Just wanted to see if everyone gets as bad of fuel consumption as I do.

I average about 16.3 MPG.

I rarely get on it BTW. It has an LET 185mm pulley/LET tune, FWIW.

It's kind of sad to think my other car gets better gas mileage...

i average 17-18 city, 22-26 highway, last time i checked average city/highway was 19.8 mpg.. not mistreated of course..

i averaged about 20-21mpg. 12-16mpg city.. 20-26mpg highway stock. With mods 12-16mpg city 20-23mpg high way.

i live in hilly suburb... 16.7mpg max.

was getting 16-17 city, and 21-23 highway

NOW getting 22-24 city (i've seen 32mpg going 40 mph) and 25-27 highway. had a supercharger switch installed....those are numbers with supercharger switched off. as awesome as it is, i'm having some supercharger issues right now (won't turn on/stay on correctly....hopefully this issue will be resolved this week)

Current config., basically right at 19 MPG avg for everything. Mixed-driving but longer trip with mostly highway, I've seen as high as 23-24 for the trip. Low-mid teens for a quick city-driving trip, and mid single digits at the track last year.

normal driving 23-25 getting there in a hurry 16 -18 , driving like an old woman 27 but this is uk MPG

I was just checking my mpg this morning on the way to work actually. My 30 mile commute in the HOV lane doing about 65 netted 22.9 mpg by the time I parked.

My combined is 18.4 mpg at the moment.

I just got the car recently, so I am on it a bit, I average 14mpg in city, I think 20+ on highway. I did not buy this car with mpg in mind

I would get about 22-23mpg highway when I was stock

11mpg cityish. 19-20 hwy. tons of mods tho.

Is there a way to tune the software to engage the supercharger at only a certain engine speed or throttle postion? I really don't need it at the low low rpms I drive with the kids in the car....

no. the supercharger has an electromagnetic clutch. this is why i am trying this supercharger on/off switch setup. i'm heading back to the shop today and hopefully they can resolve the issue.

[QUOTE=jturkel;4128810]no. the supercharger has an electromagnetic clutch. this is why i am trying this supercharger on/off switch setup. i'm heading back to the shop today and hopefully they can resolve the issue.[/QUOTE

please keep us posted.. if you actually get all the glitches out, ill definitely try this.. not to thread jack, can you start another thread on the switch..? or update if one already exists..

the car already does this already. THe sc engages at a certain rpm or when you go WOT. If your crusing on the highway and keep it a low constant throttle the sc disengages.

Well I have a leak from the headers right now but I use about 1/8 of a tank per 12 miles more or less. Because from my house to work is about 12 miles and each route I usually use up 1/8 of a tank and fill up every other day and I tried filling up once a day before. So I have really really bad gas mileage right now >.<.

you want to compute your mpg at least by a tank because your mpg improves as your fuel goes down because the car gets lighter. Your losing mpg by filling up every 1/8 tank.

I've been averaging 14mpg in my 200% city driving, and 19mpg on the freeway while I cruise back and forth between 75 and 80.
185mm pulley/tune, shorty headers, and res delete.

Not bad for a 440hp car IMO.

not to thread jack, can you start another thread on the switch..? or update if one already exists..[/QUOTE]

i made a thread about this very thing, as i want both the SC and better fuel consumption....


https://mbworld.org/forums/c32-amg-c...witch-off.html

If anyone has any knowledge in this area please feel free to contribute to the thread linked above....

well, I just filled up 14.2gallon after 242 miles, so I avg right on 17mpg for this tank.

numbers look about right.

City driving: driving on speed limit: 16-18mpg
if i smash: 12mpg
Freeway driving: driving on speed limit: MOST RECENT from this weekend was 22.4mpg ^_^ and thats 65-75mph *****footing.
driving with a bit of smashing: 18-20mpg

**and MPG didnt change from my OEM 17" AMGs to 19" wider wheels**

Well im not filling up every 1/8 of a tank im just implying one trip from my home to work i use up 1/8 of tank

i average 16.2mpg highway and city

I'm guessing that number is at the crank, but still that is huge for this car. Mind sharing a short list of what got your there?

17 city, 21-22 highway. I actually managed to get 23 on the highway once...

I gave up worrying about it a while ago though. I figured if gas mileage was a major concern I wouldn't have bought a performance sedan. And overall it's not bad.

My buddy's Jeep SRT-8 gets...12...on the highway.... As low as 8 in the city. Now THAT is crappy. Sure is fun to drive though.