Stellantis has a new turbocharged four-cylinder engine. Called the Hurricane 4 Turbo, it was one of the first mass-produced engines to use a negative turbulent jet ignition (TJI) system. It produces 324 horsepower and 332 pound-feet of torque, and we’ll first see it in the updated 2026 Grand Cherokee that Jeep also revealed today.
TJI uses a small “cup-like” pre-chamber above each cylinder to initiate the ignition. Once ignited, the burning fuel expands into the standard combustion chamber, where faster and more complete burning occurs. Stellantis says the engine uses 10 percent less fuel while producing 20 percent more power than the brand’s current 2.0-liter four-cylinder engine.
The engine—with an aluminum block, oil pan, and timing cover—uses both port and direct fuel injection, features two spark plugs per cylinder, and has a variable geometry turbocharger that delivers up to 35 psi of boost. The compression ratio is 12:1 while running on regular 87 octane gasoline.
Stellantis says the engine produces 90 percent of its torque between 2,600 and 5,600 rpm, with 100 percent available from 3,000 to 4,500 rpm.
Photo by: Jeep
2026 Jeep Grand Cherokee updates
The engine will make its debut in the update 2026 Grand Cherokeewhich will go on sale later this year. It will come with a redesigned seven-slot front grille, redesigned headlights, and modified rear and lower fascias. Inside, the GC receives a larger 12.3-inch infotainment display with an available 10.3-inch passenger display.
pocket It simplified the 2026 Grand Cherokee lineup from five to just three: Laredo, Limited and Summit. The 3.6-liter Pentastar V-6 carries over to the base Laredo model, but if you upgrade to the Laredo Altitude, you can get the new turbocharged four-cylinder engine.
The automaker claims the new turbo-powered Grand Cherokee can travel up to 506 miles per tank and tow up to 6,200 pounds.
Photo by: Jeep
Jeep will continue to offer the Grand Cherokee L and the model’s plug-in hybrid powertrain, available on Limited, Summit and Trailhawk models. There are also three new colors available for the upcoming model: Steel Blue, Copper Shino, and Fatom Blue.
Jeep will release pricing information later. Pricing for the 2025 Grand Cherokee starts at $38,460.
