32.5 Million Engines Later, Honda’s Ohio Plant Turns 40

Honda is celebrating 40 years of engine production at its Anna Engine Plant in Ohio. What started as a modest motorcycle engine facility in the mid-80s has grown into the company’s largest engine plant in the world. As Honda shifts toward hybrid and electric power, shown by models like the new hybrid Prelude, the Anna plant is evolving to keep pace with the future of mobility.

A Legacy Built On Millions Of Engines

Since opening its doors in 1985, the Anna Engine Plant has built over 32.5 million engines. That includes everything from basic four-cylinders for the Civic to high-output V6s found in Acura performance cars and SUVs. Back then, it was a 200,000 square-foot facility with fewer than 100 workers. Today, it covers 2.8 million square feet and supports nearly 3,000 employees. The plant currently produces a wide range of four-cylinder and V6 engines, including turbocharged and hybrid variants. It also makes essential components like cylinder heads, camshafts, crankshafts, and the precision pulleys used in Honda’s CVTs.

From Civics To Supercars

Engines from Anna have powered some of Honda’s most iconic vehicles. The plant builds the 190-hp 1.5-liter turbo used in the Civic, Accord, CR-V, and Acura Integra, as well as the 315-hp 2.0-liter turbo found in the Civic Type R and Integra Type S. It even produced the 500-hp 3.5-liter twin-turbo V6 that lived in the second-generation Acura NSX supercar. But Anna’s output isn’t all about performance. It’s also behind the hybrid engines that help fuel-efficient models like the Accord and CR-V deliver impressive fuel economy. It’s clear as day that the Anna Engine Plant has played a huge role in shaping Honda and Acura’s lineup across North America.

Helping Build Honda’s Electric Future

While gas and hybrid engines are still a major focus, Anna is already preparing for Honda’s next chapter. The plant has started producing aluminum battery cases for upcoming EVs, using cutting-edge processes like megacasting, Minimum Quantity Lubrication machining, and friction stir welding. These battery cases will be shipped to the Marysville Auto Plant, where they’ll be paired with battery modules to power the next generation of Honda and Acura electric vehicles, including the Honda Prologue. Full EV production is set to begin in Ohio in 2026. With four decades of experience and a clear role in Honda’s future, the Anna Engine Plant continues to be a key part of the company’s evolution.