Legal Alcohol Limit to Drive in 2026: Zero, 50 mg or 80 mg?

A border can halve what the law lets you drink before driving, or take it to nothing. The legal alcohol limit is 80 mg of alcohol per 100 ml of blood (0.08%) in England, Wales, Northern Ireland and 49 US states; 50 mg (0.05%) in Scotland, Utah and most of continental Europe; and 20 mg or zero in Norway, Sweden, Poland, Czechia, Slovakia and Hungary. The figure that applies is the one for the road you are on, not the one on your licence.

Units are the second trap. The same limit is written as a percentage in the US, as milligrams per 100 ml in the UK, and as grams per litre or per mille (‰) across much of Europe, while roadside tests usually measure breath, which has its own scale.

The British drink drive limit: one country, two numbers

GOV.UK publishes these figures, and Scotland has used the lower set since 2014:

A driver crossing from Cumbria into Dumfries and Galloway moves from one column to the other. The England figure is also higher than every other country in the table further down, all of which sit at 0.05% or lower; only Liechtenstein, Gibraltar and the Crown Dependencies match it.

The American alcohol driving limit: 0.08, except in Utah

In our US state data, 49 states set 0.08% for drivers aged 21 and over, and Utah sets 0.05%, the lowest in the country. For drivers under 21 every state is stricter: 0.02% in 37 states, 0.01% in California and New Jersey, and zero tolerance in 11, including Texas. The US adult limit is therefore higher than most of Europe’s, Utah apart, and an American driver in Europe should plan around 0.05% or less almost everywhere. The American 0.08% is grams of alcohol per 100 ml of blood, so it is the same quantity as the 80 mg in England’s law, just written differently.

Two other US rules matter to visiting drivers. Every state has an implied-consent law: by driving there you are treated as having agreed to a breath or blood test, and refusing one carries its own licence penalty. And open-container rules in many states make an opened bottle inside the passenger area an offence on its own, even if the driver has not been drinking. The US road trip rules tool sets the state rules side by side.

BAC laws in Europe’s main driving countries

The table is generated from TyreMap’s country data and converts each limit into the units you will meet on signs, leaflets and police paperwork. The “stricter rule” column shows the lower limits recorded for particular groups of drivers.

For every one of the 194 countries we track, including the zero-tolerance list outside Europe, see alcohol limits by country.

Breath or blood: how the roadside test reads

Police at the roadside almost always test breath, and the law converts. In France, Service-Public sets the standard limit at 0.5 g of alcohol per litre of blood, “equal to” 0.25 mg per litre of exhaled air, and 0.2 g/l (0.10 mg/l of breath) for drivers on a probationary licence, learners in supervised driving and anyone required to use an alcohol interlock. The UK does the same in its own units: the 35-microgram breath limit is the counterpart of 80 mg in blood. So a breath reading of “0.25” in France and “35” in England are not comparable numbers, and neither is the 0.08 on an American citation. The table above puts everything into one scale to make that comparison possible.

Several countries in one day

A route from Munich to Prague, or from Vienna to Budapest, crosses from 0.05% into zero tolerance at a single border post. The safe plan is to drive the whole day to the lowest limit on the route, not to the one where you had lunch. The cross-border checklist shows the limit change at each frontier together with speed limits and required kit, and Austria to Slovakia is a common example of the step down.

New and professional drivers start lower

Several countries hold drivers to a lower limit than the national figure in their first years. Italy has applied zero tolerance since December 2024 to drivers under 21, drivers in their first three years and professional drivers, against 0.05% for everyone else. Denmark introduced 0.02% for the first three years after a car licence in July 2025. In the US, the under-21 limits above work the same way. If your licence is recent, assume the lower figure until you have checked the country page.

What a positive test costs beyond the fine

The fine is rarely the largest cost. Drink-driving is one of the eight offences for which EU states exchange keeper data under Directive (EU) 2015/413, so a case in France or Germany can follow a car registered elsewhere in the EU, and in a hire car the rental company hands over your details under its contract. Penalty scales escalate with the reading: Albania, for example, grades its fines and suspensions by the measured grams per litre and adds a surcharge at night.

Insurance will not soften it. GOV.UK warns that most travel insurance policies exclude events after excessive drinking, and no policy pays a traffic fine; our travel insurance hub explains what each cover leaves out. A speeding case on the same trip is handled differently, as set out in speeding tickets abroad.

An estimate is not a defence

Alcohol is cleared at roughly a fixed rate per hour, so a late night can still show on a breath test the next morning. The BAC calculator uses the Widmark formula to estimate your level and compares it with the limit of the country you choose, but it cannot account for food, medication or individual metabolism. In a zero-tolerance country such as Hungary or Czechia the only safe reading is no drink at all before driving.