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Thread: whats ur fuel economy in a 3.3L Reply to Thread
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  Topic Review (Newest First)
02-11-2019 11:34 AM
BuzzLOL 13-14 seems low... how hard do you accelerate? How fast is most of your driving?
01-31-2019 01:05 PM
jereynolds_99 I always averaged about 13-14 in my '93 3.3l. and about a quart of oil every 600-700 miles
12-22-2018 05:18 PM
Tryptamine 2002 Intrepid R/T 3.5 with 165000 miles (265000km)

Daily city driving I get 16-18 MPG (depending on time of year)

Long highway drives at 60-65mph I get 23-25mpg
12-19-2018 10:44 PM
rusty69 regarding your poor mileage, you really need to calculate it from fuel used and mileage travelled. The fuel gauge is not accurate enough to draw any conclusions.
You may have brakes dragging, so after driving pull over somewhere safe and with your finger feel the wheels to see if they are abnormally warm or even hot. They should only be lukewarm, unless you were fleeing from the cops.
I've had a fuel line split on one of my Treps, so smell for leaks, and be aware that it can be hard to see a fine spray from a cracked line, sometimes.
12-19-2018 10:31 PM
rusty69 I have had several 3.5L Intrepids, LHS's and they all get 22+ mpg in mixed driving. My LHS would regularly get 25+mpg, in fact judging from the OTIS, it seemed like the faster I went the better mileage I got. I never cruised over 90mph, but you could actually watch the mileage improve while driving on the Interstate with cruise engaged. Now, my 02 Intrepid cop cars w/3.5L can get 24-25mpg hiway, too, but it seems to be more of a chore for them.
10-24-2018 09:00 AM
wreckeroo Help Required,

Tell me one thing. I have 2013 model Toyota corolla and my car is not giving me a good mileage on petrol. Why..... How can I increase my car fuel average?
05-13-2011 11:14 AM
grifilken i live in jacksonville, it's pretty much flat. and the ocean is 13 miles away from me. so not too high above sea level. umm..i try not using a/c (thats when i get 16mpg) but i live in florida so summers a hot one here and i use it when im hot (13.5 mpg). i pretty much am in all stop and go traffic, 40-45 mph usually. and i take mostly short trips (10 miles at most in one time). i try gettin on the freeway and get it up to 90ish once a month or so to blow out carbon build up.
i hope thats a good enought summary of my driving. if there is anything else i can add to assist lemme know
05-13-2011 10:40 AM
EagleESI The problem with people claiming their MPG is the whole worlds of varying variables. A person is a flat location will get better MPG than one in a hilly location, Also the altitude matters, and rather or not they are using a/c too. And what speeds? Alot of people claim this and that mpg on the highway but offer no speed, a/c on and off, drafting, no drafting.

I personally get 18-19 in City (very short trips to work with 3 red lights, mostly flat) 17.7mpg round the area if I use the a/c fully, (I life in Chattanooga so there are many hills and steep climbs) On the highway @70 mph I can get upwards to 31mpg, 35+ with drafting (even with a safe following distance one can draft) Above 75 mph my mpg go to 26-28, and last time I was at 90mph, I got a reasonable 22mpg. I do notice I get somewhere between 1-2 mpg less if I use my a/c on the highway vs windows down. This is all calculated by my OTIS. On long distance trips where avg speed is 80mph, 26.6 seems to be the overall avg, (not resetting for stops or anything)
05-13-2011 10:17 AM
Originally Posted by cokey11 View Post
Have you thought of checking for leaks? I'd be givin up a car that gets less than 24mpg
i hooked up a fuel pressure tester to the schrader valve on the fuel rail and i dont seem to be losing any pressure....HOWEVER i do smell fuel thru the vents sometimes (usually when im low on gas) and i havent been able to track this down. any suggestions on that would be really welcomed
05-13-2011 10:13 AM
cokey11 Have you thought of checking for leaks? I'd be givin up a car that gets less than 24mpg
05-13-2011 09:36 AM
SkyHawk I get around 20mpg with my 3.3L mostly city driving and that's taking it easy.
Just put in new plugs a few weeks ago and don't usually use any additives, like
Seafoam etc.
05-13-2011 02:56 AM

im getting 18 miles mpg city driving, complete tune up, compression equal across all
cylinders. 1996 eagle vision 3.3 also use seafom..
05-12-2011 10:00 AM
grifilken phew....the last two posts make me feel a little better. i drive strictly in the city as well. don't even have to use the highway hardly ever. usually short trips as well...6 miles or below.
05-11-2011 05:41 PM
Sterling I only get about 13-14mpg in my 96 3.5 in city driving. On the highway, I do get at least 24mpg though. There's a big difference if you're doing lots of stop and go. I had my car all tuned up with new plugs, wires, and filters recently too. I'm very easy on my accelerators and brakes, driving in the city, my rpms never go past 2,000 rpms,so imagine if I drove it hard haha.
05-11-2011 05:14 PM
gardidien 15-16 MPG Strictly city driving, max of 45 MPH with some heavy acceleration to get around the slow pokes ;-).
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