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What the electric Hummer's size and weight means for its efficiency

The 2022 GMC Hummer EV Edition 1. Tim Levin/Insider If you think driving a pint-sized Nissan Leaf is as good for the planet as driving a huge electric Hummer, think again.  The GMC Hummer EV uses significantly more electricity than other EVs, meaning it produces more pollution upstream.  The electric Hummer weighs 9,000 pounds and its battery weighs as much as a Honda Civic. The new electric Hummer rolls through town without a deafening engine rumble or a cloud of toxic fumes, but it doesn't exactly tread lightly.  The colossal truck weighs an astonishing 9,000 pounds. (Think two Toyota Tacomas, three Honda Civics, or 24 Shaquille O'Neals.) Moreover, the GMC Hummer EV is in many ways a supersized gas guzzler for a new era. It repackages many of the same flaws of hulking SUVs and trucks of years past — and proves not all zero-emission cars are created equal. EVs can be energy guzzlers too On the whole, electric cars use less energy than gas-powered ones. But they aren't all equally efficient.  No surprise here: The Hummer needs more electricity than any other EV on the market to move its elephantine frame. The Environmental Protection Agency rates the pickup at 47 MPGe (miles per gallon of gasoline-equivalent). For comparison, the Tesla Model 3 sedan is nearly three times as efficient, earning a rating of 132 MPGe. The Ford F-150 Lightning, another electric truck, gets 70 MPGe.  This has real consequences: Since the US gets 61% of its energy from oil, coal, and natural gas, the more electricity a car needs, the more pollution it creates upstream.  As the Union of Concerned Scientists put it: "Both EV cars and trucks are much cleaner than their gasoline counterparts, but electric trucks are responsible for more global warming emissions than electric cars simply because trucks are larger and heavier."  The 2022 GMC Hummer EV Edition 1. Tim Levin/Insider The Hummer EV is also resource-intensive to manufacture, requiring a ginormous (and weighty) battery to give people the 300-plus miles of range they desire. You could produce three Chevrolet Bolts with the same battery cells consumed by one Hummer.

NHTSA closes 4-year GM investigation, issues common sense advisory [w/video]

Since January 2011, the National Highway Traffic Safety Administration has been investigating a possible problem with corroding brake lines in General Motors' GMT800-platform models, like the Chevrolet Silverado and Suburban and GMC Sierra, in states with salt on their roads in the winter. However, as opposed to launching a full recall of millions of vehicles, the government is issuing a common-sense safety advisory to all drivers in snowy states to keep their vehicle's undercarriage clean. It even has a video explaining things. "Older-model vehicles, often driven in harsh conditions, are subject to corrosion over long periods of time, and we need owners to be vigilant about ensuring they, their passengers, and others on the roads are safe," said NHTSA Administrator Mark Rosekind in the announcement of the end of the investigation. The agency was clear in its report that "brake line corrosion seen in the GM vehicles was not unique," and the government "has not identified a defect that would initiate a recall order." Instead NHTSA is advising drivers, especially those of vehicles from before 2007, to wash their vehicle's undercarriage in the winter and spring to remove salt or other de-icing chemicals. It also recommends regular checks by a mechanic to make sure everything is in proper order. According to the investigation documents, for just the GMT800 platform models, NHTSA found 3,645 complaints of brake line corrosion, which included allegations of 107 crashes and 40 injuries. The issue was found to be more common in vehicles over 10 years old. GM has released a statement (embedded below) that the company "supports the consumer advisory from NHTSA urging regular maintenance and care of brake lines on older vehicles." NHTSA Closes Investigation into Brake-Line Failures NHTSA 13-15 Thursday, April 9, 2015 Agency issues safety advisory on preventing undercarriage corrosion WASHINGTON – The Department of Transportation's National Highway Traffic Safety Administration (NHTSA) today issued a Safety Advisory and consumer video encouraging owners of model year 2007 and older trucks, SUVs and passenger cars to inspect brake lines and thoroughly wash the underside of their vehicles to remove corrosive salt after the long winter in order to prevent brake-line failures that increase the risk of a crash.

GM announces four new recalls, 507k vehicles affected

428,211 of these vehicles are located in the United States, 57,706 are in Canada, and 20,956 are in other markets. In its seemingly never-ending string of recalls, General Motors today announced four new campaigns covering some 506,873 vehicles. 428,211 of these vehicles are located in the United States, 57,706 are in Canada, and 20,956 are in other markets. First up is the 2013-14 Chevrolet Cruze, which is being recalled because "the inflator in the driver's front airbag may rupture and/or the airbag may not inflate during airbag deployment," according to GM. This could shoot metal pieces of the inflator into the cabin, injuring occupants during a crash. What's more, GM says that if the airbag does not inflate, this could, obviously, increase the risk of injury to the driver. A total of 29,019 Cruzes are affected in the United States, with an additional 4,066 units being recalled in Canada. The largest of the four recall campaigns involves four-wheel-drive versions of the 2014-15 Chevrolet Silverado and GMC Sierra, as well as the 2015 Chevy Tahoe, Suburban, GMC Yukon and Yukon XL. A grand total of 392,459 vehicles are affected in the US, with 53,607 more found in Canada, and an additional 20,874 in other markets. Here, the transfer case "may electronically switch to neutral without input from the driver," GM states. The automaker adds that if this occurs while the vehicle is moving, power will not be sent to the wheels. On top of that, if the vehicle is parked, it may roll away unexpectedly if the parking brake has not been set. In smaller recall news, 4,794 2013-14 Chevy Caprice police cars and SS sedans are being recalled in the US. According to GM, "If the motor gear teeth become stripped, the wipers may not operate" in these models. Lastly, 1,939 2014 Chevy Corvettes fitted with the FE1 or FE3 suspension are being recalled in the US "to repair a possible insufficient weld in the rear shocks that could lead to a fracture and/or reduce the shocks' service life." In Canada, 33 additional vehicles are affected, as are 82 more 'Vettes that were exported to other markets. General Motors is aware of one injury regarding the Cruze recall, and is not aware of any crashes or injuries in the other three recalls. Scroll down for the automaker's official release. GM Announces Four Vehicle Recalls DETROIT – General Motors (GM: NYSE) today announced four safety recalls covering 428,211 vehicles in the United States.