Acura 2.4L i-VTEC® I4 Engines

For many Acura enthusiasts, the 2.4L i-VTEC® represents the perfect balance of old-school high-revving spirit and modern luxury reliability. While newer models have transitioned to turbocharging, this naturally aspirated engine remains a favorite for its instant throttle response and its unique partnership with the world's first torque-converter-equipped Dual-Clutch Transmission.

Whether you are looking for a nimble commuter for the daily drive to Indianapolis or a high-value Certified Pre-Owned sedan in Fishers, the 2.4L engine is a legendary workhorse. At Ed Martin Acura, we specialize in maintaining these high-revving powerplants to ensure they perform for hundreds of thousands of miles.

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The ILX Performance Tune (2020–2022)

1. The ILX Performance Tune (2020–2022)

In the Acura ILX, the 2.4L engine (K24W7) serves as the heart of a compact athlete. Because the ILX is a lightweight platform, this engine provides a "point-and-shoot" driving experience that makes navigating traffic on I-465 feel effortless.

  • Found In: Acura ILX (2020, 2021, 2022)
  • The Drive: This version of the 2.4L loves to be revved. It features a DOHC (Double Overhead Cam) design with i-VTEC® that changes the valve timing as you climb the RPM needle, providing a surge of power as you merge or pass.
  • Specs: 201 hp @ 6,800 rpm / 180 lb-ft torque @ 3,600 rpm.
  • Transmission: 8-Speed Dual-Clutch Transmission (DCT) with Torque Converter.
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2. The TLX Precision Tune (2020 Only)

For the final year of the first-generation TLX, the 2.4L engine was tuned for a slightly higher output to match the sedan's larger footprint. This model is highly sought after because it combines the efficiency of a 4-cylinder with Precision All-Wheel Steer™ (P-AWS®).

  • Found In: Acura TLX 2.4L (2020)
  • The Drive: In the TLX, the 2.4L feels more refined and composed. It uses direct injection to maximize fuel atomization, resulting in a cleaner, more efficient burn. When paired with the P-AWS® system, it allows the rear wheels to toe-in slightly during braking or turn opposite the front wheels for tighter U-turns in downtown Carmel.
  • Specs: 206 hp @ 6,800 rpm / 182 lb-ft torque @ 4,500 rpm.
  • Transmission: 8-Speed Dual-Clutch Transmission (DCT) with Torque Converter.
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The TLX Precision Tune (2020 Only)

Engineering Highlight: The 8-Speed DCT

The most significant partner to the 2.4L engine is the 8-speed Dual-Clutch Transmission. Acura was the first to add a torque converter to a DCT.

Why it matters: Most dual-clutch gearboxes can feel "jerky" at low speeds (like stop-and-go traffic in Noblesville). Acura’s torque converter smooths out the take-off while the dual clutches handle lightning-fast gear changes once you’re moving. It is widely considered one of the best-shifting transmissions in the brand's history.

2.4L i-VTEC Comparison Specs

Feature ILX (2020-2022) TLX 2.4L (2020)
Horsepower 201 hp 206 hp
Torque 180 lb-ft 182 lb-ft
Induction Naturally Aspirated Naturally Aspirated
Fuel Delivery Direct Injection Direct Injection
MPG (Combined) 28 MPG 27 MPG
Handling Tech Amplitude Reactive Dampers Precision All-Wheel Steer (P-AWS)

Maintenance Pro-Tips for 2.4L Owners

The 2.4L i-VTEC is known as one of the most reliable engines Acura has ever built, but it requires specific attention to remain in peak form:

  • Direct Injection Cleaning: Because this engine uses Direct Injection, fuel does not wash over the intake valves. Over time, carbon can build up. We recommend an intake system cleaning every 30,000 to 45,000 miles to maintain throttle response.
  • The DCT Fluid Interval: The 8-speed transmission is a high-performance unit. To keep those shifts crisp, ensure you follow the Maintenance Minder for transmission fluid changes—typically every 30,000 miles if you do a lot of city driving.
  • Spark Plug Precision: This engine is sensitive to spark plug gap. Always use factory-spec Iridium plugs to ensure the high-compression (11.6:1) combustion remains stable.

Experience the High-Revving Legend

If you prefer the mechanical purity of a naturally aspirated engine over a turbocharger, the 2.4L i-VTEC is the engine for you. Visit Ed Martin Acura in Indianapolis to explore our CPO and pre-owned inventory of ILX and TLX models today.

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