Our first time booking a car through Discover, and it will unfortunately be our last. We booked an automatic car at Vienna airport - the price we found on Discover was a bit suspiciously low but we went for it anyway - that was mistake number 1... When we arrived at the airport and got shuttled by a representative of the rental agency to their office, he informed us that it was a mistake since that agency does not keep any automatic cars. I cannot drive stick and I didn't want my partner to be driving alone for 6 days. So we definitely couldn't take the manual car that he offered us to have at the (still very low) price that we booked for. We called Discover on the spot and they were completely useless - "you have to file a claim". So we did the reasonable thing when you're stranded at an airport ahead of a roadtrip that was already planned out - we got a car on the spot from a different agency for 3 times the price we booked for. As a side note, the representative of the agency we booked from was super helpful and even drove us back to the airport even though we ended up not doing business with him. Also thank god for U-Save rental agency at Vienna airport who had a car available and gave us a decent price without booking ahead. We talked to Discover representatives on the phone during the trip, who did nothing to help and just asked that we file a claim with the invoice of the car we actually paid for. Then the email saga began, with a lot of back and forth, where Discover "generously" refunded us the insurance we paid them up front - for a car we DIDN'T GET - and only after some very strong words reimbursed us only about a third of the amount we ended up paying. This after several emails where we basically had to haggle over the amount they were supposed to pay us back. Guess we'll never see the rest of the money they owe us. Never again.