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Recharge Wrap-up: Cezeta electric scooter, BMW's new Efficient Dynamics engines

The revived Czech motor scooter company Cezeta has revealed its retro-styled electric scooter. The Cezeta 506, which borrows its looks from the brand's scooters from the 1950s and 1960s, uses an 11-kW (about 15 hp) electric motor to propel itself and its rider to speeds of up to 68 miles per hour, making it suitable for highway use. A smartphone app allows the owner to reprogram top speed and acceleration, find charging stations, and take advantage of the bike's built-in Bluetooth speakers. See the video above, read more at Technologic Vehicles, or learn more at the Cezeta website. BMW has unveiled its newest Efficient Dynamics engines. In three- and four-cylinder, gasoline- and diesel-burning versions, the new modular powerplants share architecture and componentry. Featuring an aluminum crankcase and displacing about 0.5 liters per cylinder, the new engines are also aided by BMW's TwinPower turbocharging technology. Both the gasoline and diesel variants offer a savings of about five percent in fuel and emissions while improving performance. Learn more, including the many technical details, at Green Car Congress. Tesla is set to open its largest Supercharger stations to date, at 20 stalls apiece. In anticipation of a growing demand for charging infrastructure with the launch of the Model 3, Tesla will open one of the 20-stall stations in its hometown of Fremont, California, with the other opening in Nebbenes, Norway, not far from the EV-loving country's capital of Oslo. It's not clear when the Fremont location will open, but the Norwegian station should be up and running in August. Read more at Electrek. A new study confirms that automotive aluminum is recycled at a rate of 91 percent. According to research from the Worcester Polytechnic Institute's (WPI) Center for Resource Recovery and Recycling (funded, we should note, by the Aluminum Association), provides evidence of aluminum's sustainability in the manufacturing process. "With an eye toward reducing the nation's energy consumption, lowering carbon emissions, and increasing fuel economy," says Professor Diran Apelian of WPI's Metal Processing Institute, "this study confirms that as aluminum use continues to grow in the automotive sector it also enhances energy security and environmental protections." Read more in the press release below.

Here’s how 20 popular EVs fared in cold-weather testing in Norway

Electric vehicles are known to suffer diminished performance in cold weather, but some do a better job than others hanging onto their range capacity while cabin heaters and frigid outdoor temperatures sap power from their batteries. Recently, the Norwegian Automobile Federation put the 20 of the best-selling battery-electric vehicles in the country to the test, to see not only how winter weather affected their range but also their charging times. The major findings: On average, electric vehicles lost 18.5% of their official driving range as determined by the European WLTP cycle. Electric vehicles also charge more slowly in cold temperatures. And interestingly, the researchers learned that EVs don’t simply shut down when they lose power but instead deliver a series of warnings to the driver, with driving comfort and speed levels maintained until the very last few miles. Because itÂ’s Norway, the worldÂ’s top market for electric and plug-in hybrid vehicles by market share, the test included many EVs that arenÂ’t available here in the U.S. But there are many familiar faces, among them the Nissan Leaf, Tesla Models S, 3 and X, Hyundai Kona (known here as the Kona Electric) and Ioniq, and Audi E-Tron. In terms of range, the top-performing EV was the Hyundai Kona, which lost only 9% of its official range, which the WTLP rated at 449 kilometers, or 279 miles, compared to its EPA-rated range of 258 miles on a full charge. It delivered 405 km, just enough to nudge it ahead of the Tesla Model 3, which returned 404 km. Other top performers included the Audi E-Tron, in both its 50 Quattro (13% lower range) and higher-powered 55 Quattro (14% lower) guises; the Hyundai Ioniq (10% lower); and Volkswagen e-Golf (11% lower). At 610 km (379 miles) the Tesla Model S has the longest WLTP range of all models tested and went the furthest, but still lost 23% of its range, though it also encountered energy-sapping heavy snow at the end of its test, when many cars had dropped out. The Model 3 lost 28% of its range. The worst performer? That goes to the Opel Ampera-e, better known stateside as the Chevrolet Bolt. It traveled 297 km (about 184 miles) in the test, which was nearly 30% lower than its stated WLTP range. We should also note that Opel, now owned by Groupe PSA, is phasing the car out in Europe and that Chevy recently upgraded the Bolt here in the U.S.

BMW says its diesels are above board

BMW got yanked into the riptide of the Volkswagen diesel scandal thanks to a report in Auto Bild, which Auto Bild has now clarified. On Thursday the German magazine said that when the International Council on Clean Transportation tested the X3 xDrive 2.0d, the ICCT discovered the diesel X3's tailpipe emissions exceeded the European limit by more than 1,100 percent. The key detail, though, is that apparently at no time did the ICCT find that BMW cheated on any emissions tests. No one has explained why the X3 diesel had such high emissions and the ICCT wouldn't comment on the Auto Bild report. But the mag has issued a clarification asserting that in spite of the excessive emissions, there is no evidence BMW engaged in regulatory subterfuge. Every other BMW vehicle ICCT tested was within compliance, but the organization's report from October 2014 - that no one paid attention to - found that nitrogen oxide emissions in 15 vehicles it tested averaged seven times the European limit. The brand's stock is still suffering from the taint. It dropped almost ten percent the day the report came out before rallying to close at five percent down. But on Monday BMW stock closed at 84.01 euros, and as of writing on Friday it's still trying to fight its way back above 80 euros. With so many people still just trying to find out how widespread the the issue is, and trust rather low, it's likely BMW won't be the one dragged down, fairly or not. Related Video: