jvanbrecht

I am currently getting between 18 to 20 mpg on my daily highway commute.. unless there is a reason for me to mash the gas pedal.. which I do somewhat often Especially when I am in a tunnel.. open windows.. jam pedal... listen to the music...

PetroC63

Maybe your problem is that you have a lead foot like the rest
of us.

SebringSilver

It'll improve (a little) after the break-in period, but getting 180 km to a tank of gas in traffic-congested Hong Kong sounds about right.

miami1lt

My favorite part of the car is when you turn it on, the "Since Start" shows 16mpg...then it slowly goes down as your start driving in town...I love showing people "Look, my car gets better gas mileage while idealing in the driveway at startup".

Anyway, 360km for 2 fillups means a refil at 180km...which is about 110miles...I'd argue that even if he is filling up when the "Reserve" light comes on, he is still not getting the mileage he should. That means on 11-12gallons, he is getting less than 10mpg...Unless he is crawling around town at 15 mph, or is constantly rubbing the pedal, he should be getting about 13-14mpg, which means, 140miles or 230km per fillup.

I'd monitor for another tank...if you can't get above about 550km on this next tank, I'd have her checked. Even low tire pressure and running A/C wouldn't lower you that much.

Was this car previously owned? If so, hope it is CPOd.

AlexCim

Yeah see thats the thing, the OP might be getting low KM's but he might getting heaps of hours because he is always sitting in traffic.

974AGK

Just had my C63 serviced 150 miles ago and currently at 16356mls[Just filled up 2hrs ago 55litres and cost £71.56 [got 161 out of that tank] 13.2 mpg approx. Always use Shell V-Power

Best I have had is 235miles on a long run

dleung22

just an update on my side,

after everyone's kind feedbacks it seems like I was just a bit sensitive before I am getting around 20L per and mileage is getting better...getting around mid to high 200s now (I have approx 700km on the car now)

Thank you for everyone's comments!
P.S. this forum has it's bad side...I have already ordered some CF parts...will post pictures when installed in a few weeks after my business trip!

emericr

Good news. Enjoy the beast and get ready to spend monies on tires and a tune.

_AMG_

Yes, The c63 is one hungry monster!!

Morro

I find I get my best mileage when going constantly at around 120-140 km/h. I check the dash each time and my mileage hovers at 13-14l/100km at that speed. When driving from 50-100 constantly and for a long time, my mileage actually gets worse.

I get about 300-350km on a full tank.

maximooz

I also noticed MPG is more favorable when holding a consistent 60+ on hwy. This car doesn't like to go slow.

With a full tank, I'm happy if I get 300 miles out of a full tank after combined street/hwy driving. On a recent trip from LA to Vegas (night driving), I got a good 20+ mpg the entire way there.

Some of the forum members mentioned changing air filters to K&N and removing charcoal filters adding an additional 1 mpg. I'm going to do that this weekend and report back in a week.

KCviper

Just over 10K miles and I am averaging 16.5 MPG mixed driving. The onboard computer ALWAYS calculates MPG at .7 to 1 MPG higher than hand calculations!! What's up with that??

Gas mileage is not this cars strong suite, unless you own major stock in an oil company

superlubricity

<- 5K miles averaging 15.2 MPG (75% Highway, 20% City & 5% Dyno )

Vegas_AMG

That's $104.27 US, insane for a tank full. But with the current administration who wants the US to be more like Europe we'll be paying the same very soon!!

AlexCim

I get really good figures on the freeway. Car is at 5000km, with a hard break in.

I just did a road trip this weekend (2000km) and on the way to my destination I averaged 11.4L/100 (sitting on 120km/h), then on the way back which was more winding country roads and also involved climbing up to higher elevations (up to 1km above sea level), I got 12.8l/100, and that was averaging 150km/h with occasional bursts to 200+ AND some winding road which involved manual mode and ESP off.

jvanbrecht

Just keep in mind, that you cannot use exchange rates to determine the cost of gas/petrol.

The cost of refinement varies based on which country your in, labour costs, etc etc, not to mention that EU taxes on fuel are significantly higher then the US.

My bet, is that when you remove taxes, and get down to the base cost for similar process to create the fuel, the costs will be somewhat similar.