Ignition-interlock expenses

Use this page to separate ignition-interlock expenses from other DUI-related expenses and verify each amount with the lawyer, court, agency, insurer, or provider that actually charges it.

Documents or quotes to collect

  • Installation quote
  • Monthly lease/service fee
  • Calibration/service schedule
  • Removal fee
  • Violation/lockout charges
  • Agency order

Questions before paying

  • Which provider must be used?
  • Which charges recur monthly?
  • What documentation proves successful completion?

Do not rely on a national average

DUI-related costs vary by jurisdiction, case stage, provider, and services actually used. A written local quote or official fee schedule is more useful than a national “average DUI cost.”