Acura 3.0L & 3.5L SOHC Sport Hybrid V6 Engines

Acura’s Sport Hybrid SH-AWD® system represents a peak era of performance engineering, blending the soul of the NSX supercar with the everyday utility of a luxury SUV or flagship sedan. Unlike traditional hybrids designed solely for fuel economy, these 3-motor systems use electricity to create a "torque vectoring" effect that physically pulls you through corners.

For Indiana drivers navigating slick winter roads in Noblesville or enjoying the winding backroads near Geist Reservoir, the Sport Hybrid system provides a level of grip and immediate acceleration that standard gas engines cannot match. At Ed Martin Acura, we take pride in being local experts on these sophisticated, rare powertrains.

Search Sport Hybrid Inventory Value Your Trade
The 3.0L SOHC Sport Hybrid (MDX)

1. The 3.0L SOHC Sport Hybrid (MDX)

Found exclusively in the third-generation MDX, the 3.0L Sport Hybrid was designed to provide V8-level performance while achieving the best city fuel economy in the model's history. It combines a naturally aspirated 3.0-liter V6 with three electric motors.

  • Found In: Acura MDX Sport Hybrid (2020)
  • The Drive: The instant torque from the rear Twin Motor Unit (TMU) makes this 4,500-lb SUV feel remarkably light on its feet. Because the rear wheels are powered entirely by electricity, the system can send power to the outside wheel while regeneratively braking the inside wheel, helping the MDX rotate into turns with sports-car precision.
  • Specs: 321 hp (Total System) / 289 lb-ft torque (Total System).
  • Transmission: 7-Speed Dual-Clutch Transmission (DCT).
Used Acura MDX Inventory Trade Appraisal Indianapolis, IN

2. The 3.5L SOHC Sport Hybrid (RLX)

The RLX Sport Hybrid was the ultimate expression of the Acura luxury sedan. Utilizing a larger 3.5-liter V6 and a more powerful electric motor integrated into the transmission, it delivered effortless passing power and a library-quiet cabin for long cruises to Carmel.

  • Found In: Acura RLX Sport Hybrid (2020)
  • The Drive: This was the most powerful Acura sedan of its time. The 3.5L engine features Direct Injection and a specialized version of the 7-speed DCT that eliminates the traditional shift-lag. It accelerates with a linear, relentless surge that is both smooth and deeply satisfying.
  • Specs: 377 hp (Total System) / 341 lb-ft torque (Total System).
  • Efficiency: EPA-rated at 28 City / 29 Highway MPG—exceptional for a flagship luxury sedan with nearly 400 horsepower.
Used Acura RLX Inventory Search All Inventory
The 3.5L SOHC Sport Hybrid (RLX)

The 3-Motor Tech: How It Works

The magic of these SOHC (Single Overhead Cam) hybrids lies in the layout of the three electric motors:

  • Direct Drive Motor: This motor is built into the transmission. It helps the gas engine move the front wheels, provides an instant boost of torque upon take-off, and acts as a generator to charge the battery.
  • Twin Motor Unit (TMU): Located on the rear axle, these two independent 36-hp motors power the rear wheels. Because they have no mechanical link to the engine, they can distribute torque instantaneously to either side, providing the "Super Handling" in SH-AWD.

Sport Hybrid vs. Standard V6 Comparison

Feature 3.0L Sport Hybrid (MDX) 3.5L Sport Hybrid (RLX) Standard 3.5L V6 (MDX)
Combined HP 321 hp 377 hp 290 hp
Combined Torque 289 lb-ft 341 lb-ft 267 lb-ft
Transmission 7-Speed DCT 7-Speed DCT 9-Speed Automatic
City MPG 26 MPG 28 MPG 19 MPG
Drive System Electric SH-AWD Electric SH-AWD Mechanical SH-AWD

Maintenance Pro-Tips for Sport Hybrid Owners

The complexity of the 3-motor system requires specialized care to ensure the high-voltage battery and electric motors remain healthy:

  • TMU Fluid Changes: The Twin Motor Unit on the rear axle uses specific fluid that must be changed every 30,000 miles. This fluid is the only thing protecting the high-speed electric motors from heat and friction.
  • DCT Maintenance: The 7-speed Dual-Clutch Transmission is a high-performance unit. Ensure you use only Genuine Acura DCT Fluid to maintain the crisp, seamless shifts the Sport Hybrid is known for.
  • Brake Fluid & Regen: Because these vehicles use regenerative braking to slow down, the physical brake pads often last much longer than on a gas-only car. However, the brake fluid still absorbs moisture and must be replaced every 3 years regardless of mileage.

Experience Electric Torque in Indianapolis

The only way to truly understand the Sport Hybrid difference is to feel the rear motors push you through a corner. Visit Ed Martin Acura in Indianapolis to explore our selection of pre-owned Sport Hybrid models and experience the future of performance today.

Schedule Test Drive