Roadtrip -- 26.5 mpg
Thread Starter
Super Member
Joined: Oct 2007
Posts: 811
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From: Toronto, ON
2011 E350 4Matic Wagon, 2013 C350 4Matic Sedan
Roadtrip -- 26.5 mpg
Just got back from a 500 km roadtrip from Toronto to Owen Sound and back. Going up yesterday, it was heavy rain and fog. The car was great through the rain. The rain-sensing wipers kept up, and the tires posed no problems through even the large puddles. Coming back today, it was really windy (100 km/h or 62 mph) winds and the car got twitchy, which was perfectly understandable. We kept up at 120 km/h with confidence as I watched the SUVs and pick-ups essentially driving in S'es. I was surprised to have only seen one accident.
I love the planted feel of the car at highway speeds, but it seemed most happy doing between 80 km/h and 120 km/h on the two-lane roads. Very docile. Once in a while, I would punch the throttle to pass, and that brings the engine and the exhaust to life.
On relatively hilly (not mountainous) side roads, I was able to get the car down to 8.7 L/100km (27 mpg). But cruising on the highway at 120 km/h seemed to have brought it back up to 9.0 L/100km (26 mpg).
My final average for the return trip:
And for our non-metric friends:
I love the planted feel of the car at highway speeds, but it seemed most happy doing between 80 km/h and 120 km/h on the two-lane roads. Very docile. Once in a while, I would punch the throttle to pass, and that brings the engine and the exhaust to life.
On relatively hilly (not mountainous) side roads, I was able to get the car down to 8.7 L/100km (27 mpg). But cruising on the highway at 120 km/h seemed to have brought it back up to 9.0 L/100km (26 mpg).
My final average for the return trip:
And for our non-metric friends:
MBWorld Fanatic!
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From: Irvine, CA
C300 Sport, MM, P1
wow thats really good mpg! you know, i didnt even know the instrument panel had a function to calculate all that. maybe i really should read the manuel! glad you enjoyed your trip. 
Newbie
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From: Kansas City, MO
2008 C300 Sport 4Matic
I got my C300 Sport 4Matic in November. I live close to work, so I only have about 1,400 miles on it so far. I have been getting better MPG each drive, but currently am about 23 - 24 MPG on the highway and 18 or so in the city. Hopefully it gets broken in a bit more and improves.
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From: Irvine, CA
C300 Sport, MM, P1
you guys are posting good info. i live only a mile from work, and i bought my car in Nov as well with the OD reading 629 miles to date so i cant really tell what the max mpg my car can get besides what it says on the sticker. keep us updated with your MPG.
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'08 C 300 Sport, '01 SL 500 & '08 Nissan Frontier SE Crew Cab 4WD
-Ryan
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From: Vancouver, BC
2008 Mercedes C300 4Matic
I agree, I drove both the C300 and my brothers cadillac CTS and the C300 does feel more powerful, and I thought the caddy was pretty quick. I'm happy with the performance of the 300 so far.
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Thread Starter
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Joined: Oct 2007
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From: Toronto, ON
2011 E350 4Matic Wagon, 2013 C350 4Matic Sedan
I find that the fuel economy changes significantly between highway driving and city driving. I don't recall my other cars varying this much.
On that note, 8.8 L / 100km was much better than what I expected from a car that only had 2600km on it. I didn't expect to fully break in the car until about 8000 km. It seems to be settling in very nicely, and I am hoping that it will get even better over the course of the next 4000 km.
Anybody else try driving the car in that 80 km/h to 100 km/h sweetspot?
On that note, 8.8 L / 100km was much better than what I expected from a car that only had 2600km on it. I didn't expect to fully break in the car until about 8000 km. It seems to be settling in very nicely, and I am hoping that it will get even better over the course of the next 4000 km.
Anybody else try driving the car in that 80 km/h to 100 km/h sweetspot?
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C300 Sport/Palladium Silver on Black/P2
My driving seems to have me avg. about 22 MPG. Not bad. I'm idling a lot (like at starbucks cough cough), and the revs are so low on idle I think it's better than my last car on fuel, when doing this.
Maybe I'll even see improvements, once the car has more miles (It is still under 500).
Maybe I'll even see improvements, once the car has more miles (It is still under 500).
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Joined: Nov 2007
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C300 4Matic
I have the C300 4Matic version, and I too found the acceleration to be fast enough for daily driving and passing by other slow cars on the highway.
I find the acceleration to be fast from 80km/h to 120km/h .
One minor annoyance with the 7 speed auto tranny I find in our car is a bit slow to respond when shifting to the next gear, which takes approx 1 second. One day I as trying to pass this car on the highway in front of me by changing to the left lane. As I signaled the right turn signal, I shifted using the semi-manual to down shift one gear. As I down-shifted, there wasn't any response and then as I was about to tap the gear knob again, THEN it shifted down.
Anyone else thought the response time was kind of slow?
Only when you shift the gears with the gear knob. Not when its on at auto shift.
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LOADED 08' C350 & 14' GLK-350 Diamond White (P1, MM, AMG Pkg, Ln Trkng, Htd Sts, Keylss Go)
please see my thread where I and a few others posted over 30MPG on highway while cruising in the sweet spots...
I have a picture i posted of 31 I think, as my record for mpg
I have a picture i posted of 31 I think, as my record for mpg
Thread Starter
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Joined: Oct 2007
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From: Toronto, ON
2011 E350 4Matic Wagon, 2013 C350 4Matic Sedan
I am looking for more "real world" comparisons. 
: I betcha if I had reset the trip after the car has been rolling, I should get better mileage. But in the real world, there will be stop-and-go. On this particular trip, I was stuck behind a tractor (the real kind) for about 6 km and could see my MPG dropping.
Maybe there should be two running tallies:
(1) Best ever segment MPG
(2) Best historical MPG
Overall, 2500 km on the car and I am running 12 L/100km.
: I betcha if I had reset the trip after the car has been rolling, I should get better mileage. But in the real world, there will be stop-and-go. On this particular trip, I was stuck behind a tractor (the real kind) for about 6 km and could see my MPG dropping. Maybe there should be two running tallies:
(1) Best ever segment MPG
(2) Best historical MPG
Overall, 2500 km on the car and I am running 12 L/100km.
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From: SFV CA
2008 Black Out C350 Saks Edition / 87 VW GTI
Just got back from a 500 km roadtrip from Toronto to Owen Sound and back. Going up yesterday, it was heavy rain and fog. The car was great through the rain. The rain-sensing wipers kept up, and the tires posed no problems through even the large puddles. Coming back today, it was really windy (100 km/h or 62 mph) winds and the car got twitchy, which was perfectly understandable. We kept up at 120 km/h with confidence as I watched the SUVs and pick-ups essentially driving in S'es. I was surprised to have only seen one accident.
I love the planted feel of the car at highway speeds, but it seemed most happy doing between 80 km/h and 120 km/h on the two-lane roads. Very docile. Once in a while, I would punch the throttle to pass, and that brings the engine and the exhaust to life.
On relatively hilly (not mountainous) side roads, I was able to get the car down to 8.7 L/100km (27 mpg). But cruising on the highway at 120 km/h seemed to have brought it back up to 9.0 L/100km (26 mpg).
My final average for the return trip:
And for our non-metric friends:
I love the planted feel of the car at highway speeds, but it seemed most happy doing between 80 km/h and 120 km/h on the two-lane roads. Very docile. Once in a while, I would punch the throttle to pass, and that brings the engine and the exhaust to life.
On relatively hilly (not mountainous) side roads, I was able to get the car down to 8.7 L/100km (27 mpg). But cruising on the highway at 120 km/h seemed to have brought it back up to 9.0 L/100km (26 mpg).
My final average for the return trip:
And for our non-metric friends:
Thanks for the info
Thread Starter
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Joined: Oct 2007
Posts: 811
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From: Toronto, ON
2011 E350 4Matic Wagon, 2013 C350 4Matic Sedan
JRAMGV8 -- your E350 has the same engine so I'd expect similar mileage performance. Your engine is pulling a bigger car, but mine's driving all 4 wheels.
TANKTUBE67 -- I did an average of 47 mph over the entire 130 mi trip. That includes a few minutes of warmup, doing 90km/h on some side roads, getting stuck behind that F!ing tractor, red lights, and 120 km/h on the highway. Since the police started confiscating cars if caught driving 50 km/h over speed limit, I have slowed down (a little).
TANKTUBE67 -- I did an average of 47 mph over the entire 130 mi trip. That includes a few minutes of warmup, doing 90km/h on some side roads, getting stuck behind that F!ing tractor, red lights, and 120 km/h on the highway. Since the police started confiscating cars if caught driving 50 km/h over speed limit, I have slowed down (a little).
MBWorld Fanatic!
Joined: Nov 2007
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From: SFV CA
2008 Black Out C350 Saks Edition / 87 VW GTI
JRAMGV8 -- your E350 has the same engine so I'd expect similar mileage performance. Your engine is pulling a bigger car, but mine's driving all 4 wheels.
TANKTUBE67 -- I did an average of 47 mph over the entire 130 mi trip. That includes a few minutes of warmup, doing 90km/h on some side roads, getting stuck behind that F!ing tractor, red lights, and 120 km/h on the highway. Since the police started confiscating cars if caught driving 50 km/h over speed limit, I have slowed down (a little).
TANKTUBE67 -- I did an average of 47 mph over the entire 130 mi trip. That includes a few minutes of warmup, doing 90km/h on some side roads, getting stuck behind that F!ing tractor, red lights, and 120 km/h on the highway. Since the police started confiscating cars if caught driving 50 km/h over speed limit, I have slowed down (a little).
Thread Starter
Super Member
Joined: Oct 2007
Posts: 811
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From: Toronto, ON
2011 E350 4Matic Wagon, 2013 C350 4Matic Sedan
