If a defendant in a criminal prosecution for DUI/DWI is found guilty, the defendant can appeal the conviction (finding of guilt) or the sentence (punishment such as jail or prison, restitution, community service, probation, etc.). An appeal is not another trial—it is an opportunity to raise specific errors that might have occurred at trial. For example, a convicted defendant might claim on appeal that the judge made an incorrect ruling on an important question such as whether to exclude or suppress certain evidence, or whether to impose a certain sentence or punishment. Appeals are complex processes and generally require the expertise of a licensed lawyer.

On appeal a conviction may be reversed, a sentence may be altered, or the case may be sent back to the trial court for a new trial or a new sentence. There are generally two potential levels of appellate review following a defendant’s conviction in a state court or federal trial court—an intermediate court (often called the court of appeals) and the highest court, or court of last resort (often the supreme court). Although a defendant usually has an automatic right to appeal a final conviction to the intermediate court of appeals, in many jurisdictions the highest court has discretion on whether to accept an appeal to review a case—known as discretionary review.

In Texas, a defendant found guilty of DUI/DWI has the right to appeal the conviction or sentence. The appeal is not a retrial but a process to challenge legal errors that may have occurred during the trial, such as improper evidence rulings or sentencing issues. Appeals require the skills of an attorney due to their complexity. If successful, an appeal can result in the reversal of the conviction, modification of the sentence, or a remand for a new trial or sentencing. Texas has two levels of appellate review: the intermediate appellate courts, known as the Courts of Appeals, and the highest court, the Texas Court of Criminal Appeals. Defendants have an automatic right to appeal to the intermediate court, but the Court of Criminal Appeals has discretionary review, meaning it can choose whether to hear an appeal.