Oklahoma DUI: Second Offense

Last reviewed: 2026-07-30

A second DUI in Oklahoma is generally classified as a felony (Class C2; second within 10 years).

• Jail: 1 year – 5 years (prison); mandatory min minimum 5 days imprisonment if treatment lacks a residential/inpatient component; IID required
• Fine: $0–$2,500 (up to $2,500)
• License suspension: 1-year revocation – 3 years+; hardship: IID via IDAP
• Ignition interlock: Required
• Oklahoma's felony-at-second rule is stricter than the felony-at-third/fourth norm elsewhere.

Lookback period: 10 years. Ten years measured from the date following completion of execution of the prior sentence or deferred judgment (§ 11-902). A second DUI within that window is a felony (Class C2) — a lower felony threshold than the felony-at-third/fourth norm in most states.