From Infiniti press: Last year, the Infiniti Division of Nissan Motor Corporation U.S.A. introduced a luxury sport utility vehicle (LSUV) that promised to be a fierce competitor in this rapidly expanding market segment - the Infiniti QX4 luxury sport utility vehicle. The QX4 surpassed all of Infiniti's initial expectations, carving a sales niche in the LSUV segment and capturing top honors in the 1997 J.D. Power and Associates Initial Quality Study (IQS) with a ranking of Best Compact Sport Utility Vehicle.
For 1998, the QX4 remains the same top-tier vehicle, combining quality with value; rugged characteristics amidst coddled luxury; and brawny sport utility strength with engineered finesse - all found only in a premium luxury vehicle. Priced under $40,000, the QX4 offers an abundance of standard equipment, including: advanced All-Mode 4WD®, system, unique MonoFrame™ body construction and front strut suspension, Sophisticated Optimized Fuel Injection System (SOFIS), stylish exterior design and a luxurious interior cabin.
The QX4 is powered by a 3.3-liter SOHC 12-valve V6 engine that produces 168 horsepower at 4,800 rpm and 196 ft-lbs of torque at 2,800 rpm. Over 90 percent of the engine's torque is available in the 1,500 - 1,800 rpm range - providing exceptional power for low speed off-road driving and maintained power at higher engine speeds for throttle response while accelerating, towing or cruising over long distances. All QX4s are equipped with a standard electronically controlled 4-speed automatic transmission mated to the advanced All-Mode 4WD system.
The QX4's engine utilizes SOFIS, resulting in better fueeconomy, more power and lower emissions output than that of comparable engines equipped with conventional fuel injection systems. This electronic sequential multi-point fuel injection system optimizes the air/fuel mixture under all driving conditions by sensing and correcting fuel flow delays inside the intake ports.