What motor comes in the TSX?
The TSX uses a 2.4-liter inline-4 engine from Honda's K-series family.
Across its production run, the TSX relied on two main 2.4L i-VTEC engines from the K-series lineup, with a higher-output variant used in the performance-oriented Type-S and a revised version introduced in later years. In North America, base models typically moved from the early K24A2 to the later K24Z1 design as updates rolled out.
First-generation TSX (2004–2008)
Powertrain details for the early TSX center on the 2.4L i-VTEC engine family. The base configuration used the K24A2 variant, delivering around 210 horsepower with torque in the neighborhood of 159–164 lb-ft. Transmission options typically included a 5-speed manual or a 5-speed automatic, depending on trim and market.
Engine code
K24A2
Second-generation TSX (2009–2014)
In the 2009 refresh, North American TSX models moved to a revised 2.4L i-VTEC engine, the K24Z1, which produced about 201 horsepower and roughly 172 lb-ft of torque. Transmission choices included a 5-speed automatic or a manual transmission (often 6-speed) depending on the year and trim.
Engine code
K24Z1
Acura TSX Type-S (2007–2008)
The TSX Type-S offered a higher-output variant of the 2.4L i-VTEC family, tuned for performance improvements over the standard TSX. It was generally paired with a manual transmission and featured calibration changes to maximize power delivery and responsiveness within the same 2.4-liter displacement.
Engine characteristics
Performance-tuned 2.4L i-VTEC variant within the K-series family; specifics varied by market, but all aimed at higher output than the base TSX.
Summary
In brief, the TSX’s motor is a 2.4-liter inline-4 from Honda’s K-series. Early cars used the K24A2, later models adopted the K24Z1, and the performance-focused TSX Type-S used a higher-output variant of the same engine family. This setup defined the TSX’s balance of efficiency and performance across its production years.
