Pleased to report my 2006 just turned over 200,000. Probably best car I have ever owned. I have changed the oil and filter every 5K, using Quaker State and Pur One filter. Put in a K&N washable air filter at 25K and cleaned it every 25K since, no problems. Change cabin filter every 25K New shocks and struts at 150K, although I am thinking the shocks were ok, the right front strut was leaking. Change the spark plugs every 100K Just now changed the serpentine belt Coolant changes as recommended, only thing I have used the dealer for other than recall work. A few light bulbs have burned out now and then. On my 4th set of tires, now using Continental ecoplus, but they will not last their warranty I believe. Original brake pads, fronts still at 50%. Change out the transaxle fluid every 100K. Only real problem was the right front hub started squealing, and I changed that myself. And the cruise control handle broke when I let my grandson play in the car. Changed it myself. And the usual hatch release switch melted. Changed it myself. I have no idea of overall gas mileage. But much better than the truck I sold to buy my prius! And a big thanks to all the advice I have gleaned from priuschat!