The original RDX concept was initiated in California and then developed in Japan. When first introduced, the RDX debuted precedent-setting engineering features for Acura, including the luxury division's first turbocharged and intercooled engine. For 2010, even more driver relevant features (with improved integration) are now part of the package.
The RDX retains Acura's "Safety Through Innovation" initiative with the application of edge standard safety technologies that combine to generate top ratings in NHTSA and IIHS crash tests. The RDX continues to offer class-leading electronic technologies that, for 2010, get even better thanks to items such as a larger navigation screen, much improved HandsFreeLink® voice recognition and technologies such as AcuraLink Real-Time Weather™ and Traffic Rerouting™.
For 2010, the big news is that for the first time ever the RDX is available in two-wheel-drive form. The 2WD design offers a vehicle weight reduction, improved fuel economy and a lower purchase price. Also for 2010, the RDX now comes standard with a rear-view camera, electronic compass, a pull handle for the rear hatch, auto-function headlights, ambient footwell lighting, a center console storage tray, better grip cupholders, USB-port connectivity such as for iPhone/iPod or USB "memory stick" use, Note function for XM Radio and revised interior colors. Externally, all 2010 RDX feature striking 18-inch diameter aluminum wheels, bold new front and rear bumper fascias, Acura's signature front grille, revised headlights and taillights, new exhaust tips and satin trim accents. For 2010, revised braking system components deliver better feel and improved durability.
Acura's RDX shares much in concept with the TSX. Though one is an SUV and the other is a sports sedan, both vehicles are designed to blend strong performance with agility and precise handling. The unique positioning of this new Entry Premium SUV within the Acura product line guided the development of a special powertrain for the RDX. A conventional 4-cylinder engine would lack the horsepower and torque needed to make the RDX a strong performer. On the other hand, a 6-cylinder would add extra weight.
A perfect solution comes in the form of a turbocharger - a first application for an Acura production vehicle. The RDX has an innovative variable flow turbocharger that overcomes the shortcomings of conventional turbo designs and delivers an unusually broad powerband with little or no lag in throttle response. In addition, Acura's turbo design provides this benefit with high reliability. This is because airflow is controlled before it enters the turbocharger, rather than within the turbocharger as in traditional variable-flow designs. Acura's variable flow turbo design thus eliminates moving components that work directly in the stream of hot exhaust gases. For 2010, the turbocharged 2.3L makes use of a new turbo inlet pipe that is thicker for reduced noise during high boost situations. Also in an effort to quell underhood noise, for 2010 the radiator cooling fan operates with reduced noise.
Architecturally similar to the TSX's 2.4-liter inline 4-cylinder, the RDX uses a 2.3-liter DOHC 16-valve inline 4-cylinder engine. Like the TSX, the RDX uses i-VTEC® valve control that combines Variable Valve Timing and Lift Electronic Control (VTEC®) with Variable Timing Control™ (VTC™). With the variable flow turbocharger working in unison with i-VTEC®, the RDX delivers strong power and torque, excellent fuel economy and low emissions.
Rated output for the 2.3L engine is 240 horsepower at 6,000 rpm and 260 lb-ft of torque at 4,500 rpm. The RDX has an EPA city/highway fuel economy rating* of 19/24 mpg (RDX 2WD) and 17/22 mpg (RDX SH-AWD™).
Source: Acura press