June 18 (Reuters) - The top U.S. oil and corn industry

lobby groups said on Tuesday they were suing the administration

of President Joe Biden over its plans to slash planet-warming

tailpipe emissions from cars and trucks, arguing the regulations

will cause economic harm.

The U.S. Environmental Protection Agency this spring

finalized new rules for models of semi-trucks, buses and other

heavy-duty vehicles released from 2027 to 2032 in a bid to cut 1

billion tons of greenhouse gas emissions through 2055.

It also announced regulations to reduce emissions from cars

and other light and medium duty vehicles in a separate set of

standards the administration projects will require that up to

56% of all car sales will be electric between 2030 and 2032.

The American Petroleum Institute (API), which is the top

U.S. oil and gas lobby group and includes Exxon Mobil ( XOM ) as

a member, said on Tuesday it was suing the EPA over its truck

regulations, just days after having filed a separate federal

lawsuit over the agency's light and medium duty vehicle rules.

"The EPA is forcing a switch to technology that simply does

not presently exist for these kinds of vehicles - and even if it

were someday possible, it will almost certainly have

consequences for your average American," said Ryan Meyers, API's

senior vice president and general counsel about Tuesday's

lawsuit.

The National Corn Growers Association, the American Farm

Bureau Federation and the Owner-Operator Independent Drivers

Association said they had joined Tuesday's suit, arguing the

administration was abandoning biofuels.

"EPA has tried to impose a one-size-fits-all approach to

addressing climate change by prioritizing electric vehicles over

other climate remedies like corn ethanol," said National Corn

Growers Association President Harold Wolle.

The EPA did not immediately respond to a request for

comment.

Transportation is responsible for more than a quarter of

national greenhouse gas emissions, and the regulations form a

major part of Biden's broader plan to decarbonize the United

States by mid-century.

The Renewable Fuels Association, a major ethanol lobby

group, and National Farmers Union also joined the legal

challenges to the tailpipe regulations by filing a lawsuit on

Monday challenging EPA's light and medium duty vehicle rules.

"EPA grossly exceeded its statutory authority by

finalizing regulations that effectively mandate the production

of EVs, while blatantly excluding the ability of flex fuel

vehicles and low-carbon, high-octane renewable fuels like

ethanol to achieve significant vehicle emissions reductions,"

said RFA President and CEO Geoff Cooper.

The oil and ethanol industries often clash over U.S.

biofuels mandates, but tend to join forces against electric

vehicles to preserve continued use of internal combustion

engines.