Chrysler 300M MPG Real World Numbers

19 messages, Last post on Sep 12, 2007 at 3:54 PM

You are in the Chrysler 300M Forum. Your Hosts are pat & karens

#17 of 19 Chrysler 300M MPG Total by quietflyer Mar 21, 2007 (5:42 pm)
Sorry to take so long to get back to this. I finally totaled up all my fuel purchases and mileage. I now have 140,900 miles on my '99 300M. Adding up all the fuel I've pumped I calculated 24.79 MPG for the 102,000 miles I have driven. I am still using regular 87 octane gas. I don't drive hard but do stay with traffic at 70 or higher.
#18 of 19 Computer-calculated MPG by richb64 Sep 11, 2007 (1:43 pm)
I normally keep track of mileage by filling up the tank and dividing the number of miles (using the trip odometer) by the gallons of gas purchased. I've noticed that this is normally 2-3 MPG better than what the onboard computer has calculated. Replies to this message: naatz1 (Sep 12, 2007 3:54 pm)
#19 of 19 Re: Computer-calculated MPG [richb64] by naatz1 Sep 12, 2007 (3:54 pm)
Replying to: richb64 (Sep 11, 2007 1:43 pm) I checked mine on a trip 2 weeks ago and saw the same: computer said 24.5 mpg average for 200+ miles but the odometer and fuel fill showed 26. At least reality is BETTER than the computer. For what it's worth, I just got 27.9 on the same Madison WI to Rochester MN return trip this past Sunday ... 70mph in WI and 75 in MN, minimal use of AC, 4 adults but a -fully- packed trunk. I am very happy with that in this size of vehicle and engine.