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What engine does the Acura TSX 2006 have?

The 2006 Acura TSX uses a 2.4-liter inline-4 engine with i-VTEC, commonly known as the K24A2. It is rated at about 205 horsepower and 164 lb-ft of torque.


Engine type and lineage


For the 2006 model year, Acura relied on Honda's K-series family, pairing the TSX with the 2.4-liter K24A2 four-cylinder. This setup is known for a smooth power band, refined acceleration, and the reliability that helped position the TSX as a practical yet engaging compact sedan in Acura’s lineup.


About the K24A2


The K24A2 is a 2.4-liter inline-four that uses double overhead camshafts (DOHC) and i-VTEC on the intake valves to optimize performance across the rev range. It balances strong peak output with a broad, usable midrange for everyday driving.


Core specs


Before this list, here is a quick snapshot of the key technical points:



  • Engine code: K24A2

  • Displacement: 2.4 L (approximately 2,354 cc)

  • Configuration: Inline-4, DOHC

  • Valvetrain: i-VTEC (intake cam)

  • Output: about 205 horsepower and 164 lb-ft of torque (SAE net, U.S. market)


These specifications underscore a powertrain designed for lively response and quiet cruising alike, fitting the TSX’s balance of sportiness and everyday practicality.


Performance and driving characteristics


The 2.4-liter i-VTEC engine is noted for a rev-happy character that delivers strong power through the upper midrange and into the high end. When paired with either the six-speed manual or the available automatic, it provides a refined, predictable power delivery suitable for daily commutes and highway overtaking alike.


Technology and reliability


As part of Honda’s K-series family, the K24A2 benefits from proven engineering, durable construction, and reliable performance with regular maintenance. The engine’s variable valve timing helps optimize both efficiency and responsiveness, contributing to the TSX’s reputation as a durable, well-rounded sedan.


Summary


In summary, the 2006 Acura TSX is powered by a 2.4-liter inline-four i-VTEC engine (K24A2) that delivers roughly 205 horsepower and 164 lb-ft of torque. The setup emphasizes smooth, high-revving performance and practical everyday usability, aligning with the TSX’s overall blend of sportiness and refinement.

Is the Acura 2.4 engine reliable?


Both the 2.4 and 3.5 are exceptionally good engines.



How long will a 2006 Acura TSX engine last?


On average, you can expect the Acura TSX to last anywhere between 250,000 to 300,000 miles, with some owners claiming their car is still going strong even after 350,000 miles.



Which Acura TSX has the K24 engine?


This engine was available in the 2004-2008 Acura TSX in the U.S., the 2002-08 JDM Honda Odyssey Absolute, and the 2002-08 JDM Accord Type-S. With a sky-high redline of 7,200 rpm and a solid reputation for strength and durability, the K24A2 delivers both power and fuel efficiency.



Does the 2006 Acura TSX have a K24?


Another feature of the i-VTEC system on the TSX and RSX-s was that, unlike other Honda K-series motors, variable timing was used on both the intake and exhaust cams in its three rocker design. In 2005, for the 2006 model year, the K24A2 was updated to produce 205 hp (153 kW).


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.