Where is the fuel cap release on a citroen relay van?

The fuel cap release on a Citroën Relay van is typically located inside the vehicle, near the driver's seat. It is often a lever or button situated on the floor or on the side of the driver's seat. In some models, you may need to pull the lever to unlock the fuel cap, which can then be unscrewed. Always refer to the owner's manual for specific details related to your model.