MPG trends

[hsvInsight]

Hi All,

After 3 fill-ups the story so far is:

1st 44.4 MPG
2nd 45.5
3rd 46.8

total:
1193 miles, 45.6 MPG
The car thought the third trip was 48.1, so it was off by just 1.3 MPG.

Driving with the A/C seems to cut the MPG by at least 4 to 5. On drives when I don't cross the ridge on the way to work, I get more like 55+ MPG.

Still very happy!

Terry.

[godofthunder]

Originally Posted by hsvInsight

Driving with the A/C seems to cut the MPG by at least 4 to 5.

Wow. Really?
I haven't been able to test with constant 90+ Degree days since I got the car. In this climate, I won't ever be able to run much without AC, but to know I could be getting that much better is a little encouraging.

[wstander]

Here is mine since April:

DATE MPG DISP MPG CALC MPG LIFE MILES MILES TO DATE
4/17/2009 took delivery 50.00
4/24/2009 39.9 39.9 252 302
4/30/2009 43.4 38.2 38.74538745 222.4 525
5/5/2009 44.5 43 40.3562341 262.3 793
5/7/2009 46.3 45.02380952 41.21593291 189.1 983
5/14/2009 45 40.27027027 40.992 298 1281
5/17/2009 43.1 40.93567251 40.98405717 210 1491
5/20/2009 43.7 38.55405405 43.55076018 285.3 1776
5/26/2009 44.1 45.83095374 43.88498242 321 2097
5/29/2009 46.3 44.0625 43.90412958 310.2 2407
6/2/2009 45.3 42.05705313 43.68776614 321.4 2729
6/6/2009 46 44.47407407 43.76155802 300.2 3029
6/9/2009 43.7 39.19047619 43.42126172 246.9 3279
6/11/2009 44.3 43.11894273 43.40382555 244.7 3524
6/12/2009 42.7 40.21276596 43.24463539 170.1 3694
6/16/2009 44.3 40.97708082 43.04724099 339.7 4034

[stevenvillatoro]

Originally Posted by godofthunder

I haven't been able to test with constant 90+ Degree days since I got the car. In this climate, I won't ever be able to run much without AC...

By cracking open the REAR windows while leaving the front windows closed, you'll find that you can get great air circulation without annoying drafts. This will increase your ability to enjoy more warm-weather days without AC.

[jraynor196]

Raynor2010Insight (Honda Insight) | Fuelly

I keep my mileage here as well as in a spreadsheet.

I've only recently begun to track fuel cost as well.

[green_leaves]

Hey that's a very cool site to track gas mileage, I may add myself sometime soon. Note that Prius' are getting 45 MPG on average, same as I2.

[arkjones]

I too use Fuelly. I try to add notes on what sort of driving the tank was for and also what the MID claimed the tank's MPG was.

I think it will be interesting to see how my MPG changes as the temps drop out of the 90/100's later in the year.

BatCar (Honda Insight) | Fuelly

[Cobb]

Ive noticed I get better fuel economy with evenly dispursed weight in the car for highway driving than empty. I had a passenger, 16 2 liter bottles of coke zero from sale at walmart, 25 20 ounces bottles of muscle mike from a clearance sale at big lots and 25 16 ounce bottles of special k protein water from big lots. I had a rollator in the rear and about 100 dollars in groceries. I got up to 54 on the screen for mpg. Empty the same trip the past few days I am now down to 51mpg and it keeps going down. I am going to seriously consider lowering my car with the new springs from tanabe as I saw the same behavior in my other car and lowering it gave the same fuel economy reguardless of load. I guess wind resistance is more than rolling resistance with the increased load?

[wstander]

Originally Posted by Cobb

I am going to seriously consider lowering my car with the new springs from tanabe as I saw the same behavior in my other car and lowering it gave the same fuel economy reguardless of load. I guess wind resistance is more than rolling resistance with the increased load?

Hmm, interesting

When the suspension was 'low', was the car level? or was the nose or tail down?

The undersides of these cars is pretty aerodymically 'dirty', so my suspicion is that lowering the front slightly would allow some smoothing of flow.....

[Cobb]

Yes, When I posted into the blue, I threw all my sodas in the truck area and it caused me to be in the blue down to 50mph on my routine trip. This time I put the lightest in the rear, the rollator and all the stuff in the floor area of the back seat and seat it self.

Nothing like getting zero calories cola for 58 cents a 2 liter bottle.