Biden Auto Efficiency Plans Appear Likely to Frustrate Activists

The Biden administration is set to propose stiffer limits on greenhouse gas emissions from cars that at least in the short term will fall short of what environmental activists have called for, according to two people familiar with the matter.

Initial requirements would be patterned on a compromise automakers reached with California regulators two years ago -- rather than immediately adopt the tougher mandates charted by former President Barack Obama in 2012.

The standards, drafted by the Environmental Protection Agency and now under White House review, are the centerpiece of the administration’s efforts to limit greenhouse gas emissions from the ...