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2015 Mercedes-Benz ML400 Quick Spin

Mercedes-Benz has taken a risk in its quest to downsize its engine range. For 2015, the brand's popular M-Class five-passenger CUV did away with its trusty 4.4-liter, twin-turbocharged V8, and has replaced it with a 3.0-liter, twin-turbocharged V6. It's no surprise that power is down thanks to this move. Outputs of 402 horsepower and 443 pound-feet of torque are replaced by 329 hp and 354 lb-ft, but weight is down significantly as well. The new ML400 is nearly 300 pounds lighter than the 4,982-pound ML550. Will that tradeoff be enough to satisfy a buying public that's embraced falling fuel prices by buying bigger and thirstier vehicles? To find out if the blown V6 is a suitable replacement for the twin-turbo V8, we spent a week at the helm of the all-new ML400. Driving Notes This 3.0-liter, twin-turbocharged V6 is the same engine being offered in the C400 and E400 sedans. Typical of today's turbocharged engines, peak torque is spread lavishly across the rev range, from 1,600 to 4,000 rpm. That's not as generous a spread as the ML550, which offers all its torque between 1,600 and 4,750, but the power on offer is easy to access. Importantly, the new V6 never feels flat-footed or unable to answer our commands. In fact, the ML400 feels even quicker than its six-second sprint to 60 would indicate, although it's not so fast as to challenge the 5.3-second time of the ML550. After a slight and expected bout of turbo lag, the power arrives suddenly and proceeds linearly until just south of the engine's 6,500-rpm redline. The throttle response is soft in Eco mode, as expected, but sharpens up slightly when the fuel-sipping mode is off, where the gas pedal is still easy to modulate. It's a quiet engine, too. Compared to the brawnier exhaust note of the old ML550 or the howling six-cylinder in the BMW X5 xDrive35i, the ML400's note is smooth and refined, befitting of a V6. Its turbocharged nature is instantly noticed, though. Get on the throttle and the 3.0-liter happily hisses its way up the tachometer. But, it's only when you get on the throttle hard that the engine really weighs in. In day-to-day driving and traffic its soundtrack is unobtrusive and relaxed. The EPA rates the ML400's fuel economy at 18-miles-per-gallon city and a 22-mpg on the highway. That's better than the 14 city and 19 highway of the old V8 ML, but it still seems a bit low, especially for the highway figure.

Mercedes unveils GLC350e 4Matic PHEV

Mercedes-Benz intends to introduce at least 10 plug-in hybrid models to the market by 2017, and the the Mercedes GLC350e 4Matic is the latest one to show its electrified face. It's also the second crossover from the company to offer a PHEV version following the GLE550e 4Matic. Mercedes isn't releasing all of the details about the plug-in GLC yet, but it combines an internal combustion engine making 208 horsepower and a 114 hp electric motor with a seven-speed gearbox. Total torque is 413 pound-feet. The combo is enough to get the all-wheel drive crossover to 62 miles per hour in a purported 5.9 seconds and a claimed top speed of 146 mph. Fuel economy in the European cycle is estimated at the equivalent of about 90 miles per gallon, and there's a 21-mile pure electric range for zero-emissions cruising. Based around the newly introduced GLC-Class, buyers can still order a plethora of luxurious amenities, but the plug-in powertrain also comes with a few tweaks to help drivers maximize fuel economy. There's a haptic accelerator with a resistance point to indicate the switch between electric and combustion power. In addition, the hybrid system can anticipate the road ahead through radar and GPS to manage things as efficiently as possible. One of the GLC hybrid's biggest advantages when it arrives is the small field of competitors. Neither BMW nor Audi currently have a compact luxury crossover of this size with a hybrid option in the US. That really only leaves the Mercedes to take on the Lexus NX300h with total system output of 194 hp, and that's not even a plug-in. The GLC350e 4Matic isn't part of the new model's initial launch lineup in the US. It should be coming along later, though. Key topic: Energy efficiency - Economy on four wheels A revised all-wheel-drive powertrain, the outstanding aerodynamics and the intelligent lightweight design are the primary reasons for the high energy efficiency of all the new GLC models. The conventional diesel and petrol models boast significant reductions of up to 19 percent in both fuel consumption and CO2 emissions in comparison to the previous generation, while at the same time improving performance. GLC 220 d 4MATIC GLC 250 d 4MATIC GLC 250 4MATIC Output, kW/hp 125/170 150/204 155/211 Torque, Nm 400 500 350 Fuel consumption (l/100 km) 5.0 - 5.5 (6.1 - 6.5) 5.0 - 5.5 (6.1 - 6.6) 6.5 - 7.1 (7.5 - 7.9) ? Consumption % -19 -19 -12 CO2 g/km 129 - 143 (159 - 169) 129 - 143 (159 - 169) 152 - 166 (173 - 180) ?

German companies team up with telecom to spur development of talking cars

With connectivity and communications becoming an ever larger part of the automotive world, German automakers Audi, BMW, and Daimler formed the 5G Automotive Association with Intel, Nokia, Ericsson, Qualcomm, and Huawei. The goal is to develop new technologies to take advantage of LTE and 5G advancements, create standards, and overcome regulatory issues. If they succeed, it will be easier for them companies to develop and implement new technologies. For instance, we could see smarter traffic management, and maybe platooning, advance further in the autonomous sector. By acting as a group, they will also be able to address regulatory issues more easily. All of these companies are capable of developing advanced vehicle communication systems on their own. Audi, in fact, has been pursuing vehicle-to-infrastructure (V2I) technology and launched a stoplight timer in models in some cities. Still, the alliance offers the potential to save time and develop new ideas. Related Video: Image Credit: Audi Auto News Audi BMW Mercedes-Benz Technology Emerging Technologies Infotainment Autonomous Vehicles 5g Connectivity v2v intel vehicle to vehicle communications vehicle to infrastructure technology v2i