From Acura press: After a stellar first year, in which the MDX established itself as the #1 SUV by capturing both the Motor Trend Sport Utility of the Year and the North American Truck of the Year awards, Acura set out to make it even better, increasing its already formidable performance and further refining the MDX inside and out. For 2003, a new engine boosted horsepower from 240 to 260, a new 5-speed automatic transmission was added and the chassis and suspension were enhanced to take advantage of the additional power. A new drive-by-wire throttle system was included and the state-of-the art VTM-4® four-wheel drive system was revised to provide enhanced vehicle control during acceleration, cornering and braking.
The 2004 model year MDX received exterior styling enhancements that gave it a muscular, performance-oriented look representative of its impressive powertrain. For 2005, Acura turns its attention to updating the MDX interior with the latest technologies and enhanced safety. To that end, XM® Satellite Radio is now standard on all models. The optional Acura Navigation System with Voice Recognition™ has been enhanced to provide a quicker response time, additional voice recognition commands, more points of interest and access to the ZAGAT restaurant guide. MDX models equipped with the navigation system will also receive the OnStar system.
In addition, the HandsFreeLink™ wireless phone interface, which allows hands-free dialing to restaurants and other points of interest, is now included in the Touring Package. Models equipped with the optional Rear Entertainment System also come equipped with a 6 disc, in-dash CD player, compared to an underseat 6 disk player on the 2004 model. Chassis enhancements for 2005 include an improved Vehicle Stability Assist (VSA®) system and Brake Assist, which helps drivers apply full braking pressure in an accident avoidance situation.. Three new exterior colors are added: Desert Rock Metallic, Billet Silver metallic and Steel Blue Metallic. A larger, redesigned gas tank, increases capacity by over one gallon, and extends driving range while at the same time helping the MDX meet LEV-2 Evaporative emissions requirements.
An advanced powertrain is essential to meet the MDX's goals of providing V-8-like performance, class-leading low emissions, and excellent fuel economy. To that end, the MDX is powered by an advanced 3.5-liter, VTEC V-6 engine.
The MDX powerplant produces 265 horsepower at 5800 rpm, and 253 lb-ft of torque between 3500 and 5000 rpm. Acura's Variable Valve Timing and Lift Electronic Control (VTEC™) valvetrain, first used in the NSX supercar, adjusts the timing, duration, and lift of the intake valves according to engine speed. In conjunction with a two-stage intake manifold, VTEC yields muscular response at low- and medium-rpm, high peak-rpm performance, very low emissions, and superior fuel efficiency. A dual exhaust system increases horsepower and torque while helping to minimize emissions.