2007 Acura RDX 2.3 Turbo Engine

Of course, this is the engine we'd all like to see a variation of in a future S2000. Sadly, nothing is announced. Give Honda some time, however, as this is the first North American Turbo engine Honda/Acura has offered... and Hondas experience with Turbo engines is very limited. This new engine has all the important parts (except Direct Injection), and no doubt it's development cost will be spread around further.

This page has the 2007 RDX Press Release, Specifications, and high-res images.

Engine & Driveline High-Res Images

(click on the thumbnail for a high-res image)

Cover over intake manifold.
Complete engineDetail: cam sprockets and intercoolerDetail: cam sprockets
Close-coupled catalyst (a major restriction point)SH-AWD detail 
Exhaust manifold detailMass-air meter, incorporated into airboxThrottle body on intake tract, placed post-intercooler for better responsiveness.

Press Release

Turbocharged Acura RDX Debuts At 2006 New York Auto Show
All-New Entry Premium SUV features Super Handling All-Wheel Drive

New York 04/12/2006 --

The all-new 2007 Acura RDX Entry Premium SUV, made its production debut at the New York Auto Show today. RDX combines Acura's first-ever turbocharged engine with the breakthrough Super Handling All-Wheel Drive(TM) (SH-AWD(TM)), for sports sedan-like handling in a SUV package.

"The all-new RDX is an exciting entry to the Acura light truck lineup for 2007," said John Mendel, senior vice president, auto operations, "The RDX's innovative powertrain coupled with SH-AWD provides this SUV with excellent fuel economy and outstanding performance."

The RDX is aimed at high-energy urbanites that spend the work week in the confines of the city, and then decompress on the weekends by getting away from it all. Regardless of where they go, these drivers expect the ultimate in responsiveness, control and adaptability.

Built on a new global light truck platform, the RDX concept was first designed in California and then developed in Japan. Besides featuring precedent-setting engineering features including Acura's first turbocharged and intercooled engine and the first adaptation of a SH-AWD(TM) system to an SUV, the RDX also offers Acura's first standard 18-inch wheels and tires.

True to form for Acura, the RDX incorporates a class-leading array of sophisticated electronic technologies that are seamlessly integrated to keep its passengers informed, entertained and in touch. The RDX also introduces new safety technologies based on the fundamentals of Acura's "Safety Through Innovation" initiative.

As Acura's first Entry Premium SUV, the RDX was the focal point of the development of a special powertrain that would blend 4-cylinder efficiency and 6-cylinder power. The ideal solution came in the form of an innovative new variable flow turbo (VFT) that delivers an unusually broad powerband with little or no lag in throttle response. The RDX is equipped with an all-new 2.3-liter DOHC 16-valve in-line four-cylinder engine with i-VTEC valve control that combines Variable Valve Timing and Lift Electronic Control (VTEC) with Variable Timing Control (VTC). With the variable flow turbo working in concert with i-VTEC, the RDX delivers strong power and torque, excellent fuel economy and very low emissions.

Rated output for the RDX engine is 240 horsepower SAE net* at 6000 rpm. In terms of torque, the RDX has the highest output of any engine in the Acura lineup, with 260 lbs.-ft. of torque SAE net* at 4500 rpm. The RDX is expected to return an EPA-estimated 19/24** City/Highway mileage, while meeting strict CARB LEV-2 ULEV and EPA Tier-2 Bin-5 emissions standards.

A 5-speed automatic transmission with Sequential SportShift is standard. The electronically controlled drive-by-wire throttle and transmission work together to execute shifts, resulting in exceptionally quick and smooth gear changes. The transmission can function as a conventional automatic transmission or, at the driver's option, can be shifted manually via steering-wheel-mounted paddles.

SH-AWD(TM) is standard in the RDX to maximize available traction while improving handling balance and responsiveness. SH-AWD(TM) is Acura's patented all-wheel drive system that distributes the optimum amount of torque not only between the front and rear axles but also between the left and right rear wheels. The system's direct yaw control helps reduce understeer to enhance steering accuracy and add to total cornering power.

Responsive handling is further aided by fully independent front and rear suspensions. The MacPherson strut front and trailing arm-type multilink rear systems are tuned for compliant control, and assisted with front and rear anti-roll bars for flatter cornering. Standard Vehicle Stability Assist (VSA(R)) with traction control further enhances controllability and grip.

The RDX exterior styling further emphasizes the SUV's sporty athleticism. It has a taut, muscular presence with standard 18-inch wheels and tires that work together with large wheel arches, aggressively raked body sides, a steeply raked windscreen and a short rear overhang. A unique rear hatch, finished with a replaceable panel to reduce the cost of accident repair, allows the rear of the body to smoothly transition to the rear bumper. This permits a more custom look and also eases the act of loading and unloading cargo.

Inside the RDX, the front-seats feature a high "eye point" that provides a confident field of view. The 3-passenger rear seat has a 60/40 split-folding capability and, when folded flat, significantly expands the load area and increases the cargo volume to 60.6 cubic feet of storage. There are multiple interior storage compartments positioned throughout the interior, including a large (and lockable) dual-level center console located conveniently between the front seats that can securely accommodate a briefcase.

The RDX features an array of electronic features that set it apart from the competition. These include a dual-zone automatic climate control system, a Multi-Information Display (MID), and LED backlit gauges with progressive illumination. Also standard is an impressive 360-watt 7-speaker Acura Premium Sound System with a multi-format 6-disc changer, AM/FM tuner, XM(R) Satellite Radio, and the convenience of an MP3/auxiliary input jack for easily connecting audio devices such as an iPod.

Just one optional package is offered on the RDX. The Technology Package heightens the RDX's appeal to technology-savvy customers with a range of advanced features. The centerpiece is a 10-speaker Acura/ELS Surround(TM) Premium Sound System designed by legendary recording engineer Elliott Scheiner. When playing DVD-Audio discs (DVD-A), this advanced 410-watt system delivers eight discreet audio channels (instead of the usual two) to create an uncannily accurate listening experience. With its multi-format 6-disc DVD-A changer, AM/FM tuner and XM(R) Satellite Radio, the system is as versatile as it is powerful.

The Technology Package also includes several information and communications such as HandsFreeLink(TM) and the Acura Navigation system. HandFreeLink is a wireless telephone interface that is designed to work with many Bluetooth-enabled mobile phones (sold separately). In addition, the AcuraLink(TM) Satellite Communication System with Real Time Traffic allows for 2-way communication between Acura and the vehicle, providing customers with the latest information specific to their vehicle.

The Acura Navigation System with Voice Recognition(TM) can display up-to-the-minute traffic information including flow, accidents, construction and weather conditions on freeways in 31 major metro areas (where available). When the transmission is placed in reverse, the Navigation screen displays the image from a rearview camera to make parking easier. In addition, the AcuraLink(TM) Satellite Communication System with Real Time Traffic allows for 2-way communication between Acura and the vehicle, providing customers with the latest information specific to their vehicle.

Technological leadership also extends to safety engineering. The RDX's Advanced Compatibility Engineering(TM) (ACE(TM)) body structure substantially contributes to passenger safety. ACE(TM) distributes collision loads through the body structure, leaving the passenger cabin more intact for improved occupant protection. Specially designed frame members make the RDX more compatible with smaller vehicles in the event of a vehicle-to-vehicle frontal collision. Likewise, a specially engineered hood and other components help reduce the chances of pedestrian injury in the event of a collision with the vehicle.

Inside the RDX is a full complement of passive safety features. Key technologies include the latest generation of dual-stage, dual-threshold airbags for the driver and front passenger, plus side airbags for the driver and front passenger and side curtain airbags with a rollover sensor for all outboard occupants. Child-seat mounting systems, LATCH (Lower Anchors and Tethers for Children), allow the quick and secure installation of a child seats.

The RDX will be assembled in Marysville, Ohio, on the same line as the Acura TL sedan. It is the first Acura light truck to come from the facility.

Like all Acura models, the 2007 RDX is covered by a comprehensive 4-year/50,000 mile bumper-to-bumper limited warranty and a 6-year/70,000 miles powertrain limited warranty. Additional ownership benefits include Acura Total Luxury Care (TLC), which provides free 24-hour roadside assistance, concierge service and trip routing.

For more information about Acura vehicles, please visit www.acura.com. For media inquiries, please go to www.acuranews.com.

# # #

*Preliminary mileage estimates determined by Acura. Final EPA mileage estimates were not available at the time of printing. Use for comparison purposes only. Your mileage may vary.

*All horsepower and torque specifications reflect revised SAE J1349 net calculations.


RDX Specifications
Engine TypeTurbocharged 2.3-liter, 16-valve, DOHC i-VTEC(R) 4-cylinder
Horsepower, SAE net240 hp at 6000 rpm
Torque, SAE net260 lbs-ft at 4500 rpm
Redline 6800 rpm
Bore and Stroke 3.4 x 3.9 inches (86 x 99 mm)
Displacement2300 cc
Compression Ratio8.8:1
Induction SystemMulti-Point Fuel Injection
Valvetrainintelligent Variable Valve Timing and Lift Electronic Control (i-VTEC(R)), 4 valves per cylinder, chain-driven, DOHC
Engine BlockDie-cast lightweight aluminum alloy
Emission CertificationCARB LEV II ULEV and EPA Tier-2, Bin-5
Throttle Drive-By-Wire Throttle System(TM)
Ignition SystemDirect ignition system with knock control
Recommended FuelPremium Unleaded
LayoutTransversely mounted, front-engine
DrivetrainSuper Handling All-Wheel Drive(TM) (SH-AWD(TM))
Transmission5-speed automatic with F1(R)-style Sequential SportShift paddle shifters and Grade Logic Control
Ratios (:1)1st2.697
Body TypeAll-steel unit body
Front SuspensionMacPherson Strut
Rear SuspensionIndependent multi-link
Shock AbsorbersFront and Rear Twin Tubes
Stabilizer Bars

21 mm diameter
19 mm diameter
Steering TypeTorque-sensing variable power-assisted, rack-and-pinion
Steering Ratio15.1:1
Steering Wheel Turns (lock to lock)2.76
Turning Circle (curb to curb)37.4 ft
Wheels18 X 7.5 JJ cast alloy wheels
TiresP235/55R18 99V high performance all-season
Braking System4-wheel Anti-lock Braking System (ABS) with Electronic Brake Distribution (EBD) and Brake Assist
Front Discs11.7 inch (297 mm) diameter ventilated (w/ dual piston caliper)
Rear Discs12.0-inch (341 mm) diameter drum in disc
Stability ControlVehicle Stability Assist (VSA) with Traction Control System (TCS)
Cooling System2.4 gallons/9.1 liters
Fuel tank18.0 gallons/68.0 liters
VolumesPassenger - 101.4 cubic ft
.Cargo w/ rear seats up - 27.8 cubic ft
.Cargo w/ rear seats down - 60.6 cubic ft
Engine OilChange w/ Filter- 4.62 quarts/4.4 liters
.Total - 6.09 quarts/5.8 liters
Fuel Economy
EPA Fuel Mileage - City/Highway19/24* mpg (City/Highway)
*Preliminary mileage estimates determined by Acura. Final EPA mileage estimates were not available at the time of printing. Use for comparison purposes only. Your mileage may vary.
Exterior Dimensions
Wheelbase 104.3 in(2650 mm)
Track, front61.9 in (1572 mm)
Track, rear62.6 in (1590 mm)
Overall Length18037 in(4590 mm)
Overall Width73.6 in(1869.4 mm)
Overall Height65.2 in(1656.1 mm)
Minimum Ground Clearance (1G)6.25 in(158.8 mm)
Approach/Departure Angle.Approach-28.0 degrees
Departure-22.0 degrees
Breakover-18.5 degrees
Curb Weight3968 lbs (1800 kg)W/ Technology Pacage - 3982 lbs (1800 kg)
Weight Distribution (% front/rear)52/48
Maximum Towing Capacity1500 lbs
Interior Dimensions
FrontHead Room38.7 in(982 mm)
.Leg Room41.8 in(1062 mm)
.Hip Room54.4 in(1383 mm)
.Shoulder Room58.2 in(1479 mm)
2nd RowHead Room38.3 in(972 mm)
.Leg Room37.6 in(954 mm)
.Hip Room53.0 in (1347 mm)
.Shoulder Room56.3 in (1430 mm)
Vehicle4-year/ 50,000-mile limited warranty
Powertrain6-year / 70,000-mile limited warranty
Outer Body Rust-Through
5-year / unlimited-mile limited warranty

Engineering Features

  • Turbocharged and intercooled 2.3-liter, 240 hp, 16-valve, DOHC i-VTEC(R), 4-cylinder engine
  • i-VTEC(TM) - intelligent Variable Valve Timing and Lift Electronic Control
  • CARB LEV II ULEV / EPA Tier-2, Bin-5 Emission Certification
  • 5-speed automatic transmission with F1(R)-style Sequential SportShift Paddle Shifters and Grade Logic Control
  • Super Handling All-Wheel Drive(TM) (SH-AWD(TM))
  • Drive-by-Wire Throttle System(TM)
  • MacPherson Strut front suspension
  • Multi-link independent rear suspension
  • Torque-sensing, variable power-assist rack-and-pinion steering
  • 4-wheel Anti-lock Braking System (ABS)
  • Electronic Brake Distribution (EBD)
  • Brake Assist
  • 18-inch alloy wheels with P235/55VR18 high performance All-Season tires

Safety and Security Features

  • Dual-stage, dual-threshold front air bags (SRS)
  • Front side airbags with passenger position and height sensors
  • Side curtain airbags with rollover sensor
  • 4-wheel anti-lock braking system (ABS) with Electronic Brake Distribution (EBD) and Brake Assist
  • Vehicle Stability Assist (VSA) with Traction Control System (TCS)
  • Tire Pressure Monitoring System (TPMS)
  • High-Intensity Discharge (HID) headlights
  • Fog lights
  • Daytime Running Lights (DRL)
  • Active front head restraints
  • Advanced Compatibility Engineering (TM) (ACE(TM)) body structure
  • Impact-absorbing crumple zones (front and rear)
  • Theft-deterrent system with electronic immobilizer
  • Rear-window defroster with timer
  • Side-impact door beams
  • Emergency tailgate opener
  • Mirror-integrated LED directional signals
  • 3-point heigh-adjustable seat belts with load limiters and pre-tensioners (front)
  • 3-point seat belts (rear)
  • Breakaway inside rearview mirror
  • LATCH (Lower Anchors and Tethers for Children) child-seat mounting system
  • 276-degree all-around visibility

Exterior Features

  • Power moonroof with tilt, auto-open/close, auto-reverse and key-off operation
  • Heated outside mirrors with passenger reverse gear tilt-down and integrated directional signals
  • 18 X 7.5 inch cast aluminum-alloy wheels
  • Auto-off headlights
  • Body-colored tailgate spoiler
  • Chrome door handles
  • Rear privacy glass
  • Speed-sensing, variable intermittent windshield wipers
  • Intermittent rear-window wiper
  • Dual-outlet exhaust

Interior Features

Seating and Trim

  • Sport seats with perforated leather-trimmed interior
  • 8-way power driver's seat w/ power lumbar support
  • Heated front seats
  • Lockable front center console with dual-level storage, coin, card and pen holders
  • Rear seat armrest
  • 60/40 split folding rear seat
  • Leather-wrapped steering wheel

Comfort and Convenience

  • Dual-zone automatic climate control with micron air filtration
  • Cruise control
  • Power windows with driver and front passenger's auto-up/down, auto-reverse and key-off operation
  • Remote entry ssytem
  • Homelink(R) programmable transmitter
  • Tilt and telescoping steering column
  • Steering wheel-mounted controls (cruise control and audio)
  • Overhead map lights
  • Ambient cabin lighting
  • Cargo area lighting
  • Beverage holders (front and rear)
  • Front-door utility boxes
  • Seatback pockets
  • Aluminum threshold garnish
  • Reversible hard cargo lid
  • Carpeted floor mats
  • Driver's and passenger's illuminated vanity mirrors
  • 12-volt power outlets (front and center console)
  • 360-watt Acura Premium Sound System with AM/FM tuner, 6-disc in-dash CD, MP3, WMA, and 7 speakers
  • XM(R) Satellite radio
  • MP3/auxiliary input jack
  • i-VTEC(R) turbo boost meter
  • Maintenance Minder system
  • Multi-information display (MID)
  • Exterior temperature indicator
  • Illuminated ignition, power-window and door-lock switches, steering wheel controls and overhead controls
  • LED backlit gauges with progressive illumination
  • Center information display screen

Optional Technology Package

  • Acura Navigation System with Voice Recognition(TM) and rearview camera
  • AcuraLink(TM) satellite communication system with real-time traffic
  • HandsFreeLink(TM) wireless telephone interface
  • 410-watt Acura/ELS Surround(TM) Premium 10-speaker Sound System with 6-disc CD, DVD-Audio, DTS(R) and Dolby(R) Pro Logic(R) II
  • Sub-display with clock, audio and HVAC information
  • GPS-linked, solar-sensing, dual-zone automatic climate control sytem
  • Auxilary information display
  • Programmable feature customization