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Mercedes-Benz C-Class Real World MPG

16 messages,  Last post on Oct 02, 2008 at 3:54 AM

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#8 of 16 Mid-Grade Gas by bowgar Feb 16, 2007 (4:12 pm)
I just purchased a 2001 C320. Has anyone tried regular or midgrade gas? I talked to a local owner of a 2003 and he said he used mid-grade with no problems, and even regular worked O<, but mpg was reduced.
#9 of 16 Gas Mileage by mdunford Feb 17, 2007 (10:58 pm)
I live downtown and mostly drive downtown. I see on average 20.4 or so.
#10 of 16 C32 by riku Feb 22, 2007 (6:57 pm)
i have an 04 C32, and about 75% highway miles. I avg about 21 mpg. The best I got on the freeway was 27.0.   I'm not bragging or complaining
#11 of 16 2007 C230 MPG by fourplay56 May 06, 2007 (1:07 pm)
For my trip back & forth SF-LA: With the average speed 70~75 (calculated by the meter, though I always driving at 80 on I-5 and 75-80 on 101), the best MPG I had is 27.3 when driving on I-5, and a bit less on 101 owing to too much hill going up and down, thus I got 26.6.   During city/hwy mix mode, it's around 21~22, depends on the traffic situation.
#12 of 16 2001 C240 six speed by schatzie May 21, 2007 (10:31 am)
C240 never recorded below 20 mpg in town in runs of five miles. But these were easy runs. Highest recorded on Hwy was 32 on a 190 mile trip with AC off. Overall the computer recorded 23+, never reset. I still feel the tank was way too small and this made me nervous looking for stations trying to get out of dodge when hurricanes hit. I had to carry two 2 1/2 containers of gas in the trunk which is no way cool since gas stations are soon out or the stations are closed. You need a car that will go 450 miles and have reserve left to get out of Florida. I have a C230 now plus another car I will evacuate with. I'll leave the C230 to fare for it's self.
#13 of 16 2005 C230 Sport Sedan by lawman1967 Aug 23, 2008 (9:32 pm)
Just bought a 2005 C230 Kompressor Sport sedan with 40,000 miles. In a round trip from Pasadena to Bakersfield (120 miles each way) I got an average of 33 MPG. This is going over the Grapevine and with speed (cruise control) always at or near 75.   Going North it was 34.8 MPG, coming South was 32.1.   Needless to say, I am delighted. I actually was planning to buy a new 09 Corolla and picked the C230 instead based on reports from others of low 30s MPG.
#14 of 16 Re: Mercedes-Benz C-Class: MPG-Real World Numbers [pf_flyer] by ajay747 Sep 21, 2008 (7:49 pm)
Replying to: pf_flyer (Jun 12, 2006 8:17 am) I am new to the board and interested in a 2009 Sport with the new 7 speed auto. Does anyone have any MPGs on the 2008 or 2009 (either automatic)?   Thanks for all the good comments on this forum. Replies to this message: trauppius (Oct 02, 2008 3:54 am)
#15 of 16 by hgiles Sep 29, 2008 (7:15 pm)
12 mpg so far. I'm not complaining though. All grins here.
#16 of 16 Re: Mercedes-Benz C-Class: MPG-Real World Numbers [ajay747] by trauppius Oct 02, 2008 (3:54 am)
Replying to: ajay747 (Sep 21, 2008 7:49 pm) I completed a 575 mile Black Forest/Alps Rally trip using my new US spec C350W. I picked up the car at the factory in Sindelfingen and was told that the Engine Control Unit (ECU) had been setup for the car to run on unleaded gas down to 87 octane. They do this because the supply of high octane unleaded is spotty in Eastern Europe. I was told that when the car arrives back in the US the MB Vehicle Processing Center will reset the ECU to run on 91 octane, and that the mileage should improve as a result.   Anyway, on the trip which combined 50 MPH back roads (30%), city (15%), and the rest on the autobahn at speeds between 75-110 MPH I was pleasantly surprised to find the mileage averaged 24.9 MPG for the entire trip and peaked at 29.2 MPG on the autobahn at about 85-90 MPH. The auto transmission was kept in Comfort mode and I avoided fast starts and high RPM (as recommended during break in).   I am leasing a Saturn Aura XR (252 HP/V6/auto) and get about 21.5 MPG in my mainly highway commute to work. I think the Benz will do better.

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