FastTags

Drove my Alexi for 3 hours. Great ride, smooth and Mpg improved from 17.5 to 21mpg.

My wife doesnt want to drive her accord any longer :-(

jj14

3 hours - from Dallas perhaps? I've driven my GS twice from Dallas to Austin - very nice drive (just had to watch out for the cops on the way - from what I've heard, they are happy to hand out tickets for even 5-10 mph over the limit.

On a related note, did you actually mean 21mpg?? Or 31mpg? My average fuel consumption for the drive ended up at about 30.5mpg to Austin, and about 31mpg back to Dallas (I didn't drive in Austin city - used the train instead)

sick21

Poor lady has to drive an accord?? Looks like she got the shaft Yeah I'd like to see 29 mpg on the highway like the window sticker say but I don't think that's ever going to happen.

FastTags

21mpg. From Houston to Austin and back to Houston

jj14

Assuming clear roads, I've always hit between 28 and 32mpg on these long drives (Dallas to Kansas or to Austin or to San Antonio). I usually use cruise control set to about 70.
In city, I get about 19-20mpg (stop and go), and in mixed City/Hwy driving (70%/30%), I get about 22-23mpg.

I have the non-FSport 2013 GS.
Strange to see such huge variations between different cars (same model). Guess driving style and fuel quality really make a significant difference.

Afrosheen

Must be a brand new car. Mine took a few months to settle into 19mpg city and 25+ highway.

AL13NV8D3R

I think mpg fluctuations has something to do with wheel and tire size. I get 23mpg avg city and highway. When I do 100% highway I get about 28mpg. In city only I get about 20mpg. I will be upgrading my wheels from stock 18" luxury wheels to wider 19" aftermaket wheels and will report back to see if wheels will kill my mpg.

damtachoa

Interesting idea!

jkeller

After Thanksgiving I'm taking a road trip from Texas to Vegas, we'll see what MPG we get. With my 07ES(same 3.5 engine) I got 28MPG with 2 people and luggage going 75-80mph.

sick21

First week of December I'm going from NM to Vegas

obturator

If you keep your rolling diameter the same, your mpg should remain the same. Now if your wheel and tire combo is heavier than stock, then your mpg will suffer. Correct me if I'm wrong.

Afrosheen

No, you're right. If overall diameter stays the same (which it always should), nothing is impacted when it comes to mileage. Trust me, if you oversized the wheels and tires, you'd know it, starting with the speedometer. Heavier wheels/tires, aka unsprung mass, only really makes an impact when it comes to track days. A heavier wheel acts as a flywheel, harder to get going and harder to stop at speed, but carries more rotational momentum at high speeds so requires slightly less energy (fractional really) to maintain high speeds.

Racing wheels, for many reasons, are designed to be as strong and light as possible. Easier to stop, easier to get moving from low speeds in turns. Loss of rotational momentum isn't a big deal in a track setup. See Ray's Gram Lights for a successful, long lasting formula.

jkeller

Well don't bother going to The Mirage, I plan on winning all of their money. HA

1111GS

If you're going to Vegas, why worry about the mpg? If I can afford a trip, mpg is prob the last thing on my mind. Sounds like a great trip. Have a good time. Don't forget to stop and take pictures of your GS in the middle of nowhere.

sick21

I had to cancel my trip this morning Got a new job so I won't be able to take off.

I was really looking forward to taking the GS..