Why 87% of Mailed Expired Plates Challenges Win

Chicago's own hearing records show what actually decides these tickets — and one avoidable mistake costs 1,405 drivers who had good cases.

Built from Chicago’s own hearing records, obtained under the Freedom of Information Act. Last updated August 20, 2026.

About 87% of mailed challenges to Chicago expired plates tickets end with the driver found not liable. That figure comes from 51,667 decided cases — mail-in challenges to tickets issued between 2023 and 2025, decided cases only — pulled from the city's own hearing records through a Freedom of Information Act request.

That's a remarkably high rate. But buried inside it is a finding that should make anyone holding one of these tickets pay attention: 1,405 people lost not because their plates were actually expired, but because their letter never named a defense the city recognizes.

What wins, almost every time

Two reasons account for nearly all of the 44,765 not-liable rulings:

Affirmative Compliance Defense is what happens when a driver shows the registration was actually current on the ticket date — the plates weren't expired, or were renewed very shortly after and the driver can document it. This alone drove 54% of all wins.

Violation is Factually Inconsistent covers situations where something about the ticket itself doesn't hold up — the plate number, the vehicle description, or other details that don't match the actual record. This was the reason in 40% of wins.

Together, these two reasons account for nearly all of the not-liable outcomes on this ticket type.

What loses — and the one that stings

The largest loss reason — 65% of liable rulings — is straightforward: the plates were expired and the driver couldn't show otherwise.

The second-largest is different in kind. "Failed to Select one of the Codified Defenses" accounts for 20% of every liable ruling, and 1,405 drivers landed there. Those drivers did not lose on the facts. They lost because their letter never named one of the defenses the city ordinance actually recognizes. The hearing officer has a fixed menu of defenses to choose from. If your letter doesn't invoke one of them — even if your situation fits — the officer has nothing to hang a win on.

That is an avoidable loss.

What this means if you're holding this ticket

The city writes this offense on the ticket as "EXPIRED PLATE OR TEMPORARY REGISTRATION".

Before you write your challenge letter, ask yourself which of these is true:

• Your registration was actually current when you got the ticket. This is the Affirmative Compliance Defense. Attach proof: your renewal receipt, the date it was processed, the confirmation from the Secretary of State. Name the defense explicitly.
• Something about the ticket doesn't match your vehicle. Wrong plate number, wrong make, wrong color. This is the Violation is Factually Inconsistent path. Document exactly what doesn't match.
• The vehicle wasn't yours. The plates were stolen. You corrected the defect before the hearing. These each have a corresponding codified defense — name it.

A flat "my plates weren't expired" with nothing attached is far weaker than the same claim backed by a document. Hearing officers have a signed citation in front of them. Your letter needs to give them a specific defense to rule on and a document to confirm it.

What to do today

Pull your renewal record — the Secretary of State's website shows registration history. If you renewed before the ticket date or very close to it, that document is your case. Print it, attach it to your mail challenge, and name the Affirmative Compliance Defense in plain language. If something about the ticket itself is wrong, write down exactly what doesn't match and attach anything that shows it. Send both together before your response deadline.

SELECT disposition, COUNT(*) AS cases FROM hearings WHERE violation_code IN ('0976160B')
      AND contest_method = 'Mail'
      AND CAST(substr(issue_datetime,
  instr(issue_datetime, '/') + 1
  + instr(substr(issue_datetime, instr(issue_datetime,'/')+1), '/'), 4) AS INTEGER) BETWEEN 2023 AND 2025
      AND disposition IN ('Not Liable', 'Liable') GROUP BY 1sql

SELECT reason, COUNT(*) AS cases
    FROM hearings
    WHERE violation_code IN ('0976160B')
      AND contest_method = 'Mail'
      AND CAST(substr(issue_datetime,
  instr(issue_datetime, '/') + 1
  + instr(substr(issue_datetime, instr(issue_datetime,'/')+1), '/'), 4) AS INTEGER) BETWEEN 2023 AND 2025
      AND disposition = 'Not Liable'
    GROUP BY 1 ORDER BY cases DESCsql

SELECT reason, COUNT(*) AS cases
    FROM hearings
    WHERE violation_code IN ('0976160B')
      AND contest_method = 'Mail'
      AND CAST(substr(issue_datetime,
  instr(issue_datetime, '/') + 1
  + instr(substr(issue_datetime, instr(issue_datetime,'/')+1), '/'), 4) AS INTEGER) BETWEEN 2023 AND 2025
      AND disposition = 'Liable'
    GROUP BY 1 ORDER BY cases DESCsql