The Energy Department “lacks statutory authority” to apply a multiplying factor that boosted the miles per gallon equivalent for electric vehicles, the ruling said. The 8th U.S. Circuit Court of ...

In July, President Donald Trump’s signature bill eliminated the penalties carmakers would have had to pay for not meeting fuel economy requirements. The car industry applauded the move, which, federal ...

As you may know, an engine's compression ratio is directly linked to its combustion efficiency. All else being equal, higher-compression engines tend to make more power while offering better fuel ...