Can I drive someone else's car with an FR-44 in Florida?
Yes — with an active FR-44 on file and the owner's permission, you can drive a car you do not own. What changes is whose insurance pays first: the car owner's policy is primary, and a non-owner FR-44 sits behind it as secondary liability.
Liability coverage follows the vehicle before it follows the driver. Borrow a car, cause an accident, and the owner's policy responds first, up to its limits. Your non-owner FR-44 is excess over that — it covers bodily injury and property damage liability above what the owner's policy pays, up to the 100/300/50 Florida requires of you. It does not repair the car you were driving. That is the owner's collision coverage, or a rental company's damage waiver, and never your FR-44.
Permission is not a formality. A non-owner FR-44 is written to cover you in a vehicle you are driving with the owner's consent. Take a car without it and you are outside the use the policy describes, which is exactly the opening a carrier needs to deny a claim.
Regular use is where non-owner policies quietly fail people. The product is built for occasional driving of cars you neither own nor have routine access to. Drive the same car several times a week, or keep it parked at your address, and most carriers will want you listed as a driver on the owner's policy — or want you on an owner FR-44 instead. A car in your household that you can take whenever you like is often treated as available to you whatever the title says, and that is a question to settle before you buy rather than after a claim.
If a court or the DHSMV ordered an ignition interlock, that order narrows this further. The device has to be installed in the vehicle you operate, so a friend's car without one is not a car you may drive while the restriction sits on your license. The interlock and the FR-44 are independent requirements and neither satisfies the other. A narrow exception exists for an employer's vehicle driven for work, and the interlock side is a DHSMV question rather than an insurance one.
So before you buy, tell us who owns the car you actually drive, how often you drive it, and whether a device order is on your license. That decides whether non-owner or owner FR-44 is the policy that genuinely covers you — and once it is the right one, we file the FR-44 electronically the same day you purchase.
Sources: Fla. Stat. § 324.023, Fla. Stat. § 324.021, Fla. Stat. § 316.1937, Fla. Stat. § 322.2715, FLHSMV DUI FAQ.