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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.

Tesla wants to hackproof the Model S

Apparently, Tesla Motors is abiding by the wise words of Chinese military general Sun Tzu to keep its friends close and its enemies closer. The tech-heavy electric vehicle maker attended the recent Def Con conference in Las Vegas, The Wall Street Journal reports, in order to learn about computer-security advances and to attract hackers. Come and get it. But Tesla's there for good reason. The California-based automaker is looking to hire at least 30 hackers from the conference (which is chock full of hacking competitions), according to the Journal. Kristin Paget, Tesla's self-described "hacker princess," notes that with the automotive industry increasingly relying on networked communications for features ranging from on-board entertainment to parallel-parking controls, automakers are very vulnerable to whims of expert hackers. Tesla has a built-in way to play defense since it already regularly sends out wireless software updates for its Model S sedan. In February, Tesla hired Paget away from Apple Computer to improve its virtual shields. Paget previously worked at Microsoft, specifically with its Vista operating system, before joining Apple in 2012. She once gained notoriety for writing a manual on how to build a fake cell tower that was capable of intercepting mobile-phone calls, so she's got a good eye for these things.

Tesla loses top communicator Simon Sproule to Aston Martin

Looking for a new job? Have experience working in a frenetic environment, promoting cutting-edge mobility products for a demanding boss determined to change the way we travel on this planet, as well as how we trek to others? We hear Tesla Motors just might have an opening for such a person. Again. Simon Sproule, the electric automaker's vice-president of communications and marketing is vacating his cubicle after a mere six months in order to become the chief marketing officer (CMO) over at Aston Martin. That position had gone begging for a year until this appointment. Once he's settled into his new digs, Sproule will again be breaking rock with former Nissan associate Andy Palmer who himself recently took the top spot at the British luxury marque. The move comes at what seems like an inopportune time for Tesla. It has a big D product announcement – suspected to be an all-wheel-drive update of the Model S – scheduled just two days from now and the reveal of its "mass market" Model ? early next year. The company declined our offer to comment on the situation. Aston Martin, on the other hand, should be happy to finally have someone at the marketing helm, what with the recent dropping of the veil from its Lagonda sedan and what's likely to be a bevy of new product built on its forthcoming platform. News Source: PR WeekImage Credit: Haruyoshi Yamaguchi / Bloomberg via Getty Images Green Marketing/Advertising Aston Martin Tesla simon sproule