First of all, this is truly a great forum with a lot of useful info. I'm very happy that I found this being a semi-new Lexus GS300 owner.

I purchased a 2003 Lexus GS300 about 2 months and so far it has been a great experience. However, recently, I have noticed a considerable loss of power while driving. It seems as if the car has a much harder time accelerating and unlike before, I can actually feel the gears shifting (especially when going from 0-20). Whereas the car zoomed to 60 in the past, now it seems to hesitate to get up there.

Any ideas on what the problem can be? Any suggestions would be greatly appreciated.

 

i think sometime back someone had the same problem as you. It turned out to be bad gasoline in the gas tank. Maybe you should try a different gas station?

 

Or just reset the ECU.