This 2006 Buick Rainier has 69K miles. It is equipped with a Powerful 4.2L V6 engine and an automatic transmission which is capable of achieving an EPA estimated 20MPG. This Buick Rainier is LOADED with Power Windows, Power Locks, Cruise Control, CD Player, LEATHER Interior, SUNROOF, NAVIGATION, Heated Seats, Steering Wheel Audio Controls, Air Conditioning, and so much more. Buick offers other benefits. Rainier rides more smoothly than the other GM models, and it's among the quietest SUVs we've driven. Rainier has a uniquely Buick style and a near-luxury sensibility. Yet it still seats five and boasts an engine powerful enough to pull a boat or horse trailer.---New Car Test Drive. We recently put this through our multi point pre-owned vehicle inspection and performed an oil change. Also we checked all tire pressures and topped off all fluids. As always, we give you our Transitowne Ultimate Advantage with Lifetime Free Oil Changes.