Jeep's redesigned 2026 Grand Cherokee Summit pairs a new Hurricane turbo four-cylinder engine with a fresh platform, but testing reveals the powertrain falls short of delivering the performance punch Stellantis promised. The Hurricane, a 2.0-liter turbocharged four-cylinder, produces 270 horsepower and 295 pound-feet of torque—respectable numbers on paper that don't translate to the driving experience buyers expect from the Grand Cherokee nameplate.
The engine struggles to mask its displacement disadvantage. Real-world acceleration feels sluggish compared to the previous-generation 3.6-liter V6, which produced 290 horses but felt considerably more responsive. The turbo lag is noticeable during highway merging and passing maneuvers, where drivers encounter a brief delay before boost pressure builds. This hesitation undermines the Grand Cherokee's traditional role as a premium three-row hauler that drivers actually enjoy piloting.
Fuel economy improvements don't compensate for the performance deficit. The Hurricane achieves better EPA ratings than the V6, but owners shopping at the Summit trim level typically prioritize capability and refinement over marginal MPG gains. The turbo four's character feels out of place in a vehicle positioned above mainstream compact SUVs.
The broader trend toward smaller, electrified engines affects Stellantis across its lineup. Ford, General Motors, and Toyota pursue similar downsizing strategies to meet emissions regulations and fleet economy targets. But execution matters. Jeep's Hurricane engine simply doesn't deliver the linear power delivery or low-end torque that made previous Grand Cherokee models feel substantial.
The 2026 Grand Cherokee still offers three-row seating, available hybrid powertrain options, and a refined interior. However, the base Hurricane configuration emerges as a compromise that satisfies neither performance enthusiasts nor efficiency