My 2002 CLK55
Highway: 24 MPG
City: 14 MPG

yeah, that sounds about the same as my 2001 CLK430.

My 2004 CLK cabriolet get about 14mph and that's as a daily driver.
Stupid car thirsts $4.20 gallon premium here in San Diego.
I have to fill the tank like every 5 days.

Has any one tried the gas engine clears? and if so did you get better MPG?

Sounds like the same as us over here in san Francisco. Don't worry you're not alone. Also, the price is still going up!

CLK 430: 140,000 miles was about 12mpg Hgwy

but after fresh tune-up: new wire set, 16 spark plugs, air filters, fuel filter/regulator, and New Maf

im now at 27mpg....not bad for a V8.

also reflashed the ECU, it was stuck in transport mode, and set it to original 91RON.

I have yet to change out the O2 sensors...but I'll wait till i get the Check Engine Lights.

You guys over there have it really cheap - 1 litre of super Unleaded is £1.31 in the UK so if my calculations are correct (1 lt = 0.26 US Gallon and $0.62 = £1.00 sterling) it would work out at $8 a gallon as It works out as £5.89 per Imperial (UK) gallon

So I do £70 a week fill up - Road tax £200 a year - Insurance £1000 - car is expensive

Who cares when you put your foot down

Ya my 430 gets 24 MPG highway, I really miss the days. Of 1.30 gal gas sigh........