County Line Mitsubishi is an automobile dealership that has an inventory of new and pre-owned vehicles. Its service department provides automotive services and features diagnostic and repair equipment. The dealership also has a parts department that stocks an inventory of original equipment manufacturer-recommended and certified parts and accessories. Its finance department offers online credit application and payment estimation options. County Line Mitsubishi's automotive services include tire rotations, transmission replacements, brake inspections, air conditioning performance checking, oil changing and wheel alignments. It also inspects fuel and air filters, shocks, spark plugs, cooling systems and timing belts. The dealership additionally offers appointment scheduling and parts order placement options. County Line Mitsubishi maintains a location in Middlebury, Conn.