Mazda offers plug-in hybrid powertrains in some of its largest SUVs, but now it's weighing new fuel-saving tech including conventional hybrid systems for these models.

Two German companies have signed a strategic partnership to convert around 1,000 new diesel engines to hydrogen by the end of 2028 and to start large scale conversion of existing vehicles' engines ...

The Ram Power Wagon only offers a gas-fed Hemi V-8, but more customers are asking for a diesel version, and we're told it's ...

Cummins has officially developed its first ever gas engine. Here are the important specs to know and which trucks the engine ...