Dodge Durango fuel tank size

The Fluid Capacities chart gives one approximate fuel capacity for every engine:

From the 2026 Dodge Durango Owner's Manual (Fluid Capacities, page 276), read October 29, 2026. Other model years can differ; check your own manual.

What gas a Dodge Durango takes, by engine

Octane ratings in the manual use the (R+M)/2 method. The manual lists fuel by engine:

From the 2026 Dodge Durango Owner's Manual (Fuel Requirements, page 272; Fluids And Lubricants: Fuel Selection, page 275), read October 29, 2026.

The manual adds that a light knocking sound while using fuel of the required octane is not a cause for concern, but a heavy knocking sound means you should see a dealer immediately. Using gasoline with a lower than recommended octane number can cause engine failure and may void the New Vehicle Limited Warranty.

Ethanol, additives and gasoline quality

The 2026 manual says not to use E-85, gasoline containing methanol, or gasoline containing more than 15% ethanol (E-15), and to watch pump labels, which should clearly say if a fuel contains more than 15% ethanol. Using those blends may cause starting and drivability problems, damage critical fuel system components, cause emissions to exceed the applicable standard and/or turn on the Malfunction Indicator Light.

It recommends gasolines with detergents, corrosion and stability additives, TOP TIER Detergent Gasoline when available, and reformulated gasoline. It does not recommend fuel additives sold as octane enhancers, recommends gasoline without MMT, and says indiscriminate use of fuel system cleaning agents should be avoided. If you notice hard starting, stalling or hesitation, it suggests trying another brand of gasoline before considering service.

From the 2026 Dodge Durango Owner's Manual (Fuel Requirements; Reformulated Gasoline; Materials Added To Fuel; Gasoline/Oxygenate Blends; MMT In Gasoline; Fuel System Cautions, pages 272 to 274), read October 29, 2026.

How to refuel a Dodge Durango

There is no fuel filler cap: two flapper doors inside the filler pipe seal the system. The manual's steps:

• Open the fuel filler door by pushing on the outer edge of the door.
• Insert the fuel nozzle fully into the filler pipe; the nozzle opens and holds the flapper doors while refueling.
• Fill the vehicle. When the nozzle clicks or shuts off, the tank is full.
• Wait five seconds before removing the nozzle to let fuel drain from it.
• Remove the nozzle and push the fuel door all the way in to secure it in place.

The manual also warns never to add fuel with the engine running, not to top off the tank after filling, and to always place portable fuel containers on the ground while filling them.

From the 2026 Dodge Durango Owner's Manual (Refueling The Vehicle, page 147), read October 29, 2026.

When the low fuel light comes on

Per the 2026 manual, the Low Fuel Warning Light turns on and a chime sounds when the fuel level reaches approximately 2 gallons (7.5 L), and the light stays on until fuel is added. The manual also notes that certain conditions, such as a loose or missing gas cap or poor quality fuel, may turn on the Malfunction Indicator Light after engine start; the vehicle should be serviced if the light stays on through several typical driving styles.

From the 2026 Dodge Durango Owner's Manual (Low Fuel Warning Light; Engine Check/Malfunction Indicator Warning Light, page 103), read October 29, 2026.

Durango service at Elgin CDJR

Our Mopar service department services every Dodge, wherever it was bought, including routine maintenance, Express Lane oil changes, brakes, tires, batteries, recalls and warranty repairs. If your Durango knocks heavily, runs poorly after a fill-up, or shows a check engine light that stays on, schedule a visit and tell us what you are seeing.

Our service department is open Monday to Friday 7 a.m. to 7 p.m. and Saturday 7:30 a.m. to 4 p.m. Elgin CDJR is at 1500 W. Lake St. in Streamwood. Get directions.

Schedule service online, or see our Dodge service center page.