The four-door 2006 Toyota RAV4 is a midsize crossover SUV offered in three trim levels: base, Sport and Limited. Standard features for the base trim include 16-inch wheels, air conditioning, cruise control, a height-adjustable driver seat, a tilt-and-telescope steering wheel, a CD stereo with MP3 capability and power windows, mirrors and locks. Above this, the RAV4 Sport has 18-inch alloy wheels and wider tires, a sport-tuned suspension, color-keyed overfenders, and a roof rack. The top-line Limited includes 17-inch alloy wheels, a roof rack dual-zone automatic climate control, a power driver seat and upgraded audio with a six-disc CD changer. Many of these features are available as options on the base trim. Other options include a third-row seat, a moonroof (Sport and Limited only) and, for the Limited, leather seating and a DVD-based rear entertainment system.