The TÜVASAŞ 2000, more commonly known as TVS2000, is a series of intercity railcars built by TÜVASAŞ for the Turkish State Railways between 1993 and 2005. They were built in order to revive TCDD's failing image in the early 1990s, for use on the Capital Express. Today they are the most common railcars in Turkey.

The Capital Express was one of the six daily intercity trains operating between Istanbul and Ankara on the Istanbul-Ankara railway before the Yüksek Hızlı Tren high-speed train service replaced all intercity trains on the line. The Capital Express was the fastest of the six trains, making limited stops only in large cities. The train would complete its journey in just over four hours and in the Eskişehir Province, trains would reach conventional speeds of 150 km/h (93 mph), which still hold the record for fastest conventional train service in Turkey. When the high-speed rail service was opened between Ankara and Eskişehir on 13 March 2009, the Capital Express, along with the other five intercity trains, were cut back between Istanbul and Eskişehir. During this period two more daily intercity trains were added, the Sakarya Express and Eskişehir Express, increasing daily intercity service to eight trains.