Ignition Interlock Requirement but No Car?
Key takeaways
- An interlock has to go in a vehicle, which creates a problem for drivers without one.
- Some states accept a non-owner affidavit, and others extend the suspension until the interlock period is served.
- The SR-22 and the interlock are separate requirements, and you may need both.
An ignition interlock device (IID) is a breath tester wired to a car's ignition. Many states require one after a DUI, sometimes even after a first offense. If you don't have a car, the requirement can feel impossible. It isn't, but the answer depends on your state.
The usual options
| Option | How it works | Watch out for |
|---|---|---|
| Non-owner affidavit | You certify that you have no vehicle access, and you don't drive until the requirement is met | Not offered in every state, and driving any car may be a violation |
| Wait it out | You serve the interlock period as a suspension instead | It delays your full reinstatement |
| Family member's car | The IID goes in a relative's vehicle with their consent | They have to live with the device, and you may need to be on their policy |
| Buy an inexpensive car | You install the IID and switch to an owner's SR-22 policy | It costs more, and you lose non-owner pricing |
How this affects your SR-22
The SR-22 proves insurance, and the interlock controls the vehicle. You may need both. If you choose a non-owner affidavit, a non-owner SR-22 policy is usually still required to reinstate.
Interlock questions
What does an interlock cost?
Many providers charge an installation fee plus a monthly lease. Monthly costs commonly run around $70 to $150.
Can I drive a friend's car without an interlock?
If your license is restricted to interlock-equipped vehicles, no. Doing so can bring new charges.