Chrysler 300M MPG Real World Numbers

I get between 24 and 26 MPG on my '99 300M in mostly highway driving. I commute 80 miles a day mostly on the interstate with maybe 7 miles of that on side roads with some stop lights. My 300M currently has 132,000 miles. I use regular gas as I have found no advantage to using higher octane gas. I bought the car 3 1/2 years ago with 38,000 miles on it. I always check the gas mileage when I fill up because I have found the MPG average on the display to be about 0.4 MPG optimistic. I keep a record of all fill ups and will total that up to get my mileage over the time I have owned the car. I will post that when I do.

#15 of 21 Re: Chrysler 300M: MPG-Real World Numbers [naatz1] by naatz1

Nov 06, 2006 (6:55 pm)

Replying to: naatz1 (Oct 29, 2006 7:05 pm)

For completeness since this forum seems to have gained some interest again, on a 200 mile freeway trip this weekend on my 04M with 32,000 miles I got 27mpg through fairly flat western Wisconsin I90 doing 70mph (don't like to go more than 5mph over posted even though many are doing much faster and it is tempting with this car!). That is about best case: no wind, 55deg, no AC obviously, cruise on, 2 people in car with maybe another 150 lbs luggage, reg 87 octane gas.

Upping the mph a bit in MN with hills and higher limits cut it to 25mpg which is what is normal. Around town commuting at 19+. Still not bad for a big car with oomph.

#16 of 21 Re: Chrysler 300M MPG by stu7

Dec 31, 2006 (4:43 pm)

I have had mine for five years and get 20 MPG in the city and have gotten 30 MPG on the highway (at 60 MPH). I use 87 octane and the car runs fine.

#17 of 21 Chrysler 300M MPG Total by quietflyer

Mar 21, 2007 (6:42 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 21 Computer-calculated MPG by richb64

Sep 11, 2007 (2:43 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 4:54 pm)

#19 of 21 Re: Computer-calculated MPG [richb64] by naatz1

Sep 12, 2007 (4:54 pm)

Replying to: richb64 (Sep 11, 2007 2:43 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.

#20 of 21 MPG by 02owner

Nov 13, 2011 (1:38 am)

About 22 mpg in mixed driving.

#21 of 21 2000 300m MPG by gabed

Apr 14, 2012 (5:23 pm)

I drive a 2000 300m to and from school and work ( both within 6 miles of my house), any ways, I've found that I fill up my tank at least every 4-5 days, and I use regular 87 gas. The on board computer is registering my mpg at about 16 mpg.

« Previous
1
2
3
Next »
Last

To POST a message, please Sign In.

Forum Tools

Search Forums

Enter Keyword(s):

Browse by Category

Browse by Vehicle

Browse by Board

Browse by Topic

View All Topics

Learn More, Do More

Edmunds Community

Explore Edmunds