Willys Sport 4dr Crew Cab 4WD SB3.6L 6cyl 6M · 4WDMPG 16 / 23Range 352 / 506 mi
3.6L 6cyl 6M
4WD
22.0 gal83 L
16 / 23
352 / 506 mi
No trim matches all of these filters.
Tank figures are the manufacturer's rated capacity, sorted smallest tank first. Range is tank size times EPA city or highway MPG.
How far a 2021 Jeep Gladiator goes on a tank
Gallons left and the distance they cover at each mark on the fuel gauge, at EPA city and highway mileage. At the combined rating of 19 MPG, a full 22.0-gallon tank covers about 418 miles.
Gauge
Gallons
Highway miles
City miles
Full
22.0
506
352
3/4
16.5
380
264
1/2
11.0
253
176
1/4
5.5
127
88
1/8
2.8
63
44
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 789 gallons, roughly 36 full tanks.
Fuel gauges aren't perfectly linear and the low-fuel light comes on with a few gallons still in the tank, so plan your stop before the last eighth.
Other 2021 pickups of a similar size, one model per brand.
2021 Jeep Gladiator fuel system recalls
NHTSA lists 2 fuel-system recalls for the 2021 Jeep Gladiator, out of 8 recalls in total. A recall applies only to the vehicles named in it, so check your VIN.
Chrysler (FCA US, LLC) is recalling certain 2021-2023 Jeep Wrangler, Gladiator, and 2022-2023 Ram 1500 vehicles equipped with a 3.0L diesel engine. The high pressure fuel pump (HPFP) may fail.
Risk and remedy
Risk: Fuel pump failure can result in an engine stall, increasing the risk of a crash.
Remedy: Dealers will replace the HPFP and replace additional fuel system components, as necessary, free of charge. Owner notification letters were mailed October 17, 2023. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 01A.
Chrysler (FCA US, LLC) is recalling certain 2020-2022 Jeep Wrangler, Ram 1500, and 2021-2022 Jeep Gladiator vehicles equipped with 3.0L diesel engines. The high pressure fuel pump (HPFP) may fail, causing an engine stall.
Risk and remedy
Risk: An engine stall can increase the risk of a crash.
Remedy: Dealers will replace the HPFP and inspect and replace additional fuel system components, as necessary, free of charge. Owner notification letters were mailed October 17, 2023. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is Z96.
What is the fuel tank capacity of the 2021 Jeep Gladiator?
The 2021 Jeep Gladiator holds 22.0 gallons (83 liters) on every trim we list.
How many gallons and liters does the 2021 Jeep Gladiator gas tank hold?
The 2021 Jeep Gladiator tank holds 83 liters, or 22.0 gallons in US gallons.
How far can a 2021 Jeep Gladiator go on a full tank?
About 484–506 miles on the highway and 352–374 miles in town, going from full to empty at its EPA ratings. Expect less in practice, since nobody runs the tank dry.
How many miles can a 2021 Jeep Gladiator go on a quarter tank?
About 127 highway miles or 88 in town from the 22.0-gallon tank, which has roughly 5.5 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2021 Jeep Gladiator take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2021 Jeep Gladiator?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 22.0-gallon tank from empty costs $93.94. It ranges from $81.40 in the Gulf Coast to $129.58 in California.
How much does a full tank of gas weigh in a 2021 Jeep Gladiator?
About 136 pounds for the 22.0-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2021 Jeep Gladiator have a bigger gas tank than the Honda Ridgeline?
Yes. The 2021 Jeep Gladiator holds up to 22.0 gallons; the 2021 Honda Ridgeline holds up to 19.5.
Has the 2021 Jeep Gladiator had a fuel pump or fuel system recall?
Yes. NHTSA lists 2 fuel-system recalls for the 2021 Jeep Gladiator: 23V263000 (delivery · fuel pump); 22V767000 (delivery · fuel pump). Check your VIN at nhtsa.gov/recalls to see if your car is affected.
Sources
Tank sizes: manufacturer-rated capacities from US-market specifications, checked against independent references. Updated October 2026.
MPG and range: EPA ratings (fueleconomy.gov). Range is tank size times EPA MPG.
Fuel prices: U.S. Energy Information Administration, week of October 26, 2026 (this week's prices).