An automatic sounds like a good option, although we'd normally recommend a diesel for towing a caravan. You probably won't find a hybrid that can tow your caravan, unless you look at much bigger cars like the Toyota RAV4. Hybrids usually have very low towing capacities (if they can tow at all). A diesel hatchback like a Ford Focus or Volkswagen Golf would probably be your best option. Both are available with very good automatic gearboxes, should be cheap to run and can tow a small caravan.