The 2014 Ram 3500 has a fuel tank capacity of 31.0 to 32.0 gallons (117–121 liters), depending on the trim. The most common size is 31.0 gallons, used on 14 trims.
020 gal40 gal
32.0 gal · Bigger than 95% of 2014 models we list.
Tank figures are the manufacturer's rated capacity, sorted smallest tank first. The EPA doesn't rate fuel economy for heavy-duty pickups and vans (over 8,500 lb gross vehicle weight), so these trims have no official MPG or range.
What it costs to fill up a 2014 Ram 3500
$132.37to fill the 31.0-gallon tank from empty with regular, at this week's US average of $4.27 a gallon.
Other 2014 pickups of a similar size, one model per brand.
2014 Ram 3500 fuel system recalls
NHTSA lists 1 fuel-system recall for the 2014 Ram 3500, out of 15 recalls in total. A recall applies only to the vehicles named in it, so check your VIN.
Fuel system, dieselOct 8, 2014 · NHTSA 14V635000 · Chrysler Group Llc · 315,325 vehicles
Chrysler Group LLC (Chrysler) is recalling certain model year 2010-2014 Ram 2500, 3500, 4500, and 5500 trucks manufactured March 27, 2009, to September 5, 2013. In the affected vehicles, the electrical connectors of the diesel fuel heater may overheat.
Risk and remedy
Risk: If the connectors overheat, the fuel heater may leak fuel, increasing the risk of a fire.
Remedy: Chrysler will notify owners, and dealers will replace the harness side connector with a silver plated beryllium copper terminal service kit, and inspect the fuel heater for leaks, replacing it as necessary, free of charge. Chrysler issued interim notification to owners on December 8, 2014. The recall began on April 27, 2015. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is P65.
What is the fuel tank capacity of the 2014 Ram 3500?
The 2014 Ram 3500 holds between 31.0 and 32.0 gallons, depending on the trim. 31.0 gallons is the usual size; the 32.0-gallon tank comes on the Laramie 4dr Crew Cab 4WD LB (5.7L 8cyl 6A).
How many gallons and liters does the 2014 Ram 3500 gas tank hold?
The 2014 Ram 3500 tank holds 117–121 liters, or 31.0–32.0 gallons in US gallons.
Which 2014 Ram 3500 has the biggest gas tank?
The 32.0-gallon tank is on the Laramie 4dr Crew Cab 4WD LB, Laramie 4dr Crew Cab LB, Laramie Longhorn 4dr Crew Cab 4WD LB and 9 other trims. The smallest tank, 31.0 gallons, is on the Laramie 4dr Crew Cab 4WD SB.
Does 4WD change the 2014 Ram 3500 gas tank?
No. 4WD and RWD versions of the 2014 Ram 3500 use the same 31.0–32.0 gal tank.
What gas does the 2014 Ram 3500 take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2014 Ram 3500?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 31.0-gallon tank from empty costs $132.37. It ranges from $114.70 in the Gulf Coast to $182.59 in California.
How much does a full tank of gas weigh in a 2014 Ram 3500?
About 198 pounds for the 32.0-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2014 Ram 3500 have a bigger gas tank than the Ford F-350 Super Duty?
No. The 2014 Ford F-350 Super Duty holds up to 35.0 gallons; the 2014 Ram 3500 holds up to 32.0.
Has the 2014 Ram 3500 had a fuel pump or fuel system recall?
Yes. NHTSA lists 1 fuel-system recall for the 2014 Ram 3500: 14V635000 (fuel system, diesel). 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).