Where is the gas tank for a 1990 jaguar xjs?

The gas tank for a 1990 Jaguar XJS is located at the rear of the vehicle, just behind the rear axle. To access the fuel filler neck, you will find the fuel cap on the right side of the car, near the rear quarter panel. The tank itself is mounted underneath the trunk floor, requiring some disassembly of the trunk area for full access.