1967 - Mercedes-benz Sl-class on 2040-cars

Auto blog

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.

The mood at this year’s Paris Motor Show: Quiet

The Paris Motor Show, held every other year in the early fall, typically kicks off the annual cavalcade of automotive conclaves, one that traverses the globe between autumn and spring, introducing projective, conceptual and production-ready vehicle models to the international automotive press, automotive aficionados and a public hungry for news of our increasingly futuristic mobility enterprise. But this year, at the press preview days for the show, the grounds of the Porte de Versailles convention center felt a bit more sparsely populated than usual. This was not simply a subjective sensation, or one influenced by the center's atypically dispersed assemblage of seven discrete buildings, which tends to spread out the cars and the crowds. There were not only fewer new vehicles being premiered in Paris this year, there were fewer manufacturers there to display them. Major mainstream European OEM stalwarts such as Alfa Romeo, Fiat, Nissan and Volkswagen chose to sit out Paris this year, as did boutique manufacturers like Bentley, Aston Martin and Lamborghini. This is not simply based in some antipathy on the part of the German, British and Italian manufacturers toward the French market — though for a variety of historical and societal reasons that market may be more dominated by vehicles produced domestically than others. Rather, it is part of a larger trend in the industry. Last year, Mercedes-Benz announced that it would not be participating in the flagship North American International Auto Show in 2019 — and that it might not return. Other brands including Jaguar/Land Rover, Audi, Porsche, Mazda and nearly every exotic carmaker have also departed the Detroit show. Some of these brands will still appear in the city in which the show is taking place, and host an event offsite, to capitalize on the presence of a large number of reporters in attendance. And even brands that do have a presence at the show have shifted their vehicle introductions to the days before the official press opening in an attempt to stand out from the crowd. In many ways, this makes sense. With an expanding number of automakers, with diversification and niche-ification of models and with wholesale shifts that necessitate the introduction of EV or autonomous sub-brands, there is a growing sense that, with everyone shouting at the same time, no one can be heard.

Mercedes-Benz working on S-Class EV in accelerated green car lineup?

With Mercedes-Benz bringing out coupe and plug-in hybrid versions of its S-Class sedan, the German automaker just may follow through with a battery-electric variant as well. That's what the company's Uwe Ernstberger told the folks at Top Gear during the Geneva Motor Show. And while he noted the company still needs to work in a larger-than-usual battery pack and was less than specific with details, he did envision an all-electric S-Class "in the future." Of course, rumors started bubbling about an EV S-Class as far back as 2011, so we'll see. Christian Bokich, department manager for product and technology communications for Mercedes-Benz USA, would not confirm anything about an electric S-Class, but he did give AutoblogGreen an official rundown of MB's upcoming green cars in the US, starting with the launch of the all-electric B-Class ED in July of this year in the ZEV states (launch details for other states are TBA, he said). An S-Class plug-in hybrid is coming in the first half of 2015, followed by a C-Class PHEV closer towards the end of that year in the USA. There is also a C-Class four-cylinder BlueTEC coming at some point in 2016. Until we get more concrete information about the possible S-Class EV, let's review what we know about the PHEV. Last September, Mercedes-Benz started showing off the plug-in hybrid S-Class, saying that it could go as far as 19 miles on electric power alone and had a preliminary fuel efficiency rating of more than 78 miles per gallon, using the more lenient European driving cycle. Earlier this week, Mercedes showed off its S-Class Coupe. That model's US version will have a twin-turbocharged V8 that kicks in 449 horsepower, a few more than the presumptive S-Class EV will have. Ernstberger also said Mercedes would join the ranks of automakers offering autonomous driving systems and mentioned the S-Class as being at the "top of the movement." He held his tongue when asked about the possibility of an S-Class cabriolet.