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onetuza
09-03-2015, 09:34 AM
I leased a 2015 Fiat 500 Sport with 6 speed auto transmission.
Here are my average milage calc's so far:


87 octane - 32.86 mpg
89 octane - 34.15 mpg
93 octane - 36.34 mpg
90 octane ethanol free - to be determined soon.

I should add that I always use cruise control.

Klasse Act
09-03-2015, 10:04 AM
That's great mileage, especially since the car is so new and temps are surely very warm down there. I met a guy at a carshow years ago and he told me about the advantages of using premium in a car designed to run on 87. He told me the ECU pulls less timing and gives the car a bit more torque, thus moving it down the road a bit easier. Now I'm no engineer and don't even play one on the radio but my Fit and CR-Z, cars I had before the Abarth, got better mileage than advertised. If you go to Fuelly and check out my car BACKFIRE (have to name the car over there) and look at my retired cars (JAWS, my 2011 CR-Z) you'll see the mileage I got with that car. Best mpg with the CR-Z was 44.3 mpg, all freeway.

Enjoy your car!

Allen 500
09-03-2015, 11:37 AM
I also have a new 500L plus 500 Sport. With 87 my best has been 27mpg, may switch to see results.

CoachRick
09-03-2015, 12:03 PM
Our one-month old elle has 1800 miles and is basically 'stuck' on 25mpg average. Temp has been in the high 90s/low 100s since we got the car, so the AC has been crankin' ! I reckon the highway mileage will be closer to 30; but Austin traffic has its quirks(read: lots of construction and pockets of gridlock). Can't tell a difference among all 87(couple of tanks), all 93(mostly) and a mix of the two. With the price difference between 87 and 93 around here being a solid FORTY cents a gallon(as high as SIXTY cents), I'm going to ease into 87 for a few tanks unless I see some significant change in performance/mileage.

Have had the same long discussion on Volvo and Acura forums regarding the "recommended" and "required" octanes for about 7 vehicles(all but one were turbo). At the rate we are piling up miles, we are looking at more than $700/year difference in fuel costs...nothing to sneeze at.

I make sure to use Top Tier fuels, typically Shell, Chevron, Exxon, Costco and would step up the octane for any trips fully loaded or in mountainous terrain. Otherwise, I reckon we will switch fully to 87 for the next month or so.

Maricopaman
09-03-2015, 07:01 PM
I leased a 2015 Fiat 500 Sport with 6 speed auto transmission.
Here are my average milage calc's so far:


87 octane - 32.86 mpg
89 octane - 34.15 mpg
93 octane - 36.34 mpg
90 octane ethanol free - to be determined soon.


Jeez, sure don't want to be following you! I have a 2015 Sport and live 15 miles from town so over half of my mileage is road driving. I have used premium from day one, overall in 2653 miles I am averaging 29.3 mpg from day one, usual readings between fill-ups are in the 27-29 mpg range, doesn't seem to matter whether I let it shift itself or, as I normally drive now, in sport mode and manually shifting. What I will say though is that my foot is always down to the floor boards when not on the highway. ;>)

Gharbeson
09-03-2015, 07:10 PM
Jeez, sure don't want to be following you! I have a 2015 Sport and live 15 miles from town so over half of my mileage is road driving. I have used premium from day one, overall in 2653 miles I am averaging 29.3 mpg from day one, usual readings between fill-ups are in the 27-29 mpg range, doesn't seem to matter whether I let it shift itself or, as I normally drive now, in sport mode and manually shifting. What I will say though is that my foot is always down to the floor boards when not on the highway. ;>)
I get around 7mpg around the track on 99 octane

Maricopaman
09-03-2015, 07:25 PM
I get around 7mpg around the track on 99 octane
Well I would say I would follow you but it's more likely that you would be lapping me over and over! ;>)

BlueCorn
09-04-2015, 09:31 AM
I get 35mpg on a regular basis, Granted it's almost all freeway driving at 85mph....

Fiat500USA
09-05-2015, 08:03 AM
I've been averaging 34 mpg in my Abarth during my sem- rural 15 mile commute with about 12 stop signs/lights. I rarely go on the highway, but I when I do I'm probably around 38 mpg.

http://badges.fuelly.com/images/sig-us/327661.png (http://www.fuelly.com/car/abarth/500/2012/fiat500usa/327661)

ewflyer
09-05-2015, 10:20 AM
My 2012 Abarth gives very similar mileage, about 33mpg average. My normal routes are probably 60% highway.

On long distance trips my Abarth delivers 41.5mpg if I stay out of the boost, which means driving 65mph.

I know, I know... who drives 65mph? Well, believe it or not, out in rural eastern Washington and northeastern Oregon a lot of people do just that. We all just settle into the right lane and relax.

Maricopaman
09-05-2015, 01:03 PM
Yes, the stick shift Abarths get better gas mileage than my auto Sport, really pisses me off! LOL

Klasse Act
09-05-2015, 04:16 PM
When I got 41 mpg in my Abarth last year I had the following mods:

-500 Madness piggyback, set to setting #7
-Euro Compulsion R3T SRI
-MPx axle-back.

When I go this year I have since added:

-MPx ported TB
-500 Madness lightened crank pulley
-ATM FMIC
-tuning box turned up to setting #8
-215/40/17's and Nue-F 17 x 7.5" wheels

Now when I head out on a trip I just set the cruize to 5 mph over the posted speed limit, get in the right lane and only pass when I need to, that's it. The mods shouldn't hurt the mileage and infact should help since I've got an increase in torque, so the engine is working easier and makes power sooner down low. I predict atleast 1 mpg better but we'll see as there's other factors at work here, like temps and elevation, not to mention traffic.

Coldsnap
09-05-2015, 04:52 PM
Really? I was planning to get the Madness Power Pack for my 500T (Go Pedal + ECU) but was worried it would destroy my already poor MPG.

Trunkout
09-05-2015, 05:06 PM
More power means more gas. Amazing!

ERM Racing
09-15-2015, 01:00 PM
We've been getting 39-41mpg with our 2015 Sport, 5 speed. Our 16 mile round trip daily commute is all country roads with a downhill run in the morning (1500ft to 600ft in 2 miles) and back up the hill in the evening. Obviously this depends on how much I boot it going back up the hill. We've been feeding it 91/93 octane since birth and we just passed the 5000 mile mark. We did see 42mpg average on a highway trip a few weeks ago.

Dave