We each drive a '94 Buick Roadmaster Estate wagon with the LT1 V-8 motor (mine has 155K miles, my wife's only 60K miles). On the road we average 20-21mpg ...that's driving with a raw egg between foot and accelerator pedal! Also, we run on the cheapest gas (87 octane).

As gas prices go up, we just drive LESS; of course, being retired, we are in a position to do that!

Americans won't give up their bad habits (like driving big cars with lousy air penetration factors) until gas hits $5 a gallon ...at which time it will have topped $10 a gallon in Europe.

Then we'll all move back into the cities and/or develop effective public transport systems such as exist already in many European capitals.

But before that, we need a new President as well as affordable health care and decent retirement pension plans.
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You should talk, there isn't a car any bigger than a Buick Roadmaster Wagon
But anyway, our 1988 Camry can get as good as 31 mpg on the highway and 22-23 mpg in the city. You may wonder why these numbers are so high for an old Camry, well it's because the engine is extremely clogged and only gets (we estimate) about 70 HP at the most (even though the 2.2L 4-cyl motor is rated at 120 HP)

Well, at least you'll get one this year It's a good thing the US Constitution only allows a President to serve two terms, Maggie Thatcher hung around for 11 years, imagine what it would be like if Dubya was able to remain in power that long...

My 2007 Cobalt LS with an automatic gets around 28-30 MPG on average which is good for how fast I usually drive. I once got a reading of 37MPG when I was using a light foot. My 2001 Cavalier Z24 only got 24.5 MPG in comparison. My 1995 Cutlass Ciera sedan got low 20's. My 1996 Escort got around 40 MPG. My 1992 Cavalier with the V6 got around 27 MPG.

Now that premium is up to over $4.00 I went from $40-$45 for a full tank and now it's $60 per tank.

.i drive a 1997 geo metro 3 cylinder.its rated at 50 mpg but i am getting about 40..i dont do extreme hypermiling but i do what i can to save money with a few of the steps.hypermiling is great in my car cause i have no power steering or anything.

I paid £58 to fill up my 1995 BMW 318i last week. In a rural petrol station, I paid £48 to get the tank only 3/4 full.

When new (according to fueleconomy.gov) my truck got 12MPG average (11MPG in city driving, 14MPG highway). I doubt it gets that nowadays in the condition it is in. I'd say 13MPG tops, 11MPG or less average. Very sad. $102 to fill it up from empty. That is my entire day's work of pay.

I filled up the other day and it cost me $112 (87 Regular grade) I was expecting that, though. The Expedition’s fuel cell is still 28 gallons (US). The old one had a 28 gallon cell also.

Actually I have no clue how large the tank of my CTS and Neon, resp. is. But thanks to the manual trans I achieve an average of 10,2 l/100 km (23 mpg) for the CTS (with a lot of city driving) and 8,1 (29 mpg) for the Neon.
The picture below was made after driving on the Autobahn with cruise control and 140 km/h (87 mph).

(25 mpg)

The CTS has a 17 gallon full cell [tank] (if I remember right)

On automagazine.be (Belgian reference) they give 68 L, which is nearly 18 US gallons according to Google.

On my last tank fill, I achieved 7,5 L/100, by driving more quietly than usual (I do mostly city driving, but with very light traffic), I do not think I could go below that for this kind of use (on highway I guess it could go below).

How do you convert that measurement into MPG, antp? I would like to know how to do it so when people say their mileage in L/100km I can do the conversion myself and it'll be easier for me to understand

Also a question for Germaneon. Does the mileage rating display in your car vary wildly depending on how your are currently driving, or is it an overall average that stays relatively constant? I ask this becuase I have heard stories of these kind of gauges going down to 3 or 4 MPG when you floor it after a stoplight, and going up to infinty when you take your foot off the accelerator

I have that page: http://www.4wdworld.com.au/tipstricks/fuelconv.htm
But it does not give the same result as what I used in my message on the page 1 of this topic. I should remake the calculations manually to see what is right.
When the car does not move, you cannot get a consumtion per km, you can only get a consumtion per hour (usually 1L/h)

Link does not work for me.

A question though, I have heard some European members on this site refer to their cars in MPG format. Is this format also used alongside the L/100km format in some countries?

uff, I was off by one gallon ...

This site will do the calculations for you (they have many other calculators too, very useful).
I may measure everything else in metric, but L/100Km doesn't really mean anything to me. Most of the auto journalism I read is American (or British), so I only have a sense of what constitutes good or bad fuel consumption in MPG, L/100Km is just a number to me.
Thanks for the table, antp, I can remember 7L/100Km=40MPG and 35=8, it'll give me a better idea about what the metric figures mean.

My link was from an Australian site, it seems that they use UK gallon, so not very useful finally...

Thanks BlackIce, that link for conversion is nice And it gives both UK & US measures, which can be useful.

Taxiguy >> I guess that European who give measures in MPG are people from UK (maybe Ireland too?), as all the "continental" Europe use metric system for most of the things (except wheel rims and PC screens, I do not know why :D)

I thought UK was metric too? They use kilometers instead of miles right?