The BAC limit is 2.38 mg/l in El Salvador - this applies to both visitors and residents. Your BAC level is a measurement of the percentage of alcohol in your bloodstream. This information is used to determine how inebriated an individual is. Driving a vehicle with a BAC higher than 2.38 mg/l is against the law in El Salvador and you will be deemed as ‘driving under the influence’. El Salvador has strict laws against individuals who drink-drive when they are younger than the legal drinking age of 18.