Chart based on 267 Mercury Mountaineer and 587 Kia Optima repairs.
Chart based on 217 Mercury Mountaineer 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 Mercury Mountaineer 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.
Mercury Mountaineer and Kia Optima Problems and Repair Histories