WASHINGTON, June 5 (Reuters) - Senate Republicans on

Thursday proposed eliminating fines for automakers who fail to

meet Corporate Average Fuel Economy rules as part of a

wide-ranging tax bill, a boost to Detroit automakers selling

gas-powered vehicles.

Last year, Chrysler-parent Stellantis ( STLA ) paid $190.7

million in civil penalties for failing to meet U.S. fuel economy

requirements for 2019 and 2020 after paying nearly $400 million

for penalties from 2016 through 2019. GM previously paid

$128.2 million in penalties for 2016 and 2017.