You can drive in the UK on a valid US license, but you need an International Driving Permit, specific car insurance, and you must follow UK road rules that differ from American ones

An American driver's license alone is not enough. The UK will accept your US license as a secondary document, but you must carry an International Driving Permit (IDP) as your primary proof of driving authority. You get an IDP from your state's DMV before you leave — it costs between $15 and $30 and takes one to two weeks by mail, or you can get it same-day in person at most DMV offices. Without it, you risk being stopped by police and unable to prove you are legally permitted to drive.

Rental companies will ask for both your US license and your IDP at the counter. They will also require a credit card in your name and will charge you extra for their own insurance unless you bring proof of coverage from home. UK roads are narrower than American highways, you drive on the left side, and the speed limits are in miles per hour but the distances between towns are shorter than you may expect. Petrol (gasoline) costs roughly double what you pay at home, and most rental cars are manual transmission unless you pay extra for automatic.

Key Takeaways

  • You must obtain an International Driving Permit from your US state DMV before traveling; your American license alone is not sufficient.
  • Rental car companies require both your US license and IDP, plus a credit card and proof of insurance coverage.
  • UK driving requires adjustment to left-side driving, narrower roads, different speed limits, and manual transmission vehicles unless you pay a premium for automatic.
  • Your US auto insurance may not cover you abroad; contact your insurer before departure to confirm coverage or purchase a rental car policy.

Getting an International Driving Permit from your state DMV

The IDP is a translation of your US license into multiple languages and is recognized by the UK, EU, and most other countries. You cannot order it online or through a third-party service — you must get it directly from your state's DMV office. Bring your valid US driver's license, a completed process form (usually form DL 43 or similar, depending on your state), a passport-sized photo, and the fee. Most states charge $15 to $30.

If you go in person, you can walk out with it the same day. If you mail your process, allow two to three weeks. The IDP is valid for three years from the date of issue. You do not need a separate IDP for each country you visit — one IDP covers all your international driving. Keep it with your passport and US license at all times while driving in the UK.

What your US auto insurance covers (and what it does not)

Most US auto insurance policies do not automatically extend to rental cars in the UK. Call your insurance company at least two weeks before your trip and ask whether your policy covers rental vehicles abroad. Some policies do; many do not. If yours does not, you have two options: purchase a rental car insurance policy from your US insurer before you leave, or buy coverage from the rental company in the UK.

Rental company insurance in the UK is expensive — typically £15 to £25 per day (roughly $19 to $32 USD). If you buy coverage from your US insurer before departure, it usually costs less and gives you the same protection. Either way, you must have proof of coverage before you pick up the car. The rental company will not let you drive off the lot without it. Do not assume your credit card covers rental car damage — most credit card protections exclude rentals outside North America.

Renting a car and choosing manual versus automatic transmission

Most rental cars in the UK are manual transmission because petrol is expensive and manual cars are more fuel-efficient. Automatic rentals exist but cost 30 to 50 percent more per day. If you do not drive manual, book an automatic in advance and expect to pay extra. At the rental counter, you will need your US license, IDP, a credit card in your name, and proof of insurance. The rental company will take an imprint of your credit card as a deposit, usually £500 to £1,500 (roughly $630 to $1,900 USD), which they return when you bring the car back undamaged.

Petrol costs roughly £1.40 to £1.60 per litre (about $6.50 to $7.40 per US gallon as of 2024, though prices fluctuate). Rental cars in the UK are smaller and more efficient than typical American vehicles, so a week's driving may cost £40 to £80 in fuel depending on distance. Most rental companies offer fuel packages where you prepay for a full tank at a fixed rate — compare this against the pump price before you decide.

UK road rules that differ from American driving

You drive on the left side of the road in the UK, which means the steering wheel is on the right side of the car. This takes adjustment even for experienced drivers. Roundabouts (traffic circles) are common and you enter them by turning right and moving counterclockwise — the opposite of American traffic circles. Yield to traffic already in the roundabout; do not enter until there is a clear gap.

Speed limits are posted in miles per hour, the same unit as the US, but the limits are lower: 30 mph in towns, 60 mph on single-lane roads, and 70 mph on motorways (highways). Speeding fines are automatic and enforced by cameras; you cannot negotiate with a police officer. Seatbelts are mandatory for all passengers. Drink-driving limits are lower than in most US states — the legal limit is 35 micrograms of alcohol per 100 millilitres of breath, compared to 80 micrograms in the US. Parking in city centres is expensive and often restricted; use a car park (parking garage) or street parking with a permit, which you buy from a machine or an app.

What to do if you are stopped by police or have an accident

If a police officer stops you, they will ask for your driving license, IDP, proof of insurance, and vehicle registration. Provide all four documents. You are not required to sign anything or admit fault. If you are in an accident, call 999 (the UK emergency number) if anyone is injured. If there is no injury, call the non-emergency police line (101) to report it. Exchange contact and insurance details with the other driver, take photos of the damage, and get the names and contact information of any witnesses.

Report the accident to your rental company and your insurance company as soon as possible. Do not leave the scene or admit fault to the other driver. The police will issue you an incident report number, which you will need for your insurance claim. If you damage the rental car, the rental company will charge you for repairs up to the amount of your deposit, unless you have insurance coverage that pays for it.

Toll roads, congestion charges, and other fees

Most UK roads are free, but some motorways and bridges charge tolls. The M6 Toll near Birmingham, the Severn Bridge between England and Wales, and the Dartford Crossing near London all charge fees. You can pay at a booth or online after your trip — rental companies sometimes charge you automatically if you do not pay in advance. London has a congestion charge: if you drive in central London between 7 a.m. and 6 p.m. on a weekday, you must pay £15 (roughly $19 USD) per day or face a fine. You can pay online before or after your trip.

Some city centres also have low-emission zones that charge vehicles that do not meet emissions standards. Most modern rental cars meet these standards, but check with the rental company before you book. Parking meters in towns and cities require payment during business hours, usually £1 to £3 per hour. Use a parking app or buy a ticket from a machine and display it on your dashboard.

Frequently Asked Questions

Do I need an International Driving Permit if I am only visiting for a few days?

Yes. The UK requires an IDP regardless of how long you stay. Your US license alone is not sufficient proof of driving authority. Get your IDP from your state DMV before you leave the US — it takes one to two weeks by mail or one day in person.

Can I use my US auto insurance to rent a car in the UK?

Maybe. Call your insurance company before your trip and ask whether your policy covers rental vehicles abroad. If it does not, buy a rental car policy from your insurer or the rental company. Do not assume your credit card covers rental damage — most do not cover rentals outside North America.

What happens if I get a speeding ticket in the UK?

UK speeding fines are automatic and enforced by cameras. You cannot negotiate with a police officer. The rental company may receive the fine and charge your credit card, or the fine may be mailed to your US address. Pay it promptly — ignoring a UK fine can result in a larger penalty and may affect your ability to rent a car on future trips.

Is it hard to drive on the left side of the road?

It takes adjustment for the first hour or two, but most American drivers adapt quickly. Start with quieter roads and avoid driving in London or other major cities on your first day. Roundabouts are the trickiest part — remember to yield to traffic already in the circle and move counterclockwise.

What if I damage the rental car?

The rental company will charge you for repairs up to the amount of your deposit (usually £500 to £1,500). If you have insurance coverage, your insurer will pay instead. Report the damage to the rental company when ready and get a written damage report. Take photos of the damage before you leave the lot.