Acura 4-Cylinder Engines

Acura’s powertrain strategy has evolved to meet the needs of Indiana drivers. While the brand built its reputation on high-revving naturally aspirated engines, the modern lineup has shifted toward advanced turbocharged 4-cylinders that deliver better torque for merging onto I-465.

Whether you are shopping for a new Integra in Fishers or a Certified Pre-Owned TLX in Noblesville, understanding the specific engine under the hood is key to your decision. At Ed Martin Acura, we service and sell every variation of these powertrains when available.

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1. The 1.5L VTEC® Turbo Family (ADX & Integra)

This is the modern gateway to Acura performance. These engines use a compact displacement and a low-inertia turbocharger to deliver immediate response, replacing the older non-turbo engines with more usable torque for city driving.

The Difference: While they share architecture, the ADX is tuned for smooth low-end SUV utility, while the Integra features a sportier tune with VTEC® on the exhaust valves for high-RPM power.

Feature 1.5L Turbo (ADX) 1.5L VTEC Turbo (Integra)
Vehicles ADX (2025–Present) Integra (2023–Present)
Horsepower 190 hp @ 6,000 rpm 200 hp @ 6,000 rpm
Torque 179 lb-ft @ 1,700 rpm 192 lb-ft @ 1,800 rpm
Induction Mono-Scroll Turbo Mono-Scroll Turbo
Fuel Rec. Premium Unleaded Premium Unleaded

2. The 2.0L VTEC® Turbo Family (RDX, TLX & Type S)

For drivers needing effortless passing power on I-69, the 2.0L series provides V6-level torque with 4-cylinder efficiency.

The Difference: The standard 2.0L found in the RDX and TLX uses a smaller turbo designed for instant pressure and smooth cruising. The Type S variant is a motorsport-derived engine (shared with the Civic Type R) featuring a larger turbo, high-flow exhaust, and heavy-duty cooling for track use.

Feature 2.0L Turbo (Standard) 2.0L Type S Turbo (High Output)
Vehicles RDX (2020–Present)

TLX (2021–Present) 		Integra Type S (2024–Present)
Horsepower 272 hp @ 6,500 rpm 320 hp @ 6,500 rpm
Torque 280 lb-ft @ 1,600 rpm 310 lb-ft @ 2,600 rpm
Valve Train DOHC VTEC® DOHC VTEC® (High Lift)
Redline 6,800 rpm 7,000 rpm

3. Legacy Option: 2.4L Naturally Aspirated (ILX & TLX)

If you are shopping our Certified Pre-Owned inventory, you will see the 2.4L engine. This was the final high-revving non-turbo engine. It pairs with an 8-speed Dual-Clutch Transmission (DCT) for lightning-fast shifts. While it lacks the low-end torque of the new turbos, it is famous for reliability and instant throttle response.

Feature 2.4L (ILX Spec) 2.4L (TLX Spec)
Vehicles ILX (2020–2022) TLX (2020 Only)
Horsepower 201 hp @ 6,800 rpm 206 hp @ 6,800 rpm
Torque 180 lb-ft @ 3,600 rpm 182 lb-ft @ 4,500 rpm
Transmission 8-Speed DCT 8-Speed DCT
Induction Naturally Aspirated Naturally Aspirated

Maintenance Pro-Tips for Acura Owners

Whether you drive a high-revving 2.4L or a torque-heavy 2.0L Turbo, specific care keeps these engines running for 200,000 miles.

Schedule Service Acura Accelerated Service
  • Warm Up in Winter: Turbochargers spin at over 100,000 RPM. On cold Indiana mornings, let the engine idle for a minute before driving hard to ensure oil reaches the turbo bearings.
  • Premium Fuel: Acura engines are calibrated for Premium (91+ Octane). Using lower grade fuel causes the computer to reduce power to protect the engine from knock.
  • Strict Oil Intervals: Turbochargers are cooled by engine oil. Old, dirty oil can "coke" (burn) inside the turbo. Never skip a scheduled oil change.

Experience Acura Performance at Ed Martin Acura

From the efficient ADX to the legendary 2.4L, Acura has a 4-cylinder engine to match your driving style. Visit us in Indianapolis to test drive these powertrains back-to-back and feel the difference.

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