I have a 2013 Prius with 270K miles. I have done the EGR cleaning, Intake Manifold, Hybrid battery fan, replaced the PCV valve, and changed the 12V battery. I also changed the spark plugs and the coils last year. The MPG Indicator in the car is inconsistent. For example, when I'm coasting, it should go all the up to 100, but several times it hovers around 50. I thought that it might be because it an older car and needs to warm up when I start driving, but it happens at all different times during the drive. I do have an oil burning issue and have been adding oil when needed...is it possible, this issue has gotten worse over the past two years and now this is the new norm? When I cleaned the Hybrid battery fan about a month ago, the total range went up from 430s to 490s. Since then, every time I fill up with gas, it has come down and is back down to 430s. My driving is not so different that the driving style should affect range that much. I'm all out of ideas on what I should do. Anybody have any suggestions? Raj.
It's a mathematical predictive algorithm based on the car's sensor data. If you want REAL data; you'll need to do manual calculations at every fill-up. The estimates are usually very optimistic vs real world. YMMV
Thanks for the reply. I used to keep track of manual calculations during the time of the cleaning to see how much of a difference it made. During that time, the range did go from 380s at the lowest to 490s a month ago. I figured that since it went down to 430s, something must have happened and was curious what I could do. I may end up doing manual calculations, but thought others might have some suggestions as to what I could do to bring the indicated range...at least to the 470s. Raj.
What kind of tires do you have? Do you fill up at different pumps? They all stop at different points, so you'll get different reading. What is your average MPG? They distance thing is just a guess. Have you replaced the head gasket yet? Have you reconditioned the hybrid battery? Has it been changed? The prolong system will do a good job of reconditioning it.
when you are coasting, the engine may still be running. it doesn't always shut down, even on new cars
