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2017 Hyundai Elantra arrives with a host of upgrades [w/video]

We got a great idea of the 2017 Hyundai Elantra's styling when the company revealed it for the South Korean market a few months ago. Now, the US-spec car arrives at the LA Auto Show. The shape is just as expected, but Hyundai has new powertrains and tech in store, too. Hyundai designers simplified the Elantra's look for the latest generation. The sedan's nose now flows down to a hexagonal grille with horizontal slats, and squinting headlights flank it on each side with vertical LED running lights underneath. The new lower air dam leads air to wheel curtains that help lower wind resistance. The profile lacks the heavy sculpting of the current model, but a subtle character line sweeps up across the side for some visual interest. Narrow taillights stretch horizontally across the trunk. Even with the aesthetic changes, the overall size only expands slightly: length grows 0.8 inches to 179.9 inches, width increases an inch to 70.9 inches, and the wheelbase remains 106.3 inches. The interior features a more horizontal layout with metallic trim that runs across the dashboard. There are two infotainment choices beyond the base stereo. A seven-inch Display Audio system includes a rearview camera, and an eight-inch setup also has navigation. Both support Android Auto. Most trims of the 2017 Elantra feature a 2.0-liter four-cylinder that runs on the Atkinson cycle, and it produces an estimated 147 horsepower and 132 pound-feet of torque. Hyundai expects fuel economy ratings of 29 miles per gallon city, 38 mpg highway, and 33 mpg combined with the six-speed automatic. The company also offers a six-speed manual only on the SE trim. The Elantra Eco arrives in spring 2016 with a 1.4-liter turbocharged four cylinder with 128 hp and 156 lb-ft and a seven-speed dual-clutch gearbox. The brand estimates 35 mpg combined with that combo. A much stronger platform is beneath the upgraded design. The Elantra now uses 53 percent advanced high strength steel compared to 21 percent before, and the change allows torsional rigidity to increase 29.5 percent. The engineers also work to improve NVH wherever possible with improvements like a hood insulator, thicker glass, sound-absorbing material, and plastic and rubber bushings for the front subframe. Drivers can order a plethora of driver assistance and safety tech for the 2017 Elantra including Automatic Emergency Braking, Lane Keep Assist, adaptive cruise control and Blind Spot Detection.

Hyundai CVVD engine brings another dimension to valve timing

A new technology from Hyundai Motor Group places another marker on the march to more efficient internal combustion engines. Called Continuously Variable Valve Duration, the innovation permits two options for how long the intake valves remain open during the combustion cycle. The feature adds a third take on valve chicanery, atop variable valve timing that changes when valves open, and variable valve lift that changes how far valves open. Hyundai says the feature returns a 4% improvement in performance, a 5% increase in fuel economy, and lowers emissions by 12%. Hyundai applied for two patents on the valvetrain process in South Korea in 2011 and again in 2015. The altered valve duration in this latest iteration is made possible by two movable arms inside the camshaft. Each arm is anchored at its base to a pin at the center of the camshaft, while the end of each arm extends toward the edge of the camshaft. Changing the position of the pin in the center of the camshaft changes the angle of the arms relative to one another, which moves the camshaft along its mounting rod. Voila, a new intake cam profile that either lengthens or shortens valve overlap.   During low-speed spells at low load, CVVD opens the intake valve from the middle to the end of compression stroke. The weaker detonation isn't a factor at low load, and the reduced friction during compression improves fuel economy. During heavy engine loads, the intake valve closes at the beginning of the compression stroke to maximize the amount of air mixed for detonation, boosting torque. Four additional features enhance the benefits of CVVD. A more powerful direct injection system increases fuel spray pressure from 250 bar to 350 bar. Hyundai doesn't go into details on its Integrated Thermal Management System, but says the ITMS "quickly heats or cools the engine to the optimal temperature." Low-friction components lower overall engine friction by 34 percent. And a low-pressure exhaust gas recirculation layout diverts low-pressure exhaust gas from the traditional EGR route to the turbocharger compressor under high load for better fuel efficiency.   The first engine to boast the new tech is the Smartstream G1.6 T-GDi four-cylinder, which produces 180 horsepower and 195 pound-feet of torque. It will appear in the 2020 Hyundai Sonata Turbo going on sale in South Korea later this year.

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.