Taxis in Vienna are relatively reasonable. The initial charge is EUR 2.50 for as many as four people daytime, and about 5% more from 11 PM until 6 AM. Radio cabs ordered by phone have an initial charge of EUR 6. They also may charge for each piece of luggage that must go into the trunk, and a charge is added for waiting beyond a reasonable limit. It's customary to round up the fare to cover the tip. You can't flag a cab down in the street in Vienna. Look for a taxi stand. Service is usually prompt, but when you hit rush hour, the weather is bad, or you need to keep to an exact schedule, call ahead and order a taxi for a specific time. If your destination is the airport, ask for a reduced-rate taxi. There are several companies that offer chauffeured limousines, which are listed below.
Taxi drivers may need to know which of the 23 districts you seek, as well as the street address. The district number is coded into the postal code with the second and third digits; thus A-1010 (the "01") is the 1st District, A-1030 is the 3rd, A-1110 is the 11th, and so on. Some sources and maps still give the district numbers, either in Roman or Arabic numerals, as Vienna X or Vienna 10.
Göth (01/713-7196). Mazur (01/604-2530). Peter Urban (01/713-5255).