sedan augmented reality