2015 Smart Fortwo Passion Coupe on 2040-cars

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Smart ForFour prototype spotted alongside next-gen ForTwo

Smart is continuing to test its upcoming ForFour (seen above) model and the replacement for the ForTwo (pictured at the right), this time doing some cold-weather work in Sweden.
As we've reported previously, the ForFour is an all-new vehicle, and it will have more in common with the smaller ForTwo than the short-lived last model that was co-developed with Mitsubishi. This ForFour is instead a collaborative project with Renault, and could spawn what will ultimately become the new Renault Twingo. Some reports have it that Renault is no longer interested in the Smart partnership, but the fact that these testers were wearing French plates and were spotted caravanning with a French-registered Dacia Duster adds a bit of circumstantial evidence that the match is intact.
The new ForTwo was also spied in these snowy environs. The two-seater is expected to be ready to roll before the ForFour - likely coming to market in 2014. The ForFour, meanwhile, might not show up until 2015.

Smart considering Forfour-based SUV

Can we interest anyone in the idea of a rear-engined SUV? Because that's what Daimler is reportedly considering for its Smart brand. According to Autocar, a crossover could be the next addition to the Smart lineup. It'd be based on the same architecture as the Smart Forfour and Renault Twingo, which are built on a rear-engined platform that gives the steering rack up front more range of motion to provide the vehicle a tight turning radius. Because the Smart and Twingo don't share much with other products in either automaker's stable, they're said to be eagerly looking for ways to make the most of their investment, and spinning off a sport-ute variant could be just the ticket. The resulting crossover could end up a little longer than the Forfour and Twingo, owing to more rugged bumpers, but would likely pack the same three-cylinder engines (in atmospheric and turbo guises) and choice of five-speed manual or six-speed dual-clutch transmissions. Whether the platform could be modified to accommodate all-wheel drive as well remains a big question mark, but we'd point out that Audi managed to squeeze its Quattro system into the A1 even though the VW Polo platform on which it was based was never designed for it. Renault could prove eager to get in on the project as well with a version of its own, giving both automakers a worthwhile challenger to the nimble little Fiat Panda 4x4. The bigger question is whether it would ever make its way to US showrooms. Currently the smaller Fortwo is the only Smart being offered in North America, with the Forfour not earmarked for these shores – and Renault of course doesn't market here altogether.

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.