2007 Nissan Pathfinder on 2040-cars

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Why it's difficult to accurately test the efficiency of a plug-in car

When it comes to electric vehicles and plug-ins in general, the Environmental Protection Agency-certified range is a hugely important number. While actual range anxiety is largely psychological, the magic number does provide a point of comparison of buyers considering one EV over another. The driving distance is also often touted by automakers when marketing their models. Unfortunately, as Green Car Reports finds in a recent deep dive, the way the EPA calculates the figure is a convoluted mess, and discovering the reasons why is definitely worth the read. The issue isn't about bad science but instead comes down to vague wording. The EPA's accepted range test is sourced from an evaluation called J-1634 from the Society of Automotive Engineers, and it seems to provide balanced results for vehicles that automatically reach a single state of charge when plugged in. However for models with multiple charge settings, the situation gets complicated very quickly. Of course, these modes are often created in the software, meaning that a car's certified driving distance can change with just a few taps of the keyboard without the real world results owners might experience actually changing. By showing the test's effects on the certified range for the Tesla Model S, Nissan Leaf and Mercedes-Benz B-Class Electric Drive over the last few years, Green Car Reports makes a compelling argument that it's the evaluation that needs to change. Thankfully, it appears that the solution is a very simple one. Get the details here.

2014 Nissan Leaf named overall cleanest car in US

A research firm has named the zero-emission 2014 Nissan Leaf the cleanest production vehicle in the US, and that's figuring in the full, wheel-to-well lifetime impact of the car on the environment. The Automotive Science Group (ASG) studied more than 1,300 automobiles with at least four seats across nine categories, measuring everything from the amount of fuel needed to run the car during its lifetime to the extraction of natural resources to build the thing in the first place to end-of-life processing. ASG calls the process "wildly complex." The battery-electric Leaf, with its 84-mile single-charge range, took top honors overall, but there were other highly ranked vehicles in different categories. ASG also said that the Mitsubishi Mirage, with its sub-2,000-pound curb weight and 40 miles per gallon fuel economy, was the cleanest among gas-powered vehicles, while the Chevrolet Spark had the lowest cast of ownership over five years. Last month, the American Council for an Energy-Efficient Economy (ACEEE) put together its annual "Greenest" and "Meanest" (notice: we didn't say "Cleanest") lists and put the Leaf at number three. Topping that list was the Smart ForTwo ED battery-electric, but that was followed up by the Toyota Prius C compact hybrid, so fans of those vehicles can now start a healthy debate. The ACEEE uses data from the Environmental Protection Agency and California Air Resources Board to compile its list. We have ASG's press release below. Life-cycle Assessment of 1,300 Models Reveals Best of 2014 FOR IMMEDIATE RELEASE 4 February 2014 [Santa Rosa, CA] – The Automotive Science Group (ASG) conducted a comprehensive life-cycle assessment of over 1,300 automobiles across nine categories to distinguish the BEST model year 2014 vehicles in environmental, economic, social and "all-around" performance. Auto consumers are now equipped with a car buying guide founded on principled facts, a departure from the notoriously subjective test drive "editor reviews" that have long been the industry norm. Using a unique combination of vehicle data inputs that include conventional specifications as well as ground-breaking social, environmental and economic performance indicators, ASG's back-end algorithms are wildly complex, but the front-end results – meaningful vehicle ratings and distinguished awards – are forthright and consumer-friendly. ASG's Automotive Performance Index is for automotive consumers what Google is for web users.

Nissan to add Rogue, Murano hybrid around 2015

Except for the limited-production, Toyota-assisted Altima Hybrid, Nissan has pretty much shied away from hybrid vehicles, but that is all about to change. As a part of a plan to launch a total of 15 electrified vehicles by 2016, Nissan is launching the Pathfinder Hybrid, which goes on sale this fall, and we've heard in the past that the Altima will get another hybrid variant, as well. Now, Green Car Reports is confirming that the Murano and the smaller Rogue (seen above in next-gen prototype phase) will both receive hybrid powertrains.
Though riding on different platforms, both hybrid crossovers could share the system being introduced in the Pathfinder, consisting of a 2.5-liter supercharged four-cylinder engine, a 22-horsepower electric motor and a lithium-ion battery pack. There is still no word on when the next-gen Murano will arrive, but the 2014 Nissan Rogue will be introduced on September 10.