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  4. New Jeep Engines: 3.0L EcoDiesel vs 3.6L Pentastar eTorque #FWOTY20

New Jeep Engines: 3.0L EcoDiesel vs 3.6L Pentastar eTorque #FWOTY20

New Jeep engines are the big news for 2020

Of the 11 new pickups and SUVs entered into the 2020 Four Wheeler SUV of the Year and Pickup Truck of the Year tests, three are new Jeeps. They are the '20 Jeep JT Gladiator Rubicon 4x4, '20 Jeep JL Wrangler Unlimited Sahara 4x4, and '20 Jeep JL Wrangler EcoDiesel Rubicon 4x4. Each is different in many ways, the most obvious of which is that one of them is a pickup. However, we're going to focus on the new Jeep engines in the three that, while all backed up by the new eight-speed automatic transmission, are very different engines.

The all-new Jeep Gladiator Rubicon is going head-to-head with a very competitive field of pickup trucks from three other brands during the 2020 Four Wheeler Pickup Truck of the Year test.
The 3.6L Pentastar V-6 engine in our '20 Jeep Gladiator Rubicon delivers 285 horsepower and 260 lb-ft of torque. In our test truck, it was optioned with the newly available ESS (auto start/stop mode).

The '20 Jeep Gladiator Rubicon gets its power from the 3.6L Pentastar V-6 engine that delivers 285 horsepower and 260 lb-ft of torque. In our test truck, it was optioned with the newly available ESS (auto start-stop mode). An all-new 3.6L Pentastar V-6 with mild-hybrid eTorque technology lies under the hood of the '20 Jeep Wrangler Unlimited Sahara. As it does for currently available eTorque 2.0L turbo inline-four, the mild-hybrid system gives the 3.6L V-6 engine a little kick in the pants right off the line to get it up and rolling fast.

The new '20 Jeep Wrangler Sahara Unlimited really pops in Firecracker Red.
An all-new 3.6L Pentastar V-6 with mild-hybrid eTorque technology lies under the hood of the '20 Jeep Wrangler Unlimited Sahara.

Our '20 Jeep Wrangler four-door Rubicon features the new 3.0L EcoDiesel V-6 engine, rated at 260 horsepower and 442 lb-ft of torque, with ESS standard. This third generation of the turbocharged 3.0L EcoDiesel V-6 engine delivers increased torque and horsepower, as well as fuel economy. The new EcoDiesel uses dual overhead camshafts (DOHC) with four valves per cylinder and a 60-degree angle between the cylinder banks. The block is cast with compacted graphite iron, which provides strength to dampen vibrations, but weighs less than gray cast iron, and it uses a forged-steel crankshaft and connecting rods for strength and durability.

Our '20 Jeep Wrangler four-door Rubicon features the new 3.0L EcoDiesel V-6 engine, rated at 260 horsepower and 442 lb-ft of torque, with ESS standard.

The new EcoDiesel has a new-generation water-cooled turbocharger with a variable geometry turbine (VGT) that increases efficiency and responsiveness, and redesigned cylinder-head intake ports with higher flow capability improve swirl and flow, increasing performance and fuel economy. The compression ratio has been optimized to 16.0:1 from 16.5:1, and high-pressure (29,000 psi/2,000 bar) direct-injection fuel-injector nozzles were redesigned to match the newly designed combustion chamber. Lightweight aluminum-alloy pistons were completely redesigned to include thinner rings and low-friction, diamond-like carbon coating on the pin and compression piston ring to reduce parasitic losses, and they are cooled on the underside via oil jets.

There's a lot to talk about when it comes to these new Jeep engines, including which is the best, but that will have to wait until the 2020 Four Wheeler SUV and Pickup Truck of the Year testing is complete. Stay tuned to fourwheeler.com for all the details and the winners!