Chart based on 277 Hummer H3 and 587 Kia Optima repairs.
Chart based on 200 Hummer H3 and 322 Kia Optima repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
Don't infer Hummer H3 or Kia Optima problem frequency from what you see on this page. Many lucky owners have had no repairs, and their cars are not shown.
Hummer H3 and Kia Optima Problems and Repair Histories