Driving is often the fastest mode of transportation at distances between 10 kilometres (6 mi) and 100 kilometres (60 mi), unless there are traffic jams, or if the roads are in bad condition. In countries with a fast modern high speed rail network, however, driving between big cities is usually slower than using the trains. Within cities urban rail and buses, and cycling often beat cars in terms of speed, due to congestion and problems of finding parking. Over small distances even walking can be faster. In sparsely populated areas public transport may be infrequent or non-existent, and in difficult terrain there may be no railway. You might want to find cheap parking for your car for the time you are in the city, or rent a car only when leaving for the countryside.
Most countries require you to have a valid license before you will be allowed to drive. Although this may or may not actually be enforced in the country you are visiting, you are still strongly advised not to drive without a valid license, as you could be subject to fines and possible imprisonment if caught, and any insurance policies you may have purchased will not cover you in the event of an accident.
Some countries allow foreign licenses, especially from neighboring countries; for example Canada and the USA accept each others' licenses. Many but by no means all other countries will accept an international driving permit (IDP), usually obtained from the automobile association in your home country. If your stay in a country is much longer than a typical tourist's visit, you will often have to get a local license. This may involve simply exchanging your foreign license for a local translation or going through the full courses and testing as a local who has no license would have to.
Check your insurance; not all policies cover international travel and even those that do may not meet the requirements of a destination's regulations. You really do not want to find yourself having to appear in court because of an accident your insurance did not cover, especially when the court may be far from your home or may operate in a foreign language. Nor do you want bills your insurance does not cover, whether auto repair, legal or medical.
Some borders may be no problem to cross with your own car, but many rental contracts forbid driving to certain neighboring countries or even some regions of the same country. You may also need more documentation than at home, e.g. proving ownership. Often you need a sign showing the nationality of your car. At some borders, you need to change the side of the road that you drive on.
Bringing a vehicle into some countries requires a Carnet de Passages; like the IDP this is usually obtained from the automobile association in your home country.
Road conditions and driving habits vary from country to country and between regions. If you will drive in winter or in mountains, check implications of winter driving. If you may be using unpaved roads or roads in bad condition, check what to expect, and also the fine print of your insurance. In sparsely inhabited areas navigating may involve some challenges and breaking down or losing your way is worse than near people. Have and use a map, and get your GPS working.
Fuel prices vary considerably from one country to the next. While fuel is often cheap in oil producing countries this is not so straightforward: Norway is a big oil producer with some of the world's highest prices for petrol, while in USA, which has to import much of its consumption, keeping gas prices down is politically important.
Because of different taxation across borders, filling up before crossing or running the last miles there on the last litres (not a practice to encourage) can save you some money.
When renting a car, you might want to know how thirsty your first choice is. In the USA this is measured as miles per gallon, while in most of Europe the measure is litres per 100 km. In the former case you want a big figure (such as 53), in the latter a small one (such as 4.5). Anglophone countries that aren't the U.S. vary in how they measure fuel efficiency. Typical thirstiness also varies between countries, as does what kind of driving is assumed and the testing procedure itself.
Fuel quality also varies, and what different qualities are called. In some countries you can buy a type that suites your car where it is cheapest, while in others you may want to stick to the most reputable chains.
Diesel is commonly cheaper due to lower taxation in some European countries but it may be rare or unavailable in other countries. Obviously you can't drive a gasoline car with diesel or vice versa.
- Main article: Driving in Morocco
Comparatively easily to get to from Europe, the mountains and deserts can be explored by car.
- Main article: Driving in South Africa
South Africa is quite a large country, and a lot of the attractions are in rural areas. Therefore, public transport isn't good everywhere, and driving is popular.
- Main article: Driving in China
You must have a Chinese license to drive in China. Driving in China is also chaotic, so it is often wise to hire a driver or take taxis to get around. If you do want to drive in China, though, a lot of information about how others drive is very useful. China's major cities generally have good public transportation networks, so you are highly advised to make use of those instead when possible.
- Main article: Driving in Japan
With an efficient and very punctual rail network, driving in Japan is not necessary but doable, especially when going into rural destinations public transport doesn't cover well.
- Main article: Driving in the Philippines
Almost all foreign travellers can drive in the Philippines up to three months, where applying for a Philippine driving license is necessary for long-term stays. While cars are also popular there due to American influence (though only about 5% of Filipinos own cars), driving in the Philippines is also nerve-racking and best avoided unless you have a good reason. Major highways may be up to international standards, but roads can be narrow and congested, and take you to the middle of villages and towns.
- Main article: Driving in Europe
Europe generally has good road networks, although high population density means that there can be a lot of other cars on the road, making driving more difficult. Driving in cities is often problematic and there is good public transportation, so a car is usually needed only for the countryside.
- Driving in Denmark
- Driving in Finland
- Driving in France
- Driving in Germany
- Driving in Iceland
- Driving in Italy
- Driving in Norway
- Driving in Poland
- Driving in Russia
- Driving in Spain
- Driving in Sweden
- Driving in Switzerland
- Driving in the United Kingdom
- Main article: Driving in Australia
Australia has a strong consumer car culture, and most adult Australians drive to get around their respective cities. While public transportation is available in the larger cities, a car is essential to get around in smaller cities and the countryside.
Much of Australia's population lives a relatively small area on the southeast coast, and travel between the southeastern coastal cities of Brisbane, Sydney and Melbourne is possible if you have a lot of time. However, to get to Perth, you have to travel great distances across Australia's desert country.
- Main article: Driving in New Zealand
Cars are very popular in New Zealand, and a car is necessary if you want to see New Zealand's beautiful countryside.
- Main article: Driving in Canada
Most of Canada's roads are in the south, due to the low population density and extremely cold weather in the north. As Canada is rather sparsely populated, cars are necessary to get around the countryside and small to medium-sized cities.
- Main article: Driving in Mexico
- Main article: Driving in the United States
The United States is the country where cars dominate the most, and must be used if you want to get the best idea of the American countryside, its history, and important destinations throughout. Since the United States is large, especially when compared to its population, there are opportunities to "hit the road" and be far from busy highways, or opportunities to get off the road altogether. With very few exceptions, even major cities like Los Angeles, Detroit, Miami and Houston tend to be poorly served by public transport, and having a car is generally the best way to get around. The contiguous United States has good and well-maintained network of Interstate Highways, making it a breeze to drive between nearby major cities.
- Main article: Driving in Brazil
Road safety differs much between countries. In some, roads may be of very bad quality, with potholes or damaged sections with no warnings, in some the climate poses a challenge, in some reckless driving is common. Some of the dangers can be mitigated or minimized with proper preparations, in some countries you should consider leaving the driving to locals. It's best to avoid unpaved roads if possible.
In some areas, automotive vandalism or theft can be quite common. To mitigate some risk, keep your doors locked when you are away from the car or when the car is in motion, and the windows up when possible. Keep valuables on your person, or out of view in the trunk or glovebox if that is not practical. In some areas, criminals may try to siphon off gas from your car, install credit card skimmers at gas station pumps, or offer to "protect" your parked car for a fee (Vandalizing it if you don't pay and leave it parked there anyway). Some cars are equipped with anti theft systems that can send an alert to your phone if it detects unusual activity.
If you are going to drive in the Arctic, in winter in temperate climats or in mountains (including mountain passes), you should acquaint yourself with advice for winter driving. The roads will be slippery, sight may be reduced (snow can cause "whiteouts" where you hardly see ten metres) and getting stuck will make you have to cope with cold weather.
Dense fog may actually be the deadliest weather phenomenon you encounter, as it drastically reduces visibility and thus causes traffic accidents. Sometimes there is fog only in valleys or by bodies of water; when driving downhill visibility can be abruptly reduced unless you are alert.
Flooding can trap you. Driving on a road covered with water is dangerous as judging the depth and the condition of the road (which may have been damaged) is difficult. Water can destroy the engine by abruptly cooling parts of it, and if deep enough even sweep away the car.