What car is the Acura TSX based on?
The Acura TSX is based on the Honda Accord.
Across its two generations (2004–2008 and 2009–2014), the TSX adopted the Accord's platform as its foundation, essentially offering premium styling and features on the familiar Honda midsize sedan chassis. The first generation aligned with the seventh-generation Accord, while the second generation adopted the eighth-generation Accord underpinnings.
Platform sharing by generation
To understand how the TSX maps to Honda's lineup, note the direct platform relationships for each generation:
- 2004–2008 Acura TSX — based on the seventh-generation Honda Accord platform.
- 2009–2014 Acura TSX — based on the eighth-generation Honda Accord platform.
In both cases, the TSX carried Honda-sourced engines and many mechanical components, but wore Acura branding and styling with premium features and a sportier setup.
Engines and drivetrains shared
The TSX relied on Honda's 2.4-liter four-cylinder K-series engine across its production. Transmission choices included a five-speed manual and a five-speed automatic in the first generation, with the later model offering updated gearing and, in some trims, a six-speed manual.
Summary
Conclusion: The Acura TSX is built on the Honda Accord platform, using Accord-based chassis and powertrains across two generations, but marketed as a distinct Acura sedan with sport-luxury characteristics.
