My wife and I have travelled over 20,000 miles in the last 4 years while either driving an RV or towing a TT. I have never had an incident where my credit card did not work at the pump, except at a gas station in the middle of Montana that had very, very old non-digital pumps and I had to pay inside. We charge ALL of our fuel on my credit card while travelling. Never had a problem at a modern station.