Ok, when I first bought 2011 Gen 3 I could achieve low 50's mpg in town. It would drop to 46-48 on the highway, we have lots 80 mph we're I live. At 130,000i noticed it dropping significantly. Decided I liked the car but knew it needed maintenance. I replaced the hybrid battery with a Nexcell lithium, replaced the spark plugs, replaced the egr valve with new, cleaned out the tubed, replaced PCV, replaced all fluids. All Coolant, transmission and even a new 12v start battery I wanted to last a lot longer. I now get 42 mpg in town and 44 on the highway up to 65 mph. At 80 it drops to 38 mpg. This is all via the computer which is close enough for me. That's significantly lower than when I first got the car with 50,000 miles. Anything else I should check. Thanks in advance.