Gas milage accuracy?
#1
Gas milage accuracy?
How accurate is the average milage display in the car? Mine shows 22.8 average. If I put it on instant it rarely shows 30 unless I an going down a hill. Mostly on the highway at 60 it shows in the high 20's.
#4
It will be interesting to see where mine settles in once the engine is broken in and running with a belly full of synthetic oil.
UPDATE:
I just filled the HHR on the way to work today. I logged 33.8 MPG by the calculator, The DIC was showing 33.1 mpg. Not bad for a sub 1k mile engine in a combined cycle driving environment.
Last edited by wolfman; 07-31-2009 at 06:23 PM. Reason: added information.
#5
mpg
i found mine to be very accurate...within 1-2 mpg , and never more than 3 off...i used to check it daily , or every other day...i use just a little over a tank every 2 days...i allways used the same pump set on slow fill , then checked on paper and with calculator....i used to allways have my dash thingy set on instant...i just got tired of allways watching it....i still watch it , but i keep it on average now and reset it every time i put in gas , around 8 gal a day for 270 miles....the worse i ever seen it not match my paper/calculator was when i drive it real hard , testing my mods. ..i drove a double shift today , and watched it drop to 26 mpg , i was driving hard , with ac on , the traffic was heavy and i was in a hurry to get done..
#8
Just passed 10,000 miles on my 2009 and the DIC said 21.3 and I reset it for the next 10,000 miles. My calculation is 22.7 MPG. Good enough accuracy for me - I don't have any unrealistic expectations of technology.