For 1999, the Toyota Sienna got a few additions, including a fourth door on the base model, the option of a power sliding door, and the option of an integrated child restrain system. The 1999 Sienna came in three trim levels: the base CE, the midrange LE, and the high-end XLE. The CE is for minimalists only, with air conditioning, power windows, power locks, and a cassette player all optional. The LE is better equipped, and the XLE includes luxury-like amenities, such as leather trimmed seating and a power moon roof. Available on models is an optional second sliding door. The engine is a 3.0 liter, 194 horsepower V6 that gets about 18/24 mpg. Drivers like the 1999 Toyota Sienna because it is a solid, reliable van that handles more like a car. Drivers complain that there isn’t enough cargo space, and many wish the rear seats would fold flat.