I've done a check for 4 tanks now, all in-town driving in surburban North Dallas area with no road trips. Overall avg = 18.9. This seems pretty good, as my '03 PT Cruiser only got 19.5 MPG under similar conditions.
Of course, I'm retired, and don't have to fight Rush Hour too much anymore - HeHe. And, I've been trying to drive easy, what with the gas hitting $3.39 this week.

Oh, it's an '08 V6 of course.

DG

My 05 Turbo PT got 15 in town and my 02 PT 17 in town, wife drove it.LOL
my 05 SRX 15.6

12 mpg average, if i am really lucky maybe 14 mpg. just filled her up today and paid $3.83 per gallon. I am not complaining - just throwing out the numbers for comparison. 2008 V8 AWD all options (20" sports)
Best
Robert

My '04 V6 gets an average of 11.2, mainly city driving :eek: I traded in my Jeep Grand Cherokee V8 to try and get a little better gas mileage, but it seems the Jeep did better. Go figure. I am very happy with my SRX though.

06 V8
Mostly highway
18 winter
20 summer

My wife and I just returned from a trip to New Orleans from north Georgia. Stops in Atlanta, Mobile, and 3 days in N.O.
19.1 mpg
2008 V8 AWD

12 mpg average, if i am really lucky maybe 14 mpg. just filled her up today and paid $3.83 per gallon. I am not complaining - just throwing out the numbers for comparison. 2008 V8 AWD all options (20" sports)
Best
Robert

Sounds like you and I have the same vehicle. I assume you're getting those numbers from being in heavy, stop and go traffic? I've never gotten less than 15mpg and the worst on a highway trip is 18+.

I have an '06 V6 AWD, and have been doing a mini-study for the last few months on my fuel economy - mainly trying to determine if I'm better off using regular (89) or mid (91) grade fuel - in Southeast MI.

So far, I'm averaging about 0.5 mpg better with mid-grade than ragular. [Edit: I'm getting, on average, 17.6 mpg with regular, and 18.1 mpg with mid-grade fuel.] So, if regular is about $3.40 and mid is $3.50, it is about break-even in terms of $/mile. At that point, I guess I'm better off using mid-grade as I would use less fuel overall. Maybe there is some sort of performance gain using mid-grad, but I haven't noticed it.

I've also been using the trip computer to record average speed for each tank, to try to control for traffic conditions/style of driving. It's not exact, but it's the easiest data available. Interestingly, in terms of miles, my commute is about 80% freeway, but my average speed for a week of communting in SE-MI is only about 38 mph. I would have guessed a higher average speed before tracking this data. Also, I've found my trip computer consistently estimates average mpg higher than I measure/calculate. Anyway, I'll post my data soon, and let ya'll draw your own conclusions.

Hook 'em!

Also, I've found my trip computer consistently estimates average mpg higher than I measure/calculate. Anyway, I'll post my data soon, and let ya'll draw your own conclusions.

Hook 'em!

Good work. When I first got mine, with the 20" wheel package, I first verified the odometer with a highway trip and found it to be dead nuts on the money. This is necessary as all your calculations are based on the mileage and Fuel Used numbers, which I verified over 4 tanks of fuel. That also was on the money and therefore all my fuel mileage readings are also very accurate. I've always had a slight error (1) on my Corvettes and GMC truck but this SRX is very accurate for me.

Sounds like you and I have the same vehicle. I assume you're getting those numbers from being in heavy, stop and go traffic? I've never gotten less than 15mpg and the worst on a highway trip is 18+.

Yes, it's mainly city traffic. The highest I ever reached was 19 MPG doing between 65 and 70 on the highway. It's hard to stay at the speed range, I typically do 75 average, so realistically on highways i get about 17.5 MGP

Yes it's not good to pollute .. but in comparison, I've had a 1973 CoupeDeVille and only got 8 MPG out of it (engine was 472 cu inch, which is about 7.8L I think) :-)

Interesting comments about the regular vs midrange octane.
The only advantage to higher octane would be if the engine pinged on regular, and the knock sensor reduced the ignition timing to stop the ping.
In this case, the midrange would give more power and more MPG, definitely worth it.
Some cars (like my buddy's Honda Odyssey) actually state in the manual that premium is recommended, but regular can be run with no ill effects other than some power loss and MPG loss due to the automatically retarded timing.
The Caddy recommends regular, so I assumed it could use it without going into ignition retard - but maybe not. Hot summer would be the best test to compare, that's when the engine would tend to ping, and the timing retard would kick in the most.
I think I'll hook up my scan tool and check for timing retard. I'll let you guys know what I see. Might be 10 horsies, & a bit of MPG as stated above, in there if we used higher octane.

DG

Sorry, in my original post I meant I am comparing 87-octane vs. 89-octane.