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2014 Mercedes B-Class ED battery much bigger than previously stated

There was something unexpected hiding in the new configurator for the 2014 Mercedes-Benz B-Class Electric Drive: a $600 "Temporary range extender." Since we've never heard of such a thing, we had to click through for more. The official explanation runs like this: A suite of options to further increase your driving range includes added insulation of the doors and roof for to increase climate-control efficiency, along with an electrically heated windshield and a range-extending charge function. By pressing a button on the console prior to charging, the maximum charge level for battery will increased for the next charge cycle. The higher-capacity charge can provide up to 17 additional miles of range. The passive features that increase range should be standard in all models, we think. But we were more curious about the battery charge situation. How do you increase a maximum? And is it a good idea to do so? The configurator includes this disclaimer, after all: Range extender should only be used on a limited basis, and could shorten battery life if used excessively. How much is excessive? We investigate below. The B-Class ED has, according to the specs, a 28-kWh battery. First, let's understand what this "temporary range extender" is all about. The B-Class ED has, according to the specs, a 28-kWh battery. But Terry Wei, from the Mercedes-Benz USA product and technology communications department, confirmed to AutoblogGreen that the B-Class ED is actually hiding a 36-kWh battery, but the automaker is calling it a 28-kWh battery because that's how much energy capacity is used in day-to-day use. Most automakers publicly claim the actual capacity and then admit they use a percentage of it. The Chevy Volt, for example, has a 16.5-kWh battery pack, but a "full charge" only fills up around 65 percent of that. In the B-Class ED, the 28 kWh of useable energy provides an EPA-certified 87 miles of range. But, since there are eight kWh of reserve, the temporary range extender (we think of it as a software update accessed by a button) can access some of that and offer the aforementioned 17 miles. Now that we know what we're dealing with, this reminds us of an evolved version of the "remote wireless charging" feature that was touted in the Reva EV. Wei said that the reason the feature is optional is because Mercedes doesn't think most people will need it. Eighty-seven miles is plenty for your average EV driver, but when you want to have 100+ in the tank, you can.

Mercedes-AMG GT S pit against Porsche 911 Turbo in Evo Deadly Rivals test

When Mercedes-Benz announced that its all-new AMG GT would start at $129,900 deeply undercutting the $200,000-plus of its predecessor, the SLS AMG, immediate questions focused on how it'd stack up against the latest crop of high performers that occupy the mid-$100,000 range. Evo, over in the UK, didn't have to wait all that long. The latest installment in the outlet's "Deadly Rivals" series compares the AMG GT with the latest Porsche 911 Turbo. On paper, the test is sure to be interesting. The Mercedes uses a 4.0-liter, twin-turbocharged V8 with 503 horsepower and 479 pound-feet of torque, while a seven-speed AMG Speedshift dual-clutch shuffles power to the back axle. The 911 Turbo's formula is more of a known quantity – 520 hp from a twin-turbo, 3.8-liter flat six with the company's own PDK working in unison with all-wheel drive, torque vectoring and rear-axle steering. Of course, we're not going to spoil the results for you. Take a look at the video up top, and let us know what you think of Evo's latest track battle.

Cigarette Racing unveils the AMG GT S-inspired 50-foot Marauder

The Cigarette Racing stand at the Miami Boat Show this morning hosted the latest in the eight-year collaboration between Mercedes-AMG and Cigarette Racing: the AMG GT S parked next to the fast-boat it inspired, the Cigarette Racing 50 Marauder GT S Concept. The vinyl ester resin and fiberglass go-fast boat is more than a matching Solarbeam yellow paint job with the coupe that inspired it. Like other carmakers who have partnered with companies outside the industry - such as Nissan's recent tie-up with NASA - there's an exchange of technology involved; Cigarette said that working with AMG on composites and bonding helped them drop 1,000 pounds off the Marauder GT S Concept compared to the standard Marauder twin-engine, which comes in at 14,200 pounds. Customers who order standard Marauders can request the weight reduction (for a price), but we were told that unless they plan to spend most of their time above 100 miles per hour, the extra weight contributes to a smoother ride. Mercedes head designer Gordon Wagener penned the exterior paint job and worked with Cigarette to design the cockpit trim, which would have seen him in familiar surroundings: Cigarette Racing owner Skip Braver is a long-time AMG customer, and the boat company based its bespoke department on the AMG Design Studio in Affalterbach. Every one of its boats is handbuilt in its factory in Opa-locka, Florida using some of the same processes seen in automaking, like bar codes to track the progress of hulls and components, computer controlled paint samples with digital files that can be sent around the world for matching, and doing all the stitching in-house to keep tabs on quality control. The engine compartment holds two, nine-liter, four-valve, DOHC, quad-cam, twin-turbocharged Mercury Racing engines with all-aluminum blocks, each one of them good for an electronically-limited 1,550 pound-feet of torque, and either 1,350 horsepower or 1,550 horsepower depending on whether you run regular 91-octane fuel or 116-octane race fuel. So yes, that's 3,100 hp and 3,100 lb-ft at once, if you go all out. Mercury says they're the most powerful powerful emissions-certified gas-powered marine engines you can buy. The engines don't have knock sensors, though, so you have to turn a key to register the kind of fuel you're putting in, and you can switch from one to the other when two 150-gallon tanks are down to 10-percent full.