The 2009 Acura TSX is powered by a 2.4-liter inline-four i-VTEC engine. It delivers roughly 200 horsepower and is available with either a 6-speed manual or a 5-speed automatic transmission.
Engine design and performance
To help readers understand what drives the 2009 TSX, here are the core technical characteristics of its engine.
- Displacement: 2.4 L (approximately 2,357–2,368 cc depending on measurement)
- Configuration: Inline-4
- Valvetrain: DOHC with i-VTEC (intelligent Variable Valve Timing and Lift Electronic Control)
- Fuel delivery: Sequential multi-point fuel injection
- Power and torque: roughly 200–210 hp and about 170–172 lb-ft of torque, depending on transmission and market
- Induction: Naturally aspirated
In summary, the 2.4-liter i-VTEC inline-four is designed to balance performance with efficiency, using Honda/Acura’s VTEC technology to optimize valve timing across RPM ranges.
Transmission options and efficiency
The engine is paired with two transmission choices, which can affect performance figures and fuel economy. The following list outlines the available configurations.
- Six-speed manual transmission
- Five-speed automatic transmission
- Estimated fuel economy varies by drivetrain: typical figures are in the low 20s mpg in city and low 30s mpg on the highway
Choosing between the manual and automatic can influence throttle response and shifting feel, but both configurations rely on the same 2.4-liter i-VTEC engine architecture.
Notes for prospective buyers
For buyers researching a 2009 TSX, it’s useful to know how the engine packaging translates to real-world use. The 2.4-liter i-VTEC engine emphasizes a broad powerband suitable for everyday driving, with the manual transmission offering a more engaged experience for enthusiasts.
Key takeaways
The 2009 TSX’s engine is a reliable, compliant 2.4-liter inline-4 with i-VTEC, paired with either a 6-speed manual or 5-speed automatic, and a power output around 200–210 hp depending on specification.
Summary
The 2009 Acura TSX is powered by a 2.4-liter inline-four i-VTEC engine that provides solid performance and flexible transmission options. With its DOHC design and sequential multi-point fuel injection, the engine aims to balance everyday usability with spirited driving. Whether you prefer the responsiveness of the six-speed manual or the convenience of the five-speed automatic, the core engine architecture remains the same, delivering a reliable and familiar Acura driving experience.