Great help from friendly clerk at pick up. Car shifted poorly and lagged to accelerate. Drop off was hard to find at Frankfurt Airport. Google maps shows only rental car return, located at Terminal 2. Attendant at Terminal 2 sent me to Terminal 1. To reach Terminal 1 Rental Car Return, you must drive in the same single lane as ALL other cars going to pick people up on the Arrivals level. There was an airport parking attendant at the round about, letting cars through one at a time, as space became available at the Arrivals level. I, and all other rental cars, had to wait in line with all the other vehicles before we could finally access the Return Area. It took well over 25 minutes, and I watched over 100 cars get let through, 1 at a time, until my turn. I will never rent a car into Frankfurt Terminal 1 again.