If anything, the pace of new Tesla model changes seem to have increased of late. Over the last year, a 60-kilowatt-hour battery option has reappeared, a new 100-kwh battery was launched, followed by a sequence of software updates to make it faster, and all Autopilot sensors were replaced with new hardware. Now, quietly, Tesla has launched a new... New Tesla Model S 100D version rated at 335 miles of electric range
If anything, the pace of new Tesla model changes seem to have increased of late. Over the last year, a 60-kilowatt-hour battery option has reappeared, a new 100-kwh battery was launched, followed by a sequence of software updates to make it faster, and all Autopilot sensors were replaced with new hardware. Now, quietly, Tesla has launched a new... 
For 50 years now, California has been at the very forefront of reducing vehicle emissions. It was doing so before the U.S. Environmental Protection Agency was even formed, and its powerful Air Resources Board has been a vital force in getting plug-in electric vehicles onto the state's roads. Despite the national political currents, the state will... 
With auto-industry lobbyists pushing to have the Trump Administration roll back current and future emission and fuel-economy rules, automakers clearly see the new U.S. regime as more friendly to the needs of business. And it's possible that indeed, the EPA's vehicle emission limits, the NHTSA's fuel-economy rules, and various other regulations (on... 
This might not seem to be the most convenient moment to restart production of a gaggle of diesel cars. The Volkswagen diesel scandal continues to unfold, and last week the EPA accused Fiat Chrysler Automobiles (FCA) of failing to reveal eight separate software routines that altered the behavior of diesel engines in Jeep and Ram vehicles... 
It's been a busy week for U.S. agencies as they release information on their final actions before a new administration takes office. Yesterday the U.S. Department of Justice reportedly opened a criminal probe into the actions of Fiat Chrysler Automobiles over the emission certification of its diesel engines. The investigation follows an... 
Seven days before the advent of a new presidential administration, the U.S. Environmental Protection Agency has locked in planned auto-emission standards through 2025. The emission limits tie directly to fuel-efficiency rules issued by the NHTSA, effectively requiring those rules to stay the same as well. Announcing its final determination this... ![Consumer Reports tests 2015 Volkswagen Jetta TDI diesel in 'cheat mode,' October 2015 [video frame]](http://images.hgmsites.net/tmb/consumer-reports-tests-2015-volkswagen-jetta-tdi-diesel-in-cheat-mode-october-2015-video-frame_100530187_t.gif)
The $14.7 billion diesel-emission settlement among Volkswagen and regulatory agencies required VW to buy back or modify almost half a million TDI vehicles from model years 2009 through 2015. While the buybacks have received the most attention—and most owners are expected to take them—the company also submitted plans to modify its... 
President-elect Donald Trump's choice of Oklahoma attorney general Scott Pruitt to lead the Environmental Protection Agency (EPA) indicates that his administration will pursue radically different energy policies from its predecessor's. Pruitt is a climate-science denier, and has sued the agency he is being asked to lead multiple times. He has... 
As President-elect Donald Trump's inauguration draws closer, confusion still surrounds many of his possible energy policies. During the campaign, Trump indicated that he supported ethanol, even while he called for expansion of domestic fossil-fuel production. In January, he said he supported the Renewable Fuel Standard, which mandates that growing... 
Lobbyists for big automakers, both domestic and foreign, make no secret about their desire for lower fuel-economy standards. One argument presented to support a lowering of standards is that the cost of compliance with current rules will be passed on to consumers in the form of higher new-car prices. Carmakers must implement efficiency-boosting... 
When it comes to regulations governing the auto industry, the Obama administration does not plan to go gentle into that good night. The outgoing administration has pushed through a number of new regulations, some related to fuel efficiency, before President-elect Donald Trump takes office next month. The move is likely a hedge against the incoming... 
If there were any doubt that president-elect Donald Trump supports fossil fuels and does not believe in the scientific consensus of climate change, his pick to head the U.S. Environmental Protection Agency should put it to rest. Yesterday, he named Oklahoma attorney general Scott Pruitt, a 48-year-old Republican, as his nominee for EPA... 
A week ago, the EPA recommended that U.S. vehicle emission standards stay put for the years 2022 through 2025. According to the Technical Assessment Report the agency issued in July, automakers have so far quite successfully met standards in place since 2012 to cut emissions of the climate-change gas carbon dioxide. And, the report concluded, they... 
Last week, the U.S. Environmental Protection Agency ruled that existing emissions limits for passenger cars for 2022 through 2025 should remain in place. It's a decision that is already opposed by lobbyists representing the auto industry, and possibly by the incoming Trump Administration. Sure enough, one automaker says it has already begun talks... 
This week, the U.S. Environmental Protection Agency (EPA) said it would maintain current Corporate Average Fuel Economy (CAFE) standards for 2022 to 2025. The decision was praised by environmental groups, but likely won't receive as warm a reception from the industry. CAFE standards are up for a midterm review, and auto-industry lobbyists spent... 
The 2017 Toyota Prius Prime plug-in hybrid's tenure as the most energy-efficient car on sale in the U.S. turned out to be short. The Toyota recently took the title of most energy-efficiency vehicle available in the U.S. away from the BMW i3, which had held it since 2014. But now there's a new kid on the block. DON'T MISS: Hyundai Ioniq electric... 
Car buyers remain aware that the real-world fuel economy of new vehicles may not match the ratings on their window stickers. The year-old Volkswagen diesel scandal has also shown the vulnerability of laboratory emissions tests to deliberate cheating by manufacturers. But the news isn't entirely bad. DON'T MISS: EPA reports show automakers meeting...