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View Full Version : What Type of Gasoline is Needed for the non-Abarth 500?



LoungeLizard
09-25-2012, 10:29 AM
Does Fiat require or recommend premium gas, or is regular good for this car? I LOVE the style of the 500, but I like that my current car is bigger and gets equivalent/better mileage using regular gas.

Mayast1
09-25-2012, 02:04 PM
I use regular in my loung. I ran premium at first, but after I tried regular and didn't see an increase in performance, I went back to regular.

Bisbonian
09-25-2012, 04:58 PM
According to the manual premium is recommended but the minimum octane requirement is 87.

I've been using 87 octane unleaded with no ill effects.

500ways
09-25-2012, 08:06 PM
Forget the EPA ratings. You will get more MPGs than the EPA numbers show. Browse around in this forum and you will see what others are experiencing. Most of my use is 60% hwy and 40% city. I am averaging 39 - 41 miles per gallon on regular gas with a 5-speed manual. My style ebbs and flows between spirited and speed limit. Cheers!

Fiat500USA
09-26-2012, 01:32 AM
According to a Fiat engineer, using regular does not effect fuel efficiency. It will effect outright power output, but most people will never notice. 500ways is right, it is easy to exceed the mpg figures with this car just by driving conscientiously.

LoungeLizard
09-26-2012, 08:45 AM
Cool! Good to know - I usually try to (my version of) hyper-mile anyway... You know, upshift early, coast as much as possible downhill or coming up to traffic lights or congestion, etc.

SeaDawg
09-26-2012, 10:59 AM
Cool! Good to know - I usually try to (my version of) hyper-mile anyway... You know, upshift early, coast as much as possible downhill or coming up to traffic lights or congestion, etc.

Just remember to leave the transmission in gear and the clutch still engaged when 'coasting'. The fuel management system essentialy shuts off fuel to the engine during those times. If you leave it in neutral it has to continue to feed fuel to the engine to keep it running. Or so I have been told/seen here in the forums.

Pinecone
09-26-2012, 11:50 AM
You need to do testing with your car and your driving. Some people report better gas mileage with premium, enough higher to offset the higher price. Some do not.

NGEN
09-30-2012, 05:43 PM
Ya I drive it in sport mode all the time with premium but I feel I still get pretty good mileage. To each his/her own

panther76
10-01-2012, 07:06 AM
Cool! Good to know - I usually try to (my version of) hyper-mile anyway... You know, upshift early, coast as much as possible downhill or coming up to traffic lights or congestion, etc.

that is about the extent of what im willing to do as far as approaching light/stop signs. i will coast in gear when possible and usually shift at or before 3k rpm's. nothing like what most hypermilers do. i dont usually use premium and still have a lifetime average of over 44 mpg's.

Durockrolly
10-03-2012, 04:13 AM
Does Fiat require or recommend premium gas, or is regular good for this car? I LOVE the style of the 500, but I like that my current car is bigger and gets equivalent/better mileage using regular gas.

Our little 1.4 liter engines have a pretty high compression ratio @ 10.8:1. The octane of gas determines at what level of compression the gas will ignite. The lower the octane the less amount of compression it takes to ignite. If you are using low octane gas (which 87 oct is low for the CR of our cars) your engine may fire do to compression instead of spark, known as pre detonation. This is not something you want it to do. It will, in time, do damage to the engine.

Pinecone
10-04-2012, 11:34 PM
Our little 1.4 liter engines have a pretty high compression ratio @ 10.8:1. The octane of gas determines at what level of compression the gas will ignite. The lower the octane the less amount of compression it takes to ignite. If you are using low octane gas (which 87 oct is low for the CR of our cars) your engine may fire do to compression instead of spark, known as pre detonation. This is not something you want it to do. It will, in time, do damage to the engine.

No, that is not it. You are right that higher compression requires higher octane.

But the higher octane deals with issues AFTER the spark fires. Not before. Detonation occurs after the spark, when the octane is too low for the conditions in the cylinder.

Durockrolly
10-06-2012, 01:44 AM
No, that is not it. You are right that higher compression requires higher octane.

But the higher octane deals with issues AFTER the spark fires. Not before. Detonation occurs after the spark, when the octane is too low for the conditions in the cylinder.

You are correct sir. I mistakenly used the term "pre detonation" instead of pre ignition.
If you replace pre detonation with pre ignition I will then stand by my statement.

ahh-bert
10-07-2012, 01:46 AM
Does gas vary by state? My dad was saying to me the other day that he gets WAY better mileage in his Prius with Oregon gas than with "watered down California crap gas". HUH? There's a difference in gas from one state to another? I have always used 91 octane in all my cars. I really don't know why I do it in my Mercedes - maybe just habit? But I SWEAR that it made a HUGE difference in the Honda I had. If I used the good stuff she was really zippy, if someone put in the low octane stuff she was an absolute slug. I could really, really feel the difference.

SeaDawg
10-07-2012, 03:09 AM
Does gas vary by state? My dad was saying to me the other day that he gets WAY better mileage in his Prius with Oregon gas than with "watered down California crap gas". HUH? There's a difference in gas from one state to another? I have always used 91 octane in all my cars. I really don't know why I do it in my Mercedes - maybe just habit? But I SWEAR that it made a HUGE difference in the Honda I had. If I used the good stuff she was really zippy, if someone put in the low octane stuff she was an absolute slug. I could really, really feel the difference.

Yes, California with its air quality problems mandated specific gasoline formulations to be required for sale in California. Therefore, the chemical composition (additives) of gas sold in California IS different than that sold in other states.

It's also why your gas is so expensive right now as the only refineries that make that 'special blend' are actually located IN California and apparently two of them were down recently and one is still partially disabled due to a fire.

Berliner
10-07-2012, 05:51 AM
I use Agip all the Time with the Sport Button in active Mode. LOL Since i am off this Weekend i gonna try 102 Octane. Yes we are a Redneck Hood. We still working on getting the Motor back where it belongs.


http://www.team500av.com/galleria/Soci/Ceola.jpg



In the Rear.

panther76
10-07-2012, 09:49 AM
Does gas vary by state? My dad was saying to me the other day that he gets WAY better mileage in his Prius with Oregon gas than with "watered down California crap gas". HUH? There's a difference in gas from one state to another? I have always used 91 octane in all my cars. I really don't know why I do it in my Mercedes - maybe just habit? But I SWEAR that it made a HUGE difference in the Honda I had. If I used the good stuff she was really zippy, if someone put in the low octane stuff she was an absolute slug. I could really, really feel the difference.

maybe he is getting ethanol free gas. while california has virtually zero stations that sell pure gas, Oregon has more than most states. he is most certainly going to get noticeably better mileage with ethanol free gas.....the few times ive been able to use it, ive seen an 8-10% increase in mpg's.

check this out

http://pure-gas.org/index.jsp?stateprov=OR