The roaring revival of the V8 engine

• Car companies have been re-launching powerful V8 engines that were previously discontinued.
• Many high-powered trucks were removed from the US market as car companies switched to more fuel-efficient models.
• American automakers have led the charge on the V8 reboot.

The growl of a V8 engine — a deep, throaty roar that swells when a driver stomps the gas pedal — had for years been fading from auto assembly floors.

No longer.

The American automotive landscape is changing after a period that saw tighter emissions rules push automakers toward more efficient, quieter powertrains and prompted shifts away from big V8 engines.

But many of those regulations, including the federal EV incentives, have fallen away, leading automakers that once promised to discontinue the gas-hungry engines to reinvest in V8 offerings — especially in full-size trucks and performance cars.

The shift isn't a wholesale retreat from electrification, but it is a clear signal that legacy engines still matter, especially when profits are on the line.

Many auto enthusiasts are applauding the V8 revival.

"What makes V8s superior is the instant response when you hit the gas pedal," Justin Goldsberry, an enthusiast and author of the Automobile Innovations newsletter, told Business Insider. "Everything is immediate and highly responsive."

Over the past year, nearly every major American automaker has announced new investments or product updates tied to V8 engines. The industry's biggest bets centered on trucks and high-performance vehicles.

Detroit's Big Three lead the V8 push

Big, powerful cars and trucks have long been Detroit's best profit-makers. Many are now seeing a resurgence thanks to the renewed investments.

Ram Trucks brought back its Hemi V8 engine in August after pulling it from parts of its lineup just last year. This month, it relaunched the TRX, a V8-powered sport-oriented pickup the company markets as an automotive "apex predator."

Last May, General Motors stopped producing electric-vehicle batteries at its Western New York propulsion plant and restarted V8 engine production for trucks instead — a shift that required an $888 million investment.

Ford is also leaning into performance. The company told Business Insider it plans to add a new, faster trim to its V8-powered Mustang Dark Horse lineup, called the SC.

"You're starting to see some more performance V8s come back," Kevin Roberts, the director of market intelligence at CarGurus, told Business Insider. "Consumers wanted these cars. It was just a challenging economic choice because of the regulations that previously existed. But there are different rules now."

Data suggests demand for big, gas-powered vehicles — particularly trucks — remains strong. According to Cox Automotive, US consumers spent about $15 billion on full-size pickup trucks in December alone.

To Roberts, that appetite reflects a long-running truth about the American auto market: even as efficiency improves and electrification expands, the industry continues to rely on high-margin vehicles with internal-combustion engines to bankroll its transition.

The history of America's big engines

V8s are essential to American car-making culture.

First developed for US consumers in the early 1900s by Cadillac, V8s became synonymous with postwar expansion, cheap gasoline, and a domestic auto industry built around size and power. Ford helped popularize the engine in the 1930s, offering dramatic horsepower gains over smaller powertrains.

That popularity launched generations of American nostalgia.

"What customers actually want is more horsepower and more torque," said Dave Mann, a classic Ford Bronco owner and the president of motor oil company Performance Oil Technology. "That's where the money is, and that's the bread and butter for American automakers."

But the sales dominance didn't last forever.

As fuel prices surged and emissions rules tightened in the 1970s and 1980s, consumer preferences shifted. Smaller, more efficient vehicles — many built by Japanese automakers like Toyota and Honda — surged in popularity. By the early 2000s, V8 engines, which had once powered more than half of all American vehicle sales, accounted for less than 20%.

But the engine never disappeared. They just powered the auto industry's full-size and heavy duty trucks and hyper-powered racers.

A big shift is on the horizon

Big trucks — including the best-selling Ford F-150 and second-best-selling Chevy Silverado — still remain wildly popular.

And while the V8 is getting newfound attention from automakers, it's not the only shift happening in the industry.

A new wave of sub-$50,000 EVs are on the horizon, which will test Americans' appetite for EVs now that the $7,500 EV incentive is no more.

Meanwhile, gas-saving mild-hybrids are gaining popularity. The system pairs an electric motor with a standard gas-burning engine to reduce the amount of fuel needed on a trip.

That set-up is gaining more popularity, too. According to CarGurus data shared with Business Insider, hybrid sales jumped more than 41% in December compared to the same month the year before. Gas-only car sales rose a modest 1.4%.

"We've seen a large increase in hybrids," he said. "The US is starting to shake some of its gas-guzzler mindset."