Fiat Chrysler Automobiles will phase out diesel vehicles from its passenger models by 2022, but will retain the option in its commercial vehicles, including its Ram pickups, the Financial Times is reporting.

The move comes as the cost of electrification is falling.

FCA and other automakers have also been facing rising costs for making the technology conform to more stringent federal emissions rules.

FCA will announce a four-year plan on June 1 where it will announce its plans to eliminate diesel, the outlet reported.