DWI Second Offense in Texas | Houston DWI Attorney

A second DWI in Texas is a Class A misdemeanor — with real teeth: a 30-day minimum, a mandatory ignition interlock, a longer license suspension, and a $4,500 state fine. And because Texas has no "lookback" period, a prior DWI counts no matter how old it is. But a second DWI is still very defensible, and one of the first questions we ask is whether that prior conviction is even valid and usable.

If you or a loved one has been charged with a second DWI in Houston, Harris County, or Galveston, Brian Foley and Luis Baez — former Vehicular Crimes prosecutors — can help.

What the Law Covers

A second DWI is charged under Texas Penal Code § 49.04 and enhanced under § 49.09, which raises the offense based on a prior DWI conviction. The State must prove both the new DWI and a valid prior conviction. There is no time limit on the prior — a decades-old DWI still counts.

Penalty Range

Item	Detail
Offense level	Class A Misdemeanor
Jail	30 days to 1 year (minimum 30 days; often probated)
Fine	Up to $4,000
State fine at conviction	$4,500
License suspension	Up to 2 years; occupational license may be available
Ignition interlock	Required (bond condition and after conviction)

How These Cases Are Defended

Attacking the prior. If the prior DWI conviction is invalid or the State can't properly prove it, the enhancement fails and the case may return to a first-offense posture.
Challenging the stop. An unlawful traffic stop leads to suppression of everything that followed.
Field sobriety and testing. We attack how the SFSTs were administered and challenge breath and blood results — calibration, maintenance, procedure, and Rule 702.
The 15-day license deadline. We request the ALR hearing to protect your license and lock in the officer's testimony.
Minimizing exposure. Where a conviction can't be avoided, we work to secure probation and minimize jail.

Collateral Consequences

A second DWI conviction is permanent, carries a mandatory interlock and higher insurance, and inches you toward a felony third offense. Because the prior and the current case can both be attacked, an experienced DWI defense is well worth it.

Related Charges

Why HCDA

Brian Foley is Board Certified in Criminal Law, and both he and Luis Baez are former prosecutors who served on the Vehicular Crimes Team. If you or a loved one has been charged with a second DWI in Houston, Harris County, or Galveston, contact Houston Criminal Defense Attorneys PLLC for a free, confidential consultation. Call or text (713) 703-1718.

Frequently Asked Questions

What is the punishment for a second DWI in Texas?

A second DWI is a Class A misdemeanor, punishable by up to one year in county jail and a fine up to $4,000, with a statutory minimum of 30 days confinement (which can often be structured as a condition of probation). It also carries a longer license suspension, a mandatory ignition interlock device, and a state fine of $4,500 at conviction.

Is there a time limit on how old a prior DWI can be?

No. For a second (or third) DWI, Texas law does not have a 'lookback' period — a prior DWI conviction counts no matter how long ago it happened. A DWI from decades ago can still be used to enhance a new charge, which is why challenging the prior and the current case both matter.

Will I have to use an ignition interlock device on a second DWI?

Almost certainly. Texas law generally requires an ignition interlock device as a bond condition on a second DWI even before conviction, and as a condition of probation or license reinstatement afterward. The device requires a breath sample to start the vehicle and logs the results.

Can a second DWI be reduced or dismissed?

Yes. A second DWI can be dismissed or reduced by challenging the traffic stop, the field sobriety testing, and the breath or blood evidence — and by attacking whether the alleged prior conviction is valid and usable. Even when a conviction can't be avoided, we work to minimize jail time and secure probation.

How long does a second DWI stay on my record?

A DWI conviction is generally permanent and cannot be expunged. That is exactly why fighting the charge before it becomes a conviction is so important. If the case is dismissed or you are acquitted, you may be eligible for an expunction that clears the arrest.

DWI — Second Offense