The Acura TSX is a medium-sized entry-level luxury car that was manufactured by Acura. Introduced in April 2003 as a 2004 model, it was sold only in the United States and Canada, but since the 2009 model year it has also been available in Mexico. It is also sold in Guam and Puerto Rico. It is sold in North America under the Acura luxury marque, where it filled the gap as Acura's 4-door, entry-level sedan when the Integra sedan was discontinued in 2001 (1996 in Canada since the EL was the Integra sedan's replacement there). The TSX would also eventually replace the Acura RSX in the US (which in turn succeeded the Acura Integra coupe). From 2008 until 2013, the TSX was the smallest vehicle in the Acura model line, other than the Civic-based CSX (and the preceding 1.6/1.7EL) sold only in Canada. In 2013, the smaller ILX was introduced in both the United States and Canada, based upon the Civic platform (replacing the CSX in Canada). All TSXs were built in Sayama, Saitama, Japan.
The TSX is badge engineered from the CL-series Accord (also known as the Euro R Accord or JDM Accord R) sold in Europe, Japan, South Africa, Australia and New Zealand. The TSX initially had a restyled interior and different suspension tuning than the European Accord when it was introduced. However, since 2008, the interior is now standardized for all three markets. In Australia & New Zealand, the CL-series is sold as the Accord Euro R in the smaller mid-size bracket, where the American-market Accord is sold in the large car category. In North America, the TSX is sold alongside the mid-size luxury Acura TL, which is based on the American-market Accord. The Accord Euro was launched in China at the end of 2009, where it is built by Dongfeng Honda, and is called the Honda Spirior.
Honda announced plans to discontinue the TSX and the larger TL during 2014 with the introduction of the TLX, which replaces both vehicles.