Two fuel tanks, also called dual tanks, are installed in certain vehicles to increase driving range, improve weight distribution, or separate fuel types for specialized applications. While not common in regular passenger cars, they are frequently found in off-road SUVs, pickup trucks, expedition vehicles, and heavy-duty commercial rigs.
Examples of Vehicles with Two Fuel Tanks
Toyota Land Cruiser Models
• 80 Series, 100 Series, and 70 Series (in select markets) often come with factory-installed sub tanks.
• Designed for remote travel in regions like Australia, Africa, and the Middle East.
Nissan Patrol
• Patrol Y60, Y61, and Y62 variants in certain markets have auxiliary tanks.
• Popular for overlanding and desert expeditions.
Pickup Trucks
• Older Ford F-Series models, like the F-250 and F-350, often had two tanks, one behind the cab and one at the rear.
• Some Chevrolet/GMC trucks offered dual tanks in heavy-duty configurations.
Expedition & Utility Vehicles
• Toyota Troop Carrier and Land Rover Defender expedition builds.
• Heavy-duty trucks like the Mercedes-Benz Unimog and certain commercial haulers.
Aftermarket Dual Tank Conversions
• Many off-roaders install aftermarket sub tanks for vehicles like the Toyota Hilux, Ford Ranger, and Jeep Wrangler to increase range for remote travel.
Why Two Tanks Are Useful
• Extended Range – Crucial for crossing long distances without fuel stops.
• Weight Distribution – Can improve stability by balancing fuel load.
• Fuel Type Separation – Some vehicles carry petrol in one tank and diesel or aviation fuel in another for specialized equipment.