In Portugal, the law allows you to have a small amount of alcohol, but the limits are very strict and the penalties are severe. The general Blood Alcohol Content (BAC) limit is 0.5 g/l, which for most people roughly equates to one small beer (330ml) or a small glass of wine. However, for "Novice" drivers (those who have held a license for less than 3 years) and professional drivers, the limit is even lower at 0.2 g/l, effectively a zero-tolerance policy. If you are caught between 0.5 and 0.8 g/l, you face a fine of up to €1,250 and a driving ban. Above 1.2 g/l, it becomes a criminal offense punishable by prison time and a permanent criminal record. In 2026, Portuguese police frequently conduct "balão" (breathalyzer) checkpoints, especially on weekends and near tourist hubs like the Algarve. The safest "High-Fidelity" advice is to avoid drinking entirely if you plan to drive, as even a slightly larger craft beer or a generous pour of Port wine can easily push you over the legal limit.