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As Seen On






Texas DWI Manual
By Attorney Deandra Grant
Fighting DWI charges can present many challenges, not only for the defense, but prosecutors as well. This is why it is important to be armed with the necessary knowledge so you understand the DWI process.
Attorney Deandra M. Grant is the co-author of the Texas DWI Manual, offering legal advice to both clients and fellow attorneys.
Learn MoreAllen Multiple DWI Lawyers
A second DWI in Texas is not just twice the problem. It is a different statute, a different punishment range, a different jail floor, a different interlock posture, and a different relationship with the court system. A third DWI is a third-degree felony. And because Texas has no lookback period for DWI priors, the prior conviction from fifteen or twenty years ago is just as relevant in 2026 as one from last year.
Deandra Grant Law represents clients facing second, third, and felony repeat DWI charges in Allen, Plano, McKinney, Frisco, and throughout Collin County. Call (214) 225-7117 to discuss your case.
Texas Has No Lookback Period
The single most consequential feature of Texas repeat DWI law is also the one most commonly misunderstood. Many states have a “lookback period” which is a statutory window (often 5, 7, or 10 years) during which a prior conviction counts for enhancement purposes, after which the prior becomes irrelevant. Texas used to have such a provision (former Penal Code § 49.09(e) limited the enhancement window to 10 years in certain circumstances). That provision was repealed in 2005.
Under current Texas law, every prior DWI conviction in the defendant’s lifetime counts toward enhancement under § 49.09. A 2003 DWI counts as a prior on a 2026 arrest. A DWI from another state counts if it meets the statutory definition. A Penal Code § 49.05 Flying While Intoxicated, § 49.06 Boating While Intoxicated, § 49.07 Intoxication Assault, or § 49.08 Intoxication Manslaughter all count as priors under § 49.09(c). A DUI by Minor under TABC § 106.041 is different law and does not count.
This no-lookback rule drives every strategic decision in a Texas repeat DWI case. A client who assumes their old DWI has “gone away” is usually wrong.
Penal Code § 49.09 — The Enhancement Statute
Repeat DWI penalties are governed by Penal Code § 49.09, which enhances the base § 49.04 DWI offense based on prior convictions.
Second DWI — Penal Code § 49.09(a)
- Class A misdemeanor
- 30 days to 1 year in county jail.
- Fine up to $4,000 (criminal fine).
- Transportation Code § 709.001 DWI fine of $4,500, in addition to the criminal fine.
- Driver’s license suspension of 180 days to 2 years under Transportation Code § 521.344.
- Mandatory 72 hours to 30 days in county jail as a condition of probation under § 49.09(h) (cannot be waived).
- 80 to 200 hours community service.
- Mandatory ignition interlock under CCP Article 17.441 as a bond condition; typically required for any license reinstatement.
Third DWI — Penal Code § 49.09(b)
- Third-degree felony
- 2 to 10 years in the Texas Department of Criminal Justice.
- Fine up to $10,000 (criminal fine).
- Transportation Code § 709.001 DWI fine of $4,500 ($6,000 if BAC 0.15 or above).
- Driver’s license suspension of 180 days to 2 years.
- Mandatory minimum 10 days in jail as a condition of probation under § 49.09(h).
- 160 to 600 hours community service.
- Mandatory ignition interlock.
- Permanent loss of firearm rights on conviction under federal and state law.
Fourth and Subsequent DWI — Habitual Offender Enhancement Available
A fourth or later DWI remains a third-degree felony under § 49.09(b); there is no separate “fourth DWI” statute. The critical additional exposure on a fourth DWI comes from Penal Code § 12.42, the habitual offender enhancement:
- § 12.42(a). A defendant with one prior final felony conviction faces enhancement of the third-degree DWI to a second-degree punishment range (2 to 20 years).
- § 12.42(d). A defendant with two prior final felony convictions, each for an offense occurring after the prior became final, faces enhancement to a 25-year to 99-year or life range.
In practice, a defendant with several prior DWI felonies can face an indictment that charges DWI 3rd with § 12.42 enhancement paragraphs, producing a punishment range completely unrelated to what most people expect from a “DWI charge.” Identifying and, where possible, attacking the enhancement paragraphs is often the central defense task in a fourth-or-subsequent DWI case.
Mandatory Jail Minimums — Even on Probation
One of the counterintuitive features of Texas repeat DWI law is that even when a defendant receives community supervision (probation), the statute requires a mandatory jail sentence as a condition of the probation. Under § 49.09(h):
- Second DWI on probation: minimum 3 days in county jail
- Third DWI on probation: minimum 10 days in county jail.
- These are statutory floors. The court cannot waive them.
This structural feature of Texas repeat DWI sentencing surprises many defendants. A “probation” on a second or third DWI is not probation in the ordinary sense. It includes a mandatory jail term that must be served.
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Mandatory Ignition Interlock
Code of Criminal Procedure Article 17.441 requires ignition interlock as a condition of bond in repeat DWI cases. The interlock must be installed on every vehicle the defendant operates. The requirement applies from the time of bond until final case disposition (which can be many months for felony DWI cases).
After disposition, ignition interlock continues to play a central role. Transportation Code § 521.246 governs interlock requirements for occupational licenses, license reinstatement, and conditions of community supervision. A defendant who has no practical ability to operate a vehicle with an interlock is often unable to drive legally during the case and for extended periods afterward. This has cascading consequences on employment, family obligations, and economic stability.
Transportation Code § 709.001 Statutory DWI Fines
Separate from the criminal fine, Transportation Code § 709.001 imposes a civil-style statutory fine on every DWI conviction:
- First DWI conviction: $3,000.
- Second or subsequent DWI conviction within 36 months: $4,500.
- DWI conviction with BAC 0.15 or above: $6,000.
The § 709.001 fine replaced the old Driver Responsibility Program surcharge after the DRP was eliminated by HB 2048 (2019). Unlike the surcharge, the § 709.001 fine is assessed once at the time of conviction rather than as a recurring multi-year obligation.
Administrative License Revocation on Repeat DWI
The ALR process runs parallel to the criminal case and is often more aggressive on repeat DWI:
- Failed test (BAC 0.08 or higher) on a driver with a prior alcohol-related enforcement contact: 1 year suspension under § 524.022.
- Refusal on a driver with a prior alcohol-related enforcement contact: 2 years suspension under § 724.035.
- The 15-day deadline to request an ALR hearing applies. Missing it results in automatic suspension.
- The ALR hearing is a critical discovery tool — it allows cross-examination of the arresting officer under oath months before trial.
How Repeat DWI Cases Are Defended
Challenging the Priors
Before exposure on a second or third DWI can be established, the state must prove the prior convictions. Prior judgments can be challenged for:
- Constitutional invalidity (waiver of counsel, voluntariness of plea, Boykin v. Alabama, 395 U.S. 238 (1969) requirements).
- Identity — whether the person named in the prior judgment is the defendant.
- Finality — whether the prior is actually final or is still on appeal or subject to collateral attack.
- Whether the prior offense qualifies under § 49.09(c).
- Whether a prior from another state meets the Texas definitional requirements.
A successful challenge to one prior can reduce a felony third DWI to a Class A misdemeanor second DWI. On a fourth DWI with habitual offender allegations, a successful challenge can reduce exposure from first-degree (25 to life) to second-degree or third-degree range.
Fourth Amendment and Article 38.23 Suppression
Every DWI case begins with a stop. Stops, detentions, field sobriety testing, arrests, breath and blood testing, and warrants are all subject to constitutional review and Texas’s exclusionary rule under CCP Article 38.23. Suppression motions frequently dispose of DWI cases or compel favorable resolutions.
Forensic Attack on Breath and Blood Testing
Ethanol analysis in Texas is performed by headspace gas chromatography with flame ionization detection (GC-FID). Attack points include sample collection, preservative balance, chain of custody, calibration, column chemistry, retention time, internal standards, and measurement uncertainty.
Field Sobriety Testing
Deandra Grant is a Standardized Field Sobriety Test instructor. She teaches the same curriculum administered to law enforcement officers and can identify administration errors that render HGN, Walk-and-Turn, and One-Leg Stand results unreliable.
DWI with Child Passenger
Any DWI committed with a passenger under 15 is a state jail felony under § 49.045, regardless of the defendant’s prior record. This is a separate felony offense that can coexist with the § 49.04 or § 49.09 enhancement analysis, adding state-jail-felony exposure that is not reflected in the basic repeat DWI ladder.
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Where Collin County Repeat DWI Cases Are Heard
Second DWI cases (Class A misdemeanor) in Collin County are filed in the Collin County Courts at Law. Third, fourth, and subsequent DWI cases (third-degree felony or higher) are filed in the Collin County Criminal District Courts. Both sit at the Collin County Courthouse, 2100 Bloomdale Road, McKinney. The Collin County Criminal District Attorney’s Office prosecutes all criminal cases in Collin County.
Frequently Asked Questions
My first DWI was fifteen years ago. Does it still count?
Yes. Texas has no lookback period for DWI priors. Every prior DWI conviction in the defendant’s lifetime counts for § 49.09 enhancement purposes. This is one of the most common misunderstandings in Texas repeat DWI cases.
Can I get probation on a second DWI?
Usually yes. Community supervision is available on a second DWI (Class A misdemeanor) — but § 49.09(h) requires a mandatory 3-day jail term as a condition of probation. The probation is not jail-free. The mandatory minimum is statutory and cannot be waived.
Can I get probation on a third DWI?
Probation is available on a third DWI (third-degree felony), but § 49.09(h) requires a mandatory 10-day jail term as a condition. And the state is not required to agree to probation. Collin County prosecutors vary in their willingness to agree to probation on repeat DWI cases depending on the facts, the defendant’s record, and the quality of the defense presented.
Does deferred adjudication help on a repeat DWI?
Generally no. HB 3582 (2019) authorized deferred adjudication for certain first-offense DWIs with BAC below 0.15, but deferred adjudication is not available for any repeat DWI under § 49.09 and remains unavailable for all felony DWI offenses. On a repeat DWI, plea bargain choices are typically probation with the mandatory jail floor, or confinement.
Will I lose my license on a second or third DWI?
You may both through ALR and if convicted. Administrative suspensions of 1 to 2 years attach under Transportation Code Chapters 524 and 724 based on failed-test or refusal and prior alcohol-related contacts. Conviction suspensions of 180 days to 2 years attach under § 521.344. An occupational license for work and essential activities is usually available with proper petition and ignition interlock.
Does an out-of-state DWI count as a prior in Texas?
Yes, if it meets the Texas definitional requirements. The out-of-state offense must be “substantially similar” to a Texas § 49 offense. Convictions from states with materially different DWI laws sometimes do not qualify. Whether a specific out-of-state prior counts is often a litigable question.
About Deandra Grant Law
Deandra Grant Law is a Texas criminal defense firm with offices in Allen, Dallas, Fort Worth, Denton, Waco, and Rockwall. Our DWI defense practice is built on the forensic science and trial experience that repeat DWI cases actually require.
Deandra M. Grant, Managing Partner
- More than 30 years in practice, focused on criminal defense and DWI
- Former prosecutor
- J.D.; M.S. in Pharmaceutical Sciences
- Graduate Certificate in Forensic Toxicology
- ACS-CHAL Forensic Lawyer-Scientist from the American Chemical Society
- Standardized Field Sobriety Test (SFST) Instructor
- Texas Super Lawyer since 2011
- Author of 17 law books including The Texas DWI Manual
- Executive Director, DUI Defense Lawyers Association (DUIDLA)
Douglas E. Huff, Partner
- ACS-CHAL Forensic Lawyer-Scientist
- Digital forensics and electronic evidence training
- Extensive North Texas DWI trial experience
James Lee Bright, Of Counsel
- National federal criminal defense practice, including federal post-conviction proceedings in serious-felony DWI and intoxication cases
- Admitted to all four Texas federal districts, the District of Columbia, the Fifth Circuit Court of Appeals, and the Supreme Court of the United States
Contact Our Allen Multiple DWI Attorneys
A second or third DWI is not a case to handle without experienced counsel. The enhancement paragraphs, the mandatory minimums, the interlock requirements, and the felony-conviction consequences all produce exposure that is multiples of what a first DWI carries. The earlier counsel is involved, the more options remain.
Call Deandra Grant Law at (214) 225-7117 to schedule a consultation. We serve Allen, Plano, McKinney, Frisco, and all of Collin County from our Allen office.
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“Deandra Grant Law – Criminal & DWI Defense handled my case with diligence and professionalism. Deandra Grant’s reputation is stellar and now I know why. She has a team of individuals who provide quality service.”
N. Coulter

(214) 225-7117
Experienced DWI Defense
