• Jeep Debuts A New Straight-Six ‘Hurricane’ Engine That Might Hint Towards The Demise Of V-8s

The new 3.0-liter, twin-turbo straight-six will achieve V-8 levels of performance while being a lot more efficient

At a time when automakers are going full throttle towards electrification, Jeep has decided to make the ICE lovers happy by introducing a new gasoline engine. The straight-six engine displaces three liters and will be offered in two power output stages. Is this good news for us, or an indication that the V-8 engines will be euthanized sooner than expected?

What’s The New Engine All About?

Jeep Debuts A New Straight-Six ‘Hurricane' Engine That Might Hint Towards The Demise Of V-8s
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Called ‘Hurricane’, the 3.0-liter, straight-six engine will be paired with two turbochargers. As mentioned above, it will be offered in two states of tune. In the Standard Output, it will make more than 400 horsepower and 450 pound-feet of torque. The High Output version, on the outer hand, will churn out more than 500 horsepower and 575 pound-feet of torque. Jeep has gone with “more than” in both cases, so don’t expect the outputs to be any lower than these numbers.

The lower state of tune is optimized for fuel economy and makes use of cooled exhaust gas circulation. Jeep also noted that the higher output version won’t be a gas guzzler even while towing. The engine is said to be 15-percent more efficient than the V-8s, but we’ll have to see how that will hold up in real-world conditions.

Here are some technical details about this engine:

  • Deep-skirt cast-aluminum block with a structural aluminum alloy oil pan
  • Cross-bolted steel main bearing caps that contain the strong rotating assembly of a forged steel crankshaft and forged steel connecting rods
  • Two low-inertia, high-flow turbochargers for rapid response to throttle inputs
  • Plasma Transfer Wire Arc (PTWA) coating in the cylinder bores for an ultra-thin, low-friction wear surface
  • High-pressure (5,075 psi/350 bar) direct fuel injection with pumps (single for SO/dual for HO) actuated by a dedicated chain-driven shaft
  • Dual overhead camshafts with wide-range, fully independent variable valve timing
  • Fuel-saving engine stop-start (ESS) function with robust starter motor for quick restarts
  • Engine-mounted water-to-air charge cooler with a dedicated cooling
  • Continuously variable displacement oil pump with integrated scavenge stage

What They Had To Say

"As Stellantis aims to become the U.S. leader in electrification, with a 50% battery-electric vehicle (BEV) sales mix by 2030, internal combustion engines will play a key role in our portfolio for years to come and we owe it to our customers and the environment to provide the cleanest, most efficient propulsion possible. The Hurricane twin-turbo is a no-compromise engine that delivers better fuel economy and an important reduction in greenhouse gases without asking our customers to give up performance," said Micky Bly, Stellantis head of propulsion systems.

A Straight-Six Returns After 16 Years

Everything You Didn't Know About The Jeep Comanche
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The last time a straight-six mill was spotted in a Jeep was back in December 2006. This was a 4.0-liter AMC engine that was considered one of Chrysler’s best engines. It was introduced in 1986 and was known for its durability and reliability. The company kept tweaking it throughout its life and eventually phased it out in 2006. Jeep has used this engine in vehicles like the Wrangler, Cherokee, Grand Cherokee, Wagoneer, and even the Comanche. This 4.0-liter straight-six was replaced by a 3.8-liter V-6 that was originally found in the Chrysler minivans. Will the new Hurricane straight-six achieve the same legendary status as the 4.0-liter straight-six? Only time will tell.

Final Thoughts

2022 Jeep Grand Wagoneer Exterior
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The first vehicles powered by this mill will arrive at dealerships this year. There’s no official word on which vehicles will get it, but MoparInsiders reported that the Grand Wagoneer could be the first one to get it. Since Jeep has mentioned that the engine will achieve V-8 level performance, but in a more efficient manner, expect it to soon start replacing some of the V-8s in the automaker’s lineup sooner than later.

Sidd Dhimaan
Sidd Dhimaan
Senior Editor, Truck Expert, EV Expert - sidd@topspeed.com
Sidd joined the Topspeed.com team in 2017 as an intern and in less than a year he earned a full-time position as an associate editor and junior automotive expert. Fast forward to today, and he is currently serving as a senior editor, pickup truck expert, and EV expert.  Read full bio
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