An auto rickshaw is generally characterized by a sheet-metal body or open frame resting on three wheels, a canvas roof with drop-down sides, a small cabin in the front of the vehicle for the driver (sometimes called an auto-wallah), and seating space for up to three passengers in the rear. They are generally fitted with an air-cooled scooter version of a two-stroke engine, with handlebar controls instead of a steering wheel. Many auto rickshaws follow the original design of the Piaggio Ape C, from 1956, which was originally based on the Vespa. Auto rickshaws are considered light duty vehicles.[citation needed]

In certain parts of Egypt such as the further reaches of Alexandria auto-rickshaws are used to access long streets where use of a taxi would be uneconomical, not necessarily in poorer areas.

In certain parts of Egypt such as the further reaches of Alexandria auto-rickshaws are used to access long streets where use of a taxi would be uneconomical, not necessarily in poorer areas.

Tuk-tuks are also to be found on the streets of Banjul, The Gambia but are not as common as conventional four-wheel vehicles.

There are tuk-tuks in several Kenyan towns. Using them is somewhat cheaper than ordinary taxis. However, tuk-tuks cannot operate in mountainous towns, which are common in Kenya. Fierce competition with Boda-bodas (bicycle taxis) and Matatus (minibuses) hinders popularity of Tuk-tuks, especially within the interior of Kenya. While they may not be widely found in Kenya, they are numerous in the coastal regions, which are less mountainous. For example, in the town of Malindi they offer an economical and convenient mode of transportation.

Tuk-tuks are also common in Ethiopia, and are becoming common in Tanzania, particularly in the outer areas of Dar es Salaam. Since 2009, tuk-tuks have become common in Maputo, Mozambique. In Tanzania and Ethiopia, they are known as "Bajaj" or "Bajajis", after the Bajaj Auto company which manufactures many of them.

Auto rickshaws (locally called "baby taxis" and more recently "CNGs" due to their fuel source) are one of the most popular modes of transport in Bangladesh mainly due to their size and speed. They are best suited to narrow, crowded streets, and are thus the principal means of covering longer distances within urban areas.

Earlier, auto rickshaws were colored black with a yellow canvas topping and ran on gasoline without any meter system. However, due to the vast supplies of natural gas in Bangladesh, the government has since encouraged the development of four-stroke compressed natural gas (CNG)-powered engines rather than the older two stroke engine petrol-running models. Two-stroke engines had been identified as one of the leading sources of air pollution in Dhaka. Thus, since January 2003, traditional auto rickshaws were banned from the capital; only the new CNG-powered models were permitted to operate within the city limits. The newly manufactured CNG auto rickshaws are more fuel-efficient and have a lower center of gravity, making them safer than older models. All CNGs are painted green to signify that the vehicles are eco-friendly and that each one has a meter built in as standard.

Another version of the auto rickshaw can be seen in rural areas of Bangladesh, where they are called "helicopters". "Helicopters" are auto rickshaws modified to have a large body with which it can carry more than six or seven passengers.

At end of 1980s, a local company Atlas designed and built a new version of the auto rickshaw, called mishuk, a name derived from a children's mascot of a local deer. Unlike baby taxis, mishuks have spoke wheels and a green body, and have no meter system. Mishuks have more space than baby taxis or CNGs, which makes it more popular with women. They are commonly found in Dhaka and elsewhere in the country due to its four-stroke engine, which is not listed as a significant source of air pollution.

In Cambodia, the term tuk-tuk is used to refer to a motorcycle with a cabin attached to the rear. Cambodian cities have a much lower volume of automobile traffic than Thai cities, and tuk-tuks are still the most common form of urban transport. At the temple complex of Angkor, for example, tuk-tuks provide a convenient form of transport around the complex for tourists. One can hire a tuk-tuk and driver by the day.

Siem Reap tuk-tuks are generally of the style of motorcycle and trailer. Phnom Penh tuk-tuks are by contrast one piece. They are the front end of a motorcycle comprising of steering, tank and engine/gearbox with a covered tray mounted at the back. The power is transferred by chain to an axle mounted to the modified rear fork which drives the two rear wheels. Suspended upon the rear fork is an open cabin with an in-line seat on each side. This arrangement can carry 6 people at ease, with their luggage in the leg space. It is not unusual to see these vehicles greatly overloaded, especially in outer suburbs and around markets.