Ace Auto Doctor & Repair is a full-service preventive maintenance and automotive repair center that has been performing high quality, guaranteed automotive repairs for the Bettendorf, Davenport & Quad City areas since 1969. Ace Auto Doctor & Repair is a full-service preventive maintenance and automotive repair center that has been performing high quality, guaranteed automotive repairs for the Bettendorf, Davenport & Quad City areas since 1969.