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Mercedes-Benz A45 AMG shows up to fight the hottest hatches [w/videos]

Fun coincidence. On the same day that Audi announces the unveiling of its new S3 Sportback at the Geneva Motor Show, Mercedes-Benz steals the spotlight by confirming that the all-new A45 AMG will also receive its official debut early next month. Starting life as the entry-level A-Class hatchback, the A45 AMG gets the full AMG treatment, which includes numerous performance, handling and styling upgrades.
Under the hood sits an AMG-tuned 2.0-liter turbocharged I4 breathing through a sport exhaust system helping the five-door produce 360 horsepower and 332 pound-feet of torque. This engine is paired to a seven-speed AMG dual-clutch transmission and power is sent to the ground using 4Matic all-wheel drive. Mercedes-Benz says that the A45 AMG will be able to accelerate from 0-60 miles per hour in under 4.5 seconds and it will have a top speed of 155 mph; in the land of hot hatches, it doesn't get much hotter than that. For added performance and handling, AMG has retuned the A-Class' suspension and steering systems and equipped The A45 with a three-stage stability control system that is specific to this car.
Surprisingly, the exterior styling of the A-Class was already sporty enough that the new model doesn't receive too many changes to become the A45 AMG. The biggest alterations include black accents to the chin spoiler, rocker panels and mirror caps, black wheels with red-painted brake calipers and rectangular dual exhaust outlets. Inside, it doesn't take a trained eye to spot the differences. The flat-bottomed sport steering wheel and the numerous red accents throughout the cabin (including the seatbelts!) really help to make this AMG interior stand out; front passengers will also get sport bucket seats that appear to be more than supportive enough for even the most spirited driving conditions.

US buyers show little interest in big hybrids

The idea of producing large, luxury-vehicle hybrids is turning into a "what were they thinking?" exercise in futility, USA Today reports. General Motors is discontinuing hybrid versions of the Cadillac Escalade, Chevrolet Tahoe and GMC Yukon SUVs, while Mercedes-Benz and Toyota's Lexus division are doing the same with their S-Class hybrid and LS hybrid sedans, respectively. The culprit? Big price increases for fuel economy improvements that border on the unimpressive. Granted, the Escalade hybrid gets 31 percent better fuel economy than the standard version, but that still maps out to a combined fuel-efficiency rating of just 21 miles per gallon. That can be seen as a worthwhile increase, if it didn't cost over $8,000 extra. The 2014 Escalade Hybrid, for example, starts at $74,425 while the non-hybrid can be had for $66,295. Meanwhile, the Lexus full-size hybrid costs $6,000 more than the regular version but only gets 1-2 mpg better combined fuel economy. The result of all these high costs? Low sales. Through April, GM sold 82 of its hybrid SUVs and pickups, down from 541 a year earlier. And the LS hybrid sales were in single-digit territory for April. That isn't stopping Lexus from promoting its hybrids as the right solution (with the wrong facts), though. There are still automakers giving big hybrid vehicles a shot, though. Nissan's Infiniti division is selling a hybrid version of its QX60 and says an impressive 10 percent of QX60 buyers choose the hybrid, which costs just $3,000 more. Looks like money talks. Featured Gallery 2015 Cadillac Escalade: First Drive View 35 Photos News Source: USA TodayImage Credit: Copyright 2014 Brandon Turkus / AOL Green Infiniti Lexus Mercedes-Benz Hybrid lexus ls gmc yukon mercedes-benz s-class infiniti qx60 chevrolet tahoe

Mercedes-Benz engines with 48-volt systems coming in 2017

As part of a big green push announced yesterday, Mercedes-Benz is jumping into the world of 48-volt power. The company will launch a new family of efficient gasoline engines next year and will begin rolling out 48-volt systems with it, likely in its more expensive cars first. Mercedes will use the 48-volt systems to power mild-hybrid functions like energy recuperation (commonly called brake regeneration), engine stop-start, electric boost, and even moving a car from a stop on electric power alone. These features will be enabled through either an integrated starter-generator (Mercedes abbreviates it ISG) or a belt-driven generator (RSG). (RSG is from the German word for belt-driven generator, Riemenstartergeneratoren. That's your language lesson for the day.) Mercedes didn't offer many other details on the new family of engines. There are 48-volt systems already in production; Audi's three-compressor SQ7 engine uses an electric supercharger run by a 48-volt system, and there's a new SQ5 diesel on the horizon that will use a similar setup with the medium-voltage system. Electric superchargers require a lot of juice, which can be fed by either a supercapacitor or batteries in a 48-volt system. Why 48-volt Matters: Current hybrid and battery-electric vehicles make use of very high voltages in their batteries, motors, and the wiring that connects them, usually around 200 to 600 volts. The high voltage gives them enough power to move a big vehicle, but it also creates safety issues. The way to mitigate those safety issues is with added equipment, and that increases both cost and weight. You can see where this is going. By switching to a 48-volt system, the high-voltage issues go away and the electrical architecture benefits from four times the voltage of a normal vehicle system and uses the same current, providing four times the power. The electrical architecture will cost more than a 12-volt system but less than the complex and more dangerous systems in current electrified vehicles. The added cost makes sense now because automakers are running out of ways to wisely spend money for efficiency gains. Cars can retain a cheaper 12-volt battery for lower-power accessories and run the high-draw systems on the 48-volt circuit. The industry is moving toward 48-volt power, with the SAE working on a standard for the systems and Delphi claiming a 10-percent increase in fuel economy for cars that make the switch.