2002 Mercedes-benz Clk320 Base Convertible 2-door 3.2l 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 GLE to debut in NY, will get plug-in variant

On the eve of the 2015 Detroit Auto Show, Dieter Zetsche, Chairman of Daimler AG, said that 2015 will be the "Year of the SUV" at Mercedes-Benz. This means a host of new and updated sport-utility and crossover models, kicked off with the debut of the GLE-Class Coupe (pictured above) – in 450 AMG Sport and Mercedes-AMG GLE63 variants – here in the Motor City. But there's far more in store throughout the year. First, Mercedes has confirmed it will debut the non-coupe GLE-Class – the M-Class replacement – at the New York Auto Show in April. It will share most of its architecture with the GLE Coupe revealed here in Detroit, but will also come with a plug-in hybrid option. Mercedes-Benz debuted an S-Class Plug-In Hybrid at the Los Angeles Auto Show last November, and will expand this technology to other core models in its range. First, we will see the C350 Plug-In Hybrid, which also makes its debut here in Detroit. Beyond that, Mercedes has confirmed that the GLE-Class will benefit from a plug-in option, as will the upcoming GLC-Class crossover – the renamed replacement for the GLK. No official timing has been given for the GLC, but Mercedes confirms that both it and its largest utility vehicle – the GLS-Class (currently known as the GL-Class) – will debut "later this year." Year of the SUV, indeed. Featured Gallery 2016 Mercedes-AMG GLE63 Coupe View 9 Photos Green Detroit Auto Show New York Auto Show Mercedes-Benz Crossover SUV Hybrid Luxury PHEV 2015 Detroit Auto Show mercedes glk-class mercedes gl-class mercedes gle-class mercedes glc-class mercedes gls-class

Buy a V8 Mercedes-Maybach, or splurge for a V12? Oh to have such problems

There's a certain air that surrounds the Maybach badge, and it's not just the scent being pumped out by the ionizer in the car's glovebox. It's the cream of the crop when it comes to German luxury. These cars are filled with an acre's worth of wood and a herd's worth of cows, ensuring your fingers rarely touch materials as pedestrian as plastic. It's as quiet, as smooth, and as imposing as you think it would be. Though the latest model from Mercedes-Maybach, the S550, might have swapped in a V8 and all-wheel drive in place of the V12 at the heart of the S600, no other amenities have been lost in translation. The car's size gives it a certain presence. Staring at the profile shows a wheelbase that spans two counties, necessitating a microphone and speaker setup simply so that the driver can converse with the passenger – and a Maybach will almost always have a passenger. No one buys a Maybach to drive. You buy a Maybach to be driven. No means of transport short of business-class airline seating offers this much space. Sit back, recline the seat, roll up the shades and enjoy your $167,125 cocoon. But you know all of that already. What you really want to know is if $25,000 - the V12-powered S600 starts at $192,225 - is worth it to gain an extra four cylinders, 74 horsepower, and 96 lb-ft of torque. On paper, no, it's not. The two cars have identical performance numbers, and the S550 benefits from Mercedes' 4Matic all-wheel-drive system. Even with all-wheel drive, the S550 weighs less than the nose-heavy S600. Fuel economy is, as expected, superior in the S550. It's rated at 16 city, 24 highway and 19 combined as opposed to 13 city, 21 highway, and 16 combined. Visually, the two cars are identical save for a few badges. The V12 badge on the S600 is replaced with a 4Matic badge on the S550, and that's where things start to get murky. When you're spending six figures on a car, decisions become more emotional than practical. $25,000 is a lot of money, but there's a bigger difference between $25,000 and $50,000 than there is between $167,000 and $192,000. As stated, you don't buy these cars to drive. Performance needs to be merely adequate. A smooth, torquey V12 is likely preferable to a hairy-chested V8, refined as it may be. These cars will never touch redline, lest the passengers spill their champagne. Plus, that V12 badge is worth its weight in country club memberships. Driving an S550 is fine until an owner shows up at an event behind an S600.