The 2021 Jeep Gladiator EcoDiesel has a lower fuel economy

The folks over at TruckTrend got their hands on a 2021 Jeep Gladiator EcoDiesel Rubicon for an entire week of fun. That’s when they discovered that the diesel engine didn’t exactly improve the truck’s fuel economy. 

New 2021 Jeep Gladiator EcoDiesel | FCA
New 2021 Jeep Gladiator EcoDiesel | FCA

To make room for the 5.1-gallon diesel exhaust fluid (DEF) storage tank, the EcoDiesel-equipped Jeep Gladiator has a smaller tank size. It only holds 18.3 gallons, but this shouldn’t cause a problem. 

The Jeep Gladiator Rubicon has an EPA estimated rating of 21 mpg in the city, 27 mpg on the highway, and 24 mpg combined. That should have provided a driving range of about 400 miles. However, TruckTrand logged 250 miles with an average of 18.82 mpg combined. That’s a lot lower than 24 mpg combined. 

Perhaps they really held the pedal to the metal, but the mystery is still at large. The Rubicon Gladiator is only rated at 1 mpg less than the Overland or Sport models according to the EPA, but that fails to explain coming up so short. 

Another mystery includes how their truck had less than 1,200 miles on the odometer, and it was halfway out of DEF. A 2,400-mile ranger on 5 gallons doesn’t make a lot of sense either. The diesel engine may not be worth it. 


2020 Jeep Gladiator Fuel Tank Capacity

For customers near the Cincinnati, OH, area, the all-new 2020 Jeep Gladiator features a pretty impressive fuel-tank capacity compared to the other Jeep models in the lineup. With a fuel-tank capacity of up to 22 gallons per tank, this new Jeep Gladiator-a modern pickup truck with excellent power and off-roading capabilities-will provide you with more opportunities every time you take it out for a drive.

Long Range Fuel Tanks

Looking to increase your range? Our steel expedition fuel tanks can take you farther and offer you added safety and security on your overland adventures. You’ll also experience the convenience of fewer fill-ups and lower fuel costs.

Built in Australia by cerified craftsement, our integrated tanks are designed to work with North American vehicles and emissions systems (without CELs or codes). Go the distance with this safe and secure fuel storage option.

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