Here are some safety tips when travelling abroad with a rental car:
Review maps and other visitor information before leaving the rental car area or other location. Reading a map while driving is dangerous and can indicate you are unfamiliar with the area.
Familiarize yourself with the vehicle's safety equipment, including hazard lights, windshield wipers, the spare tire, seat belts and door locks.
Always be wary of pulling over, especially if it is dark or if you are unfamiliar with the territory. Do not stop if a passing motorist tells you that something is wrong with your vehicle or if someone bumps you from behind. Pull into the nearest service station or well lit public area.
Never exit your cheap rental car until you are sure that the situation is safe.
Keep all your luggage locked in the trunk.
Always use seat belts. It is the law and may save your life in the event of an accident.
Do not draw attention to the fact that you are a visitor.
Stay on the main roads and stick to your planned route.
If your car malfunctions on a major thoroughfare, lock the doors, turn on the hazard lights and wait for the police to arrive.