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...