2013 Mercedes-benz Cls-class Cls550 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.

Brabus bringing 900-horsepower Mercedes S65 to Geneva

The S-Class may be the ultimate Mercedes, but what's the ultimate S-Class? Is it the S550? Maybe in some markets, but that's just the starting point in North America. The S600? Getting closer. The Maybach? Sure, if the last word in luxury is what you're after. But if it's performance you crave, then you'll want an AMG version like the S63. But even that's not the flagship. No, in terms of outright power, it all comes down to the S65. It's got a 6.0-liter twin-turbo V12 churning out 621 horsepower and 738 pound-feet of torque, for crying out loud. But Brabus thinks it's still not enough. That's why (alongside the 850-hp S63 coupe) it's bringing a version it calls the Rocket 900 to the Geneva Motor Show this week. To turn the S65 AMG into the Rocket 900, Brabus has bored out the cylinders to total 6.3 liters and fitted larger turbochargers, a new exhaust system, intake module and much, much more. The result is an output increased to 887 bhp and 1,106 lb-ft of torque. Brabus has upgraded the limited slip differential to handle the extra muscle, helping it rocket to 62 in just 3.7 seconds, on to 124 in 9.1 and up to a top speed of 217 Autobahn-crunching miles per hour. The famed Benz tuner has also fitted a carbon-fiber aero kit to keep it from flying away (however unlikely considering the vehicle's approximately 5,000-lb curb weight), along with 21- or 22-inch wheels, a retuned air suspension that drops the ride height over half an inch closer to the road and – we can only hope since the release makes no such mention – upgraded brakes as well to keep it all in check. Brabus also offers a full range of interior enhancements as well, but don't expect any of this to come cheap. As it is, the S65 starts at $222,000, but a turn-key Brabus Rocket 900 goes for 347,719 euros – or about $390k at today's rates. Related Video: World premiere at the 2015 Geneva Motor Show BRABUS ROCKET 900 The new reference for high performance in the luxury class V12 with 662 kW / 900 hp, 1,500 Nm and a top speed in excess of 350 km/h BRABUS ROCKET 900 – that is the new reference for high performance in the luxury class, which celebrates its world premiere at the 2015 Geneva Motor Show. BRABUS (Brabus-Allee, D-46240 Bottrop, phone +49 / (0) 2041 / 777-0, fax +49 / (0) 2041 / 777 111, internet www.brabus.com) builds this super car based on the new Mercedes S 65.

2015 Mercedes-Benz S550 PHEV offers the best of both worlds it's ready to conquer

The Mercedes-Benz S-Class just keeps growing – both in terms of dimensions and in terms of variants. Nevermind the S-Class Coupe for a moment and focus only on the sedan: in North America alone, you can get the big Benz in S550, S600, S63 and S65 spec, and at the Los Angeles Auto Show this year, Daimler has rolled out the new Maybach version as well. But if it's a more environmentally friendly way to woosh around town in serene luxury that you're after, you'll want to look at the new S550 Plug-In Hybrid. Joining Daimler's growing range of battery-powered models alongside the E400 Hybrid, B-Class Electric Drive and Smart ED (the latter soon to be replaced by an all-new version), the S550 PHEV is the German automaker's first plug-in hybrid. It was first announced over a year ago and made its debut at the Frankfurt Motor Show last year, but now the US-spec car is making its North American debut in LA. Promising "the performance of a V8 and the fuel consumption of a compact model," the S550 PHEV pairs a 3.0-liter twin-turbo V6 to an 80-kW electric motor, the S550 PHEV packs a combined 436 horsepower and 479 pound-feet of torque to reach 62 in just 5.2 seconds, top out at 130 miles per hour or drive up to 20 miles on electric mode alone. On the European combined cycle, it'll return an impressive 84 miles per gallon, all the while never skimping on the luxury. Scope it out in our gallery of photos from the show floor in LA and delve into the details in the press release below. First PLUG-IN HYBRID with a star: S550 PLUG-IN HYBRID The new Mercedes-Benz S550 PLUG-IN HYBRID blends an ultramodern hybrid drive configuration with the unique innovations and the luxurious equipment and appointments of the S-Class. The luxury sedan impresses with exceptional dynamism and efficiency. Thanks to standard pre-entry climate control it also offers unique climate comfort. The first certified three-liter luxury sedan in the world is a further milestone on the road to emission-free mobility. "The S550 PLUG-IN HYBRID is the first luxury sedan with the performance of a V8 and the fuel consumption of a compact model. The greatest challenge in this is to translate efficiency into superior performance. In this respect there is a highly interesting parallel with our successful Formula 1 racing car, which likewise has a turbocharged V6 engine and a high-tech hybrid drive," says Prof. Dr.