The sixth generation of GM's V-8 engines are expected to deliver stronger performance, improved fuel economy and reduced emissions.

General Motors announced an $888 million investment in its Tonawanda Propulsion plant in Buffalo, NY, to support the production of the sixth generation of GM’s V-8 engines, used in its full-size trucks and SUVs. The new engines are expected to deliver stronger performance, improved fuel economy and reduced emissions, thanks to advancements in combustion and thermal management technologies.

This marks the largest single investment GM has ever made in an engine plant and positions Tonawanda as the second GM facility—after the Flint Engine plant—to produce the company’s newest V-8 powertrains. Production of the sixth-generation engines at Tonawanda is slated to begin in 2027.

“Our significant investments in GM’s Tonawanda Propulsion plant show our commitment to strengthening American manufacturing and supporting jobs in the U.S.,” said GM Chair and CEO . “GM's Buffalo plant has been in operation for 87 years and is continuing to innovate the engines we build there to make them more fuel efficient and higher performing, which will help us deliver world-class trucks and SUVs to our customers for years to come.”

The investment will fund new machinery, equipment, tools and facility renovations to modernize operations at the Tonawanda facility, which is represented by UAW Local 774. In the interim, the plant will continue to manufacture the fifth generation of GM’s V-8 engines.

“This investment marks an exciting new chapter for our plant,” said , plant director at Tonawanda. “For generations, our team has demonstrated its commitment to manufacturing excellence. We are grateful for the opportunity to continue supporting the Western New York community and steadfast in our mission to deliver world-class propulsion systems to our customers.”

The move reflects GM’s ongoing strategy to support both advanced gasoline-powered vehicles and its growing EV portfolio as it transitions toward a more sustainable future.