While most modern cars use a single fuel tank, some vehicles, especially those built for long-distance travel, off-road expeditions, or heavy work, are designed with two gas tanks. This setup increases fuel capacity and driving range without frequent refueling.
Toyota Land Cruiser Models
Certain Land Cruiser models, such as the 80 Series, 70 Series, and specific diesel variants, come equipped with a main tank and a sub (secondary) tank. These tanks can often be switched via an in-cabin control, allowing drivers to extend range during remote expeditions.
Heavy-Duty Pickup Trucks
Some older Ford F-Series, Chevrolet/GMC heavy-duty trucks, and Dodge/Ram pickups were available with dual fuel tank systems, particularly in the 1980s and 1990s. These were common for work trucks covering long distances between fuel stops.
Commercial & Utility Vehicles
Long-haul vans, box trucks, and certain ambulances use dual tank systems to avoid downtime for refueling during long operations. Examples include Ford E-Series vans and certain Isuzu NPR trucks.
Expedition & Overland Builds
Many overlanding SUVs and trucks are fitted with aftermarket auxiliary tanks. Popular upgrades for adventure travel include ARB Long Ranger tanks and similar products that integrate with the main fuel system.
Specialty Off-Road Models
Some SUVs, such as specific Toyota Hilux and Nissan Patrol variants in global markets, include dual tanks from the factory, catering to remote and rugged driving environments.