I bought this car 2010 prius few days ago. I reset trip to see my results.currently iam driving in london city area.iam not happy with mpg 39 avg.
39 isn't much below average. stop and go traffic takes a tremendous amount of energy to repeatedly get the car moving from a standstill. best to measure your mpg's at the pump and calculate average over many tanks. what types and pressures? clean air filter? hvac use? 12 volt and hybrid battery condition?
Ensure you're all updated on maintenance and try the pulse-and-glide method. I can get 65 mpg in both our Prius and my wife's Corolla Hybrid. Ahmed (The Care Care Nut) explains it in this video: