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Message: <blockquote data-quote="AndyGreen" data-source="post: 761365" data-attributes="member: 349084"><p>I have a 2000 Toyota Corolla with 150,000 miles on it. I take care of this car very well and changed the oil regulary, give it tune ups, on a regular basis, etc. However, during the past 2-3 months, I have noticed a drop in horse power and it doesnt seem to have the power it once did. I drive about 24 miles to work each way and usually got around 33-36 miles per gallon but now I get about 26-28. I took it to the garage and got another tune up and he changed the oxygen sensor (whatever that does) but it still seems to lack the horsepower it once had. This car struggles to stay around 55-60 during my daily commute and really struggles to go up hills. Before I take it to the shop again and drop $200-300 dollars again, does anyone have any idea what could be wrong? Please help! Thanks.</p></blockquote><p></p>