If you want to drive your own car around Africa see also Carnet de Passage
For sightseeing trips, it may be less expensive to hire a taxi than to rent a car, but be sure to negotiate taxi fares beforehand. Travel on rural roads can be slow and difficult in the dry season and disrupted by floods in the rainy season. If you plan on traveling in rural areas of sub-Saharan Africa, avoid the rainy months of May through October above the equator and the rainy months of November through April below the equator. Some roads may be flooded or washed out during these months.
Travel by car outside large towns can be dangerous. Major roads are generally well maintained but there are few divided highways in Africa. In addition, rural auto accidents are fairly common because of high speed limits and the presence of wildlife in these areas. Night driving, especially in rural areas, is not recommended, and visitors are encouraged to hire reputable tour operators for safaris or other game viewing expeditions.