Supgee

Hi,
I am a new owner of a 2003 C32 AMG, with about 70K miles on the clock. The car has been well maintained and garage kept, and is in pretty damn good shape.

I have a possible issue with the vehicle, and I was wondering if I could get some assistance.

When I first crank the vehicle, the fuel economy is TERRIBLE! I have seen it as low as 1.5mpg and averages about 12mpg when fully warmed up and driving like a grandma... Put my foot down and oh man... the gas gauge hits zero faster than I can hit 155mph... (not literally but you know what I mean)
The on-board diagnosis says ridiculous like 40 litres per 100km when I first start the vehicle.

Where should I start with increasing the fuel economy? Is it due for a spark plug change? What about the fuel filter?

I purchased the vehicle from a dealership and it has a one year warranty on most major components including the supercharger.
I am aware of the intercooler pump failure on this vehicle, and was wondering if there was a way to check proper operation of the intercooler pump as I may as well have that inspected and dealt with while the vehicle is under a warranty.

I appreciate your help, the vehicle is much faster and more responsive... and the handling is amazing compared to my old E class that I traded.

Thanks for your help fellow MBWorld users & 32AMG drivers.

pointman

How can mpg be good, if you aren't moving. Notice the period and not a question mark. 349 goes a long way, but not in terms of fuel economy.

And the rest, searching the forum also goes a long way.

Supgee

hi pointman,
I have spent many hours researching the benzworld.org and mbworld.org forums regarding the C32 AMG.. Please don't regard me as a "noob" who is just asking for help blindly.

I am just wondering where is the best place to start in helping to improve the fuel economy.
I am aware that 349 horsepower is a little heavier on gas than a standard 3.2 V6 engine, but I am convinced there is an issue here because I have seen videos of C32's at full RPM using 18L/100KM and I am using 19-26L/100KM just driving 60km/h around town... and in the high 20's low 30's at high RPM. It's basically dumping fuel.

Thanks..

c32///

start by checking if the car is throwing any codes, could be as simple as an O2 sensor..

pointman

How are you seeing what it is using at that moment?

Supgee

Hi,
The vehicle was checked for codes about a week ago. The technician stated:
"No Error Codes / Pending Codes Found. Systems OK"

Supgee

The C32 AMG has active fuel consumption and you can monitor the fuel consumption in real time through the COMMAND system.

pointman

Its really not a fair reading, if you factor in traffic, stop lights, etc. Best bet is taking your total miles, and dividing by total gallons on fill up.

COMAND giving fuel readings is news to me.