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State has set its own emissions standards since 1970

EPA head Scott Pruitt was thought to be eliminating California's emissions waiver, but the Golden State's right to set its own mandates remains in place.

"Climate change is a global challenge. No county can place itself outside of this."

FCA is accused of not revealing software to defeat testing on Jeep Grand Cherokees and Ram trucks.

So, how does that compare with its most obvious rivals?

Vehicle costs may be $1,800 higher by 2025.

Automakers' compliance with CAFE may cost 150,000 jobs.

Claim is at odds with scientists, including the agency he oversees.

Pruitt's statement is at odds with scientific consensus.

Including 500 new chargers for US plug-in vehicle drivers.

Volkswagen will spend $2 billion over five years to add charging stations across the US and establish a "Green City."

Regulators delayed BMW diesel certification last year.

BMW, whose diesel-certification efforts were delayed last year, is getting ready to make diesel-powered cars and SUVs bound for America.

Changes are unlikely until adoption of new CAFE standards in 2025

Some automakers say mix of higher-octane fuel and higher-compression engines reduce emissions.

We don't know what impact biofuels are having on air quality.

How can the EPA make decisions about renewable fuels if it doesn't have data?

'Real world' MPG would have to rise to about 40 mpg under the current rules.

Don't tell the EPA it can't be done.

VW also faces penalties in Germany and South Korea.

Volkswagen has had a stop-sale on US diesel vehicles since September, and reached a settlement with the EPA in June.

The MPG scandal in Japan is spreading to our shores.

The EPA and CARB are requesting fuel economy info from Mitsubishi and want the company to do additional testing on some US models.

BlueTec pollution-control technology turns off at cooler temperatures, according to court filing.

Amid the aftermath of Volkswagen's diesel scandal, a lawsuit filed Thursday accuses Mercedes-Benz of diesel deceptions involving its BlueTec technology.

CARB Must Accept Plan Before Recall Could Start

VW has a recall plan for the 3.0-liter V6 diesel, but CARB and the EPA still need to test the solution before a recall could start.

FCA Went Shopping At Toyota, Tesla, And Honda

FCA is still on the bottom of the fleetwide fuel economy scale, which is why it had to spend big money on emissions credits.

EPA Finds They're Boosting Fuel Economy Faster Than Other Segments

Pickups and larger SUVs have the worst fuel economy of any vehicle types measured in a new report from the Environmental Protection Agency. But before beating up on these gas guzzlers too much, know that's only half the story.

After Volkswagen's Cheating, Agency Plans To Increase Oversight Of Entire Industry

Environmental Protection Agency officials said Friday they plan to increase oversight of the auto industry in the wake of Volkswagen's cheating. How? That's unclear.

The RFS Has Rules, But EPA Might Not Be Enforcing Them

A study from the University of Wisconsin-Madison finds that millions of acres of crops might be contributing to the country's ethanol supply, while being in violation of the rules under the Renewable Fuels Standard.

Six-Speed Transmission Helps Mazda Beat Out Honda, Hyundai Models

The next-generation Mazda2 will increase fuel economy by about 15 percent.

Automaker Makes Buildings More Energy-Efficient

Chevrolet is the only automaker to be awarded by EPA for emissions-reduction efforts in 2015.

A new study finds that by tweaking the design of the window sticker, the EPA could push more buyers towards fuel efficient vehicles, like hybrids and EVs.

Unclear Wording In SAE J-1634 Standard Doesn't Help

The EPA's test to certify the range of electric vehicles and plug-ins is a convoluted mess in many cases that often doesn't accurately evaluate driving range. Green Car Reports takes a look at the problem in a recent deep dive and finds a relatively simple solution.

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