The 2004 Acura TSX represents a pivotal moment in the brand's history, introducing the luxury division's first dedicated sedan to the North American market. Built on a refined version of the Honda Civic platform, the TSX combined engaging driving dynamics with a premium interior, quickly establishing itself as a compelling choice for buyers seeking a practical yet sophisticated vehicle. Its available 2.4-liter K24A4 inline-four engine delivered a balance of efficiency and pep that resonated with enthusiasts and daily drivers alike.
2004 TSX Engine Specifications and Performance
Under the hood, the base 2004 TSX was powered by the K24A2, a 2.4-liter four-cylinder engine producing 160 horsepower and 161 lb-ft of torque. This setup provided adequate power for highway merging and city cruising, achieving an EPA-estimated 24 mpg city and 32 mpg highway. For those seeking more vigor, the optional K24A4 engine became available later in the model year, boosting output to 190 horsepower and 180 lb-ft of torque. This performance-oriented variant was often paired with the available six-speed manual transmission, transforming the TSX into a genuinely fun-to-drive sports sedan.
K24 Engine Lineup Details
K24A2: Standard on the LX, producing 160 hp with a focus on reliability and fuel efficiency.
K24A4: Optional on the EX and standard on the Type-S, delivering 190 hp with a higher redline for spirited driving.
Transmission: Five-speed automatic standard, six-speed manual available with the K24A4 engine.
The Appeal of the TSX Powertrain
One of the primary reasons the 2004 TSX remains popular today is the durability and tuning potential of its K24 engine. Derived from Honda's proven technology, these motors are known for longevity when properly maintained. The K24 series is a favorite among tuners, capable of handling significant modifications through aftermarket parts. This has led to a robust aftermarket support network, allowing owners to easily find performance parts ranging from simple cold air intakes to turbocharger kits.
Interior Comfort and Technology Inside, the 2004 TSX offered a cabin that felt upscale compared to its Honda Civic sibling. The use of soft-touch plastics and higher-grade materials created an atmosphere of quiet competence. Bucket seats with leather accents on the Type-S model provided lateral support during aggressive cornering, while the standard rear seat offered decent room for passengers. Infotainment was handled by a premium Bose audio system on higher trims, ensuring that the engine noise was complemented by clear, high-fidelity sound. Handling and Driving Dynamics
Inside, the 2004 TSX offered a cabin that felt upscale compared to its Honda Civic sibling. The use of soft-touch plastics and higher-grade materials created an atmosphere of quiet competence. Bucket seats with leather accents on the Type-S model provided lateral support during aggressive cornering, while the standard rear seat offered decent room for passengers. Infotainment was handled by a premium Bose audio system on higher trims, ensuring that the engine noise was complemented by clear, high-fidelity sound.
Acura's tuning philosophy for the TSX prioritized driver engagement over numb comfort. The suspension was firm yet compliant, absorbing road imperfections without washing out the steering. This direct feedback made the TSX feel planted and stable at high speeds, setting it apart from many competitors that leaned too heavily toward softness. Whether navigating winding backroads or merging onto the freeway, the TSX inspired confidence with its precise steering and balanced weight distribution.
Reliability and Maintenance Considerations
Owning a 2004 TSX generally means inheriting a well-engineered machine with a solid reputation for reliability. The K24 engines are not without their quirks, however; owners should be aware of potential issues such as timing belt wear and water pump failure, which are common on vehicles of this age. Staying current with factory-scheduled maintenance, including coolant flushes and transmission service, is the best way to ensure the vehicle provides years of dependable service. Regular oil changes using the correct viscosity are especially important for maintaining the health of the internals.
