I've had this issue a few times over the last couple of weeks and really don't trust how much fuel the DIS is claiming I have left in the tank. I put £40 in last Thursday and Saturday morning the DIS was showing empty, then later on in the afternoon it kept creeping back up. Over the last couple of days my car has been showing as having about 100 miles left in the tank which I don't trust. Has anyone had this issue and what was the outcome? I've sold my car to a mate so can't really give him it with a dodgy fuel guage. I've done a little search and I think the issue is the sender in the tank. How easy is this to fix and cost?