With its standard rated 138 horsepower 2.4-liter four-cylinder engine and optional automatic transmission, the base model accelerates with far less vigor. Getaway from a stoplight is about as quick as a Toyota RAV4, but lags behind the CR-V, and the four-cylinder versions of the Tribute and Escape. Slamming down the throttle at highway speed brings on a smooth and prompt downshift, but acceleration that's less than fulfilling. We don't doubt the rated towing capacity, but we suspect that a 1700-pound load would be taxing.
Santa Fe models equipped with all-wheel-drive use one of two different systems, depending on whether the 2.7-liter or 3.5-liter engine supplies the power.
We found the mechanical full-time four-wheel-drive system that's available with the 2.7-liter V6 capable for light off-road driving in Southern California. The system appears to do a good job of sending the torque where it's needed, even without the optional traction control. We jacked up the back tires, then stood on the accelerator, and our Santa Fe raced eagerly ahead. This system is compact and clever and was developed by Austrian four-wheel-drive specialists Steyr-Daimler-Puch. The system combines proven engineering in innovative ways. A planetary differential inside the front transaxle splits the drive torque equally between the front wheels, and 60/40 between the front and rear axles. A viscous coupling between the front and rear axles overrides the differential if the wheels at either end begin to slip. This is a simple, purely mechanical system that's been around for decades, and it works very well with no attention whatever from the driver. All four wheels are driven all the time, with the coupling limiting the difference in speed between the front and rear axles. So if a front wheel starts to spin, torque is immediately re-directed to the rear, and vice versa.
Santa Fe 3.5-liter models come with a new and more sophisticated electronic system that Hyundai calls InterActive Torque Management (ITM). This system still requires no driver input. It drives only the front wheels most of the time, but monitors their traction with a computer, and distributes torque to the rear wheels only when necessary. The main advantage of ITM is optimized fuel economy with all-wheel-drive traction. A 3.5-liter Santa Fe with all-wheel drive gets an EPA rating of 17/21, just 1 mpg below that of the front-wheel-drive version. The electronic ITM system available with the 3.5-liter V6 was developed by U.S. gearbox veteran Borg-Warner. It relies on a series of wet clutches mounted just ahead of the rear axle. A computer monitors wheel speed, throttle position and steering angle, and engages the clutches only when necessary. Next Page