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Crazy C300 MPG

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Old Jun 17, 2012 | 04:44 PM
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09 C63 AMG, 15 ML63 AMG, 13 S550 4MATIC
Crazy C300 MPG
Went 58 miles today and couldint belive the car got 28.7mpg
Attached Thumbnails Crazy C300 MPG-img_1493-1-.jpg  
Last edited by MBHC; Jun 17, 2012 at 04:54 PM.
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Old Jun 17, 2012 | 04:53 PM
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C350
Nice! I think the highest I've ever seen mine is about 26.somethingorother...
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Old Jun 17, 2012 | 06:32 PM
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Originally Posted by MBHC
Went 58 miles today and couldint belive the car got 28.7mpg
I have gotten up to 32.1. If you baby it and keep the speed between 55-60mph should do well over 30mpg

https://mbworld.org/forums/c-class-w...g-highway.html
Last edited by tasho3; Jun 17, 2012 at 06:35 PM.
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Old Jun 17, 2012 | 07:44 PM
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2008 C300 Sport
I did 31 on a recent trip from Houston to San Antonio keeping it around 70 mph on the highway.
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Old Jun 17, 2012 | 07:48 PM
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'08 Mercedes C300
I've gotten 31 mpg on a 70 mile trip going 70 mph at 11 pm, so it was around 58 degrees.
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Old Jun 17, 2012 | 08:06 PM
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Another round of ICE
Originally Posted by Sportstick
The beginning of a highway trip....very flat, but the speed speaks for itself.
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Old Jun 17, 2012 | 09:17 PM
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I drive about 15 miles to work and I average about 25-29 mpg, sometimes more, on my commute to work. A LOT more if I resetted it on the highway.

I drive SLOOOOOW though. Right around 52-55 mph.
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Old Jun 17, 2012 | 09:20 PM
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Old Jun 18, 2012 | 08:44 AM
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2012 C300 4Matic
Does this get better as the engine gets broken in? I just got a new c300 and its still pretty bad. Seems like I am averaging under 20mpg.
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Old Jun 18, 2012 | 11:30 AM
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^ Driving style probably.
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Old Jun 18, 2012 | 05:54 PM
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97 S600 coupe/gf 16 C300 Lux. Former: 08 GL450, 83 300D, 97 C230, 08 c300 luxury, 92 500SL, 93 400E
You beat me
31.9 is my best. No ac, running 75-80 with cruise, except on downhill where I would speed up and let it coast uphill. Still not bad for 75-80!

Anyone higher than 33? Under what conditions did you pull 33? My mileage seems to have gotten notably better after 20k...

Originally Posted by ncglock
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Old Jun 18, 2012 | 05:56 PM
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97 S600 coupe/gf 16 C300 Lux. Former: 08 GL450, 83 300D, 97 C230, 08 c300 luxury, 92 500SL, 93 400E
Originally Posted by milan187
Does this get better as the engine gets broken in? I just got a new c300 and its still pretty bad. Seems like I am averaging under 20mpg.
See what I just posted above. I believe so, and would like to hear other accounts to verify this.
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Old Jun 19, 2012 | 12:43 AM
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i just happened to borrow my mom's 2008 c300 this past weekend because i was going on a road trip 5 hours each way and didn't want to add the miles to my car....i got 30.something mpg the way there and 31.9 mpg on the way back. i was probably going a steady 80-85 the whole way except there was a lot of slowing down/speeding up weaving through traffic passing people. i thought that was the norm for the car though. she has about 40,000 miles on her car.
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Old Jun 19, 2012 | 11:47 AM
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97 S600 coupe/gf 16 C300 Lux. Former: 08 GL450, 83 300D, 97 C230, 08 c300 luxury, 92 500SL, 93 400E
Originally Posted by SheryarYO
i just happened to borrow my mom's 2008 c300 this past weekend because i was going on a road trip 5 hours each way and didn't want to add the miles to my car....i got 30.something mpg the way there and 31.9 mpg on the way back. i was probably going a steady 80-85 the whole way except there was a lot of slowing down/speeding up weaving through traffic passing people. i thought that was the norm for the car though. she has about 40,000 miles on her car.
Really interesting. I think there is a sweet spot for these cars, being that they sort of "lug" in 7th at anything under 75 or so. I've pondered what my mileage would be running 85-90 with no AC on, as it's not lugging at that point, and still not turning 3k. Some combo of gearing/hp at that RPM/drag coefficient. My car definitely gets better MPG at 75+ than below 70.
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