As of November 1, 2026, a new Oklahoma DUI law is officially in effect, creating another way for drivers to face felony charges for multiple DUI offenses.
Senate Bill 1543 (SB 1543) allows prosecutors to combine two or more separate DUI violations committed by the same person within one year into a single Class C2 felony offense.
One of the most significant changes is that a person may face felony charges even without a previous DUI conviction. Here’s what Oklahoma drivers should know about the new law and how it affects DUI cases moving forward.
What Is Senate Bill 1543?
Senate Bill 1543 is a new Oklahoma law that changes how certain repeat DUI offenses can be prosecuted.
Governor Kevin Stitt approved the bill in May 2026, and it took effect on November 1, 2026. It amends 47 O.S. § 11-902, Oklahoma’s primary DUI statute.
Under the new provision, qualifying DUI violations may be prosecuted together rather than as separate offenses. If the violations occurred in different counties, the combined charge must be filed in the county where the last violation occurred. Any pending charge for an underlying violation in another county must then be dismissed.
Previously, Oklahoma’s repeat DUI felony provisions generally required a prior DUI conviction or deferred judgment. SB 1543 creates an additional way for prosecutors to pursue felony charges when multiple DUI violations occur within a one-year period.
Can You Get a Felony DUI Without a Prior Conviction?
Yes. Under SB 1543, a prior DUI conviction is not necessarily required for prosecutors to pursue a felony charge involving multiple violations. For example, if someone commits a DUI and then faces another DUI charge within one year, prosecutors may be able to combine those violations into a single Class C2 felony charge, even if the first case has not yet been resolved.
Despite the change, it’s not automatic – the elements of the underlying offenses must still be proven and the defendant may still challenge the charges and evidence.
What Are the Penalties Under SB 1543?
A conviction for an aggregated DUI offense under SB 1543 is classified as a Class C2 felony.
Potential consequences include:
- Felony sentencing under Oklahoma law.
- A fine of up to $2,500.
- An alcohol and drug assessment and evaluation.
- Compliance with recommended treatment at the defendant’s expense.
Beyond criminal penalties, a felony DUI conviction can have consequences for employment, professional licenses, driving privileges, and other parts of a person’s life. The specific consequences depend on the circumstances of the case, the defendant’s criminal history, and other applicable legal requirements.
How Does SB 1543 Compare to Oklahoma’s Existing DUI Laws?
SB 1543 is not the first significant change to Oklahoma’s DUI laws in recent years.
On November 1, 2025, Oklahoma expanded its aggravated DUI laws, creating additional circumstances in which a DUI may be charged as a felony. These changes include factors like high blood alcohol concentration, certain dangerous driving behaviors, and situations involving minor passengers.
Those changes exclusively focused on aggravating circumstances surrounding a single DUI offense, whereas SB 1543 focuses on multiple violations occurring within one year.
The new law does not replace Oklahoma's existing DUI provisions or repeat-offense rules. Instead, it adds another way for prosecutors to pursue felony DUI charges.
Facing DUI Charges Under Oklahoma’s New Law?
With SB 1543 now in effect, drivers facing multiple DUI charges within a short period may face more serious potential consequences than they would have under Oklahoma’s previous laws.
DUI cases can involve questions about the legality of the stop, testing procedures, evidence of impairment, and whether the elements of the charges can be proven.
Importantly, an arrest does not automatically mean a conviction. Our criminal defense attorneys can review the circumstances of your case, explain the charges you’re facing, and help you understand your legal options. If you’re facing DUI charges in Oklahoma, contact our team today.