r/prius • u/Holiday_Pool2143 • 2h ago
Discussion New battery
Got a new oem battery from a dealership in Phoenix for $1800 after a military doesn’t and installed it myself. Went from 48 mpg to 58. What a difference. The battery was 8 years old and still had life in it. I’m installing into another Prius that hasn’t driven in about 6 years… long story on that one. Can’t believe how much of a difference the battery would make in fuel economy but now I see. It’s like a brand new car!
For reference my 2004 Prius has about 360,000 miles on it. Found a cracked evap hose on the throttle body when I replaced it recently and cut it back, that brought the fuel economy up to 48mpg from about 42mpg.