What do people get for mpg in their 3.2s?
 

I'm asking mostly to figure out if my car is running properly (poor MPG can be a proxy for an out of tune engine). When I got the car a few years ago, the gas mileage was pretty bad. I replaced the O2 sensor and that helped quite a bit. I've also replaced the plugs, wires, air filter, etc. So, a follow up question would be, what else on these cars can cause bad mileage? Temp sensor?

Disclaimer, I haven't actually figured out what I'm getting, but based on how fast the gas gauge goes down, it's not great.

I've been tracking my mileage during my period of ownership (about 2 years), and am averaging about 19 mpg overall, with a majority of my driving in the city, and a lot of 10-15 minute trips.

On the highway I get 22-24, and 16-18 in the city.

I check my gas mileage every single tank and have since I installed the engine in 2003. I get 22-24 mpg in mixed city/highway driving and as high as 27 or so with mostly interstate driving.

I average a little over 18 in the city and around 23-24 highway.

Gas quality makes a difference too. We have crappy gas in central FL, seems to have the max content of ethanol year round. If I find ethanol free gas the mpg's go up. I lived in Austin, TX years ago and the gas must've been ethanol free everywhere there because I consistently got a couple more mpg until the day I moved back to FL.

Simple math at each fill up and I'm around 20MPG plus or minus. That's with lot of in-town driving. Once everything is warmed up, I don't baby the car at all. Plenty of full throttle and 5k+ rpms. Long road trips cruising at 75-80, and I'll see 25+ MPG. -J

Went on a 600 mile trip and got right at 24 MPG. Very happy with that! Nick

Been averaging 18.3 overall, I don't track separate city/highway. That's with a lot of city driving, 4 track days and an autocross since I have owned the car from November 2013. I use http://www.fuelly.com/ to track it.

I have never done an accurate calculation, but I am roughly at about 20 mpg

22 years of ownership, and I'm overjoyed if I get more than 16mpg around town, which includes 20-25% freeway driving at 75-80. I don't goose the car a lot (no way to do it in the city), and it always passes smog with flying colors, so I assume it's well tuned. Oil consumption is under 1 qt/1500 miles.

Thanks all. It seems my experience isn't out of line with the norm.

Like I said, replacing the O2 sensor did help some. For those with mileage on the lower end, it's worth a try if you haven't already.

My '84 Carrera gets a very consistant 25-26 mpg, driving normally. If I drive conservatively, which is not easy to do in one of these cars, I can get 29, almost 30 mpg.

I'm averaging 17-18 in town and 27-28 highway on E10 (10% ethanol). Ethanol-free gives better mileage, but not enough better to pay for the price difference here in Oregon.

I get about 25 mpg, but then again all I do is cruise at about 70-80 mph.

About what I get with my 3.6......:p

19 to 20 driving mostly stop and go in Los Angeles. Better when I drive the Hwy 126 to Ventura, no traffic.

I get 19-21 mixed on my 88. Maybe average speed of 30-45 due to traffic on the freeway plus the mix of city streets. I think I got 25 on highway miles once.

I didn't mention that I very rarely drive the car with the top up.

Top down driving creates a little more drag.

BTW -- where are they selling gas with less than 10% ethanol? The mandate and fines have pretty much stopped refiners from producing non-ethanol blends -- even though modern cars have no need for oxygenates -- which was the original reason for additives like MTBE (and ethanol) in the first place.

Now, of course, it is just a transfer payment to the ethanol industry -- which takes natural gas, turns it into ammonia-based fertilizer to grow corn to make fuel.

It would be more efficient to just refine the natural gas directly into synthetic liquid fuel -- saving the water and the energy loss from the various steps in the ethanol manufacturing chain.

But I guess that is a topic for another thread....

You can find an ethanol free gas station near you here: Ethanol-free gas stations in the U.S. and Canada

mpg? Im not sure... drive till @250 miles, then its time to get some gas.

I get 100 smiles per gallon, and sometimes more!!!

Very cool…except there is nothing even close to NOVA. bummer.

Lot's of pure gas in BFE.

My engine is really not broken in yet, but I must push on the fast button too much, cause I do not get 20 mpg and certainly not 100! The poor gas we can buy here in Illinois probably contributes to the fuel consumption.

I rarely drop below 20mpg. The two closest gas stations(convenience stores) to the house have 100% fuel and I run that exclusively figuring that 911 system wasnt made for ethanol.

Thanks for reminding me about the ethanol-free station finder - I've checked it from time to time, without luck, but it looks like two new stations have been added to the list, and both are in my neck of the woods. Here's to being able to get the fuel my cars were intended to run, and incidentally getting around 10% better mileage from ethanol-free fuel.

Currently I get around 21 mpg, driving on mostly country roads, which encourages spirited driving. I do notice that when I "get on it" more often that my mpg goes down noticeably - big surprise, right? My oil consumption hovers a bit above 1 qt per 1K miles in my '84 Targa with 140K miles.