HONDA CIVIC HYBRID ENGINE POOR MILEAGE

My Car Is Regularly Serviced. Does Not Show Power Like Before. It Would Go To 4,000 Rpm To Reach Even 50-60 Mph. It Used To Give At Least 40...

My First Problem Is My Mpg Bars Goes Up When I Drive And When I Stop It Goes Down. Second My Steering Turns To The Left On Its Own. Lastly...