The 2020 Ram 1500 has a fuel tank capacity of 23.0 to 26.0 gallons (87–98 liters), depending on the trim. The most common size is 26.0 gallons, used on 26 trims.
A full tank is good for roughly 552–650 highway miles or 437–520 miles around town, going by the EPA ratings.
020 gal40 gal
26.0 gal · Bigger than 90% of 2020 models we list.
Tradesman 4dr Crew Cab 5.6 ft SB3.6L 6cyl mild hybrid 8A · RWDMPG 20 / 25Range 520 / 650 mi
3.6L 6cyl mild hybrid 8A
RWD
26.0 gal98 L
20 / 25
520 / 650 mi
Tradesman 4dr Crew Cab 6.3 ft SB3.6L 6cyl mild hybrid 8A · RWDMPG 20 / 25Range 520 / 650 mi
3.6L 6cyl mild hybrid 8A
RWD
26.0 gal98 L
20 / 25
520 / 650 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 2020 Ram 1500 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 21 MPG, a full 26.0-gallon tank covers about 546 miles.
Gauge
Gallons
Highway miles
City miles
Full
26.0
624
494
3/4
19.5
468
371
1/2
13.0
312
247
1/4
6.5
156
124
1/8
3.3
78
62
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 714 gallons, roughly 27 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.
What it costs to fill up a 2020 Ram 1500
$111.02to fill the 26.0-gallon tank from empty with regular, at this week's US average of $4.27 a gallon.
At 26.0 gallons, the 1500's largest tank ranks fifth of the six 2020 pickups compared here. The Toyota Tundra carries the most (38.0 gal) and the Nissan Titan the least (26.0 gal).
Other 2020 pickups of a similar size, one model per brand.
2020 Ram 1500 fuel system recalls
NHTSA lists 1 fuel-system recall for the 2020 Ram 1500, out of 14 recalls in total. A recall applies only to the vehicles named in it, so check your VIN.
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 2020 Ram 1500?
The 2020 Ram 1500 holds between 23.0 and 26.0 gallons, depending on the trim. 26.0 gallons is the usual size; the smaller 23.0-gallon tank is on the Big Horn 4dr Quad Cab 4WD SB.
How many gallons and liters does the 2020 Ram 1500 gas tank hold?
The 2020 Ram 1500 tank holds 87–98 liters, or 23.0–26.0 gallons in US gallons.
Which 2020 Ram 1500 has the biggest gas tank?
The 26.0-gallon tank is on the Big Horn 4dr Crew Cab 4WD 5.6 ft SB, Big Horn 4dr Crew Cab 4WD 6.3 ft SB, Big Horn 4dr Crew Cab 5.6 ft SB and 23 other trims. The smallest tank, 23.0 gallons, is on the Big Horn 4dr Quad Cab 4WD SB.
Does 4WD change the 2020 Ram 1500 gas tank?
No. 4WD and RWD versions of the 2020 Ram 1500 use the same 23.0–26.0 gal tank.
How far can a 2020 Ram 1500 go on a full tank?
About 552–650 miles on the highway and 437–520 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 2020 Ram 1500 go on a quarter tank?
About 156 highway miles or 124 in town from the 26.0-gallon tank, which has roughly 6.5 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2020 Ram 1500 take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2020 Ram 1500?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 26.0-gallon tank from empty costs $111.02. It ranges from $96.20 in the Gulf Coast to $153.14 in California.
How much does a full tank of gas weigh in a 2020 Ram 1500?
About 161 pounds for the 26.0-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2020 Ram 1500 have a bigger gas tank than the GMC Sierra 1500?
No. The 2020 GMC Sierra 1500 holds up to 28.0 gallons; the 2020 Ram 1500 holds up to 26.0.
Has the 2020 Ram 1500 had a fuel pump or fuel system recall?
Yes. NHTSA lists 1 fuel-system recall for the 2020 Ram 1500: 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. Range is tank size times EPA MPG.
Fuel prices: U.S. Energy Information Administration, week of October 26, 2026 (this week's prices).