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Jaguar's latest beast is the 2018 XJR575

Hot off the rear wheels of the insanely quick XE SV Project 8, Jaguar is back with another pumped-up sedan. It's called the XJR575, and although it isn't as extreme as the aforementioned XE, it still packs a version of the company's 5.0-liter supercharged V8 that makes 575 horsepower and 517 pound-feet of torque. According to Jaguar, that will get the full-size luxury sedan to 60 mph in 4.2 seconds on its way to a top speed of 186 mph. There isn't much on the outside to tell this hot-rodded kitty from the regular XJR. The front bumper, rear spoiler, hood vents, and side skirts are all the same as the lower-powered version. It does come standard with black wheels, but they can also be optioned on a normal XJR. There are only a couple of unique points. One of which is the addition of XJR575 badges. The other is the application of a model-specific paint color. Buyers of the XJR575 will have the option to coat their cats in the Satin Corris Gray seen above, or a hue called Velocity Blue. Inside, seats are upholstered in black leather with red stitching. They feature diamond-stitched panels, as well. In the seat backs, the number 575 is embroidered. The sill plates also feature the XJR575 logo. The infotainment gets an upgrade, too, in the form of a bigger 10-inch touchscreen. Jaguar hasn't announced pricing or availability of the XJR575 yet. However, we will likely know soon, as the company will be revealing some updates for the rest of the XJ line-up for the 2018 model year. We expect to get details on pricing and availability at that time. Related Video:

Jaguar XJ could move to all-electric platform late this year

The Jaguar XJ is getting a little long in the tooth. The current generation of Jaguar's flagship sedan debuted back in 2009, making it one of the oldest vehicles still on the market. This week, Autocar reported that a new XJ could debut late this year and would move to an all-electric platform. That would place the XJ straight against cars like the Tesla Model S and upcoming Porsche Mission E, presumably sharing parts with the upcoming I-Pace electric crossover. While a couple of refreshes have kept the Jaguar competitive, the Mercedes-Benz S-Class and BMW 7 Series and Audi A8 have gone through full redesigns since the XJ debuted. (Two for the Audi). Compared to the Germans, the Jaguar looks and feels dated, especially when it comes to technology, active safety and alternative powertrains. In the U.S., the XJ is only available with either a supercharged gasoline V6 or V8. The competition from Germany, Japan and the U.S. all offer some form of electrification. Moving to an all-electric powertrain would be a huge shift for Jaguar and is sure to spark some debate among enthusiasts. The British automaker has previously stated it plans to electrify all new vehicles after 2020. Look for electrified variants of current models to be available, too. The new XJ is rumored to be co-developed with a new model called the Road Rover, a sort of high-riding sedan or wagon in the vein of the Audi allroad or Volvo V90 Cross Country. Like the XJ, the Road Rover would use a battery electric powertrain. Look for more news on both models later this year. Related Video:

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.