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Under the hood, the first-generation RDX was equipped with a 2.3-liter straight-4 turbocharged gasoline engine generating 240 horsepower and 260 lb-ft of torque, an unusual choice among Honda vehicles at the time. It employed Honda’s variable flow turbocharger to reduce turbo lag, enhancing performance. Fuel efficiency was rated at 19 mpg city and 23 mpg highway. The RDX featured Acura’s Super Handling All-Wheel Drive (SH-AWD) and a five-speed automatic transmission, with paddle shifters available for some models. Inside, the RDX offered leather seating, a moonroof, automatic climate control, and a 7-speaker audio system with XM Satellite Radio. The optional “Technology Package” included Acura’s navigation system, a backup camera, real-time traffic monitoring, Zagat restaurant reviews, and a 10-speaker ELS Surround audio system. Safety features included an Advanced Compatibility Engineering (ACE) body structure, six airbags, active head restraints, pre-tensioners, force limiters, and a 5-star rating in various crash tests by the U.S. National Highway Traffic Safety Administration and a “Good” rating from the Insurance Institute for Highway Safety, with a “Marginal” rating for roof strength.



Look up ACURA RDX specification, engine oil capacity, spark plug gap, safety rating, fuel consumption, transmission, and light bulb sizes.


  • Type: TB

Engine 2.3L 4-Cylinder DOHC

  • Recommended Oil Viscosity: 5W-30
  • Oil certification: API
  • Drain plug torque: 29 ft-lbs
  • Oil capacity: 5.0 quarts

Spark Plug Gap

  • 2.3L 4-Cylinder :0.032”


  • Capacity: 18.0 gal (68 L)


  • Capacity: 5.0 qt (4.7 L) 


  • Capacity: 1.85 gals (7.0 L)

Automatic Transmission Fluid

  • Capacity: 
    • 2WD: 8.8 US qt (8.3 L)
    • SH-AWD 8.2 US qt (7.8 L)

Rear differential fluid (SH-AWD)

  • Capacity: 2.93 US qt (2.77 L)

Transfer assembly fluid (SH-AWD)

  • Capacity: 0.48 US qt (0.45 L)

Washer Fluid

  • Capacity: 2.6 US qt (2.5 L)


  • Type: HFC-134a (R-134a)
  • Capacity: 15.8-17.6 oz (450-500 g)



  • 2.3 L K23A1 Turbo I4


  • 5-speed automatic

Fuel Consumption

ACURA RDX 20072012

Safety Ratings



Front Lights

  • Daytime Running Light Bulb: 9005
  • Front Fog Light Bulb: H11-55W
  • Front Sidemarker Light Bulb: 168
  • Front Turn Signal Light Bulb: 1157NA
  • High Beam Headlight Bulb: 9005
  • Low Beam Headlight Bulb: HID-D2S

Rear Lights

  • Back Up Light Bulb: 7440
  • Brake Light Bulb:
    • 7443-SCK
    • 7443
  • Center High Mount Stop Light Bulb: 921
  • Inner Tail Light Bulb: 168
  • License Plate Light Bulb: 168
  • Outer Tail Light Bulb:
    • 7443-SCK
    • 7443
  • Parking Light Bulb: 1157NA
  • Rear Sidemarker Light Bulb: 168
  • Rear Turn Signal Light Bulb: 7440

Interior Lights

  • Auto Trans Indicator Light Bulb: 74
  • Dome Light Bulb: DE3175
  • Floor Console Compartment Light Bulb: 74
  • Glove Box Light Bulb: 74
  • Interior Door Light Bulb: 194
  • Luggage Compartment Light Bulb: 168
  • Map Light Bulb: 204
  • Vanity Mirror Light Bulb: TS-12V2W