Gas Grade & Mileage?

General chat about the car goes in here.
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Frog2Spider
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Posts: 387
Joined: Thu Jun 19, 2014 6:48 pm
Your car is a: 1981 2000 Spider
Location: Vancouver, Washington

Gas Grade & Mileage?

Post by Frog2Spider »

I use a medium grade ( 91 Octane ) gas and get 27 MPG in my fuel injected 2000.

How does that compare to yours?
Always looking for curves under blue skies!
Frog2Spider

'81 - 2000 Spider
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AriK
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Posts: 1148
Joined: Sat Apr 02, 2011 7:58 pm
Your car is a: 1979 Fiat Spider
Location: Montreal Canada

Re: Gas Grade & Mileage?

Post by AriK »

93 octane no ethanol, 200 km/tank (125miles) avg city/highway 50/50. 79 carbed.
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vandor
Posts: 3996
Joined: Sat May 23, 2009 1:23 pm
Your car is a: 1971 124 Spider
Location: Texas, USA

Re: Gas Grade & Mileage?

Post by vandor »

Only 200 km on a tank? I usually fill up after 200 miles (320km). Get 23-29 mpg, depends on driving. I have to use premium gas (93 octane R+M here in TX) due to higher compression.
I once experimented on my Volvo to see if it would get better mileage on premium gas. It did, but not enough to justify the extra cost.
Csaba
'71 124 Spider, much modified
'17 124 Abarth, silver
http://italiancarclub.com/csaba/
Co-owner of the best dang Fiat parts place in town
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AriK
Patron 2018
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Posts: 1148
Joined: Sat Apr 02, 2011 7:58 pm
Your car is a: 1979 Fiat Spider
Location: Montreal Canada

Re: Gas Grade & Mileage?

Post by AriK »

vandor wrote:Only 200 km on a tank? I usually fill up after 200 miles (320km). Get 23-29 mpg, depends on driving. I have to use premium gas (93 octane R+M here in TX) due to higher compression.
I once experimented on my Volvo to see if it would get better mileage on premium gas. It did, but not enough to justify the extra cost.
79 ADHA, enough said.
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RRoller123
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Posts: 8179
Joined: Sun Nov 13, 2011 2:04 pm
Your car is a: 1980 FI SPIDER 2000
Location: SAGAMORE BEACH, MA USA

Re: Gas Grade & Mileage?

Post by RRoller123 »

Mid-Range gas, ~24 MPG, 1980 Spider FI.
'80 FI Spider 2000
'74 and '79 X1/9 (past)
'75 BMW R75/6
2011 Chevy Malibu (daily driver)
2010 Chevy Silverado 2500HD Ext Cab 4WD/STD BED
2002 Edgewater 175CC 80HP 4-Stroke Yamaha
2003 Jaguar XK8
2003 Jaguar XKR
2021 Jayco 22RB
2019 Bianchi Torino Bicycle
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spidernut
Posts: 1906
Joined: Wed Jan 25, 2006 12:20 am
Your car is a: 1979 Fiat Spider Automatic
Location: Lincoln, CA

Re: Gas Grade & Mileage?

Post by spidernut »

Bone stock 79 with automatic and ADHA - 23 freeway only, 19 combined regardless of how I drive. I got 27 in my 80 EFI.
John G.
1979 Spider (Owned since 2000)
1971 124 Sport Spider (Owned since 2017)
1977 Spider (Sold 2017)
1979 Spider (Disposed of in 2017)
1979 Spider (Sold 2015)
1980 Spider (Sold in 2013)
1981 Spider (Sold in 1985)
2017 Spider (Owned since 2019)
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redcars
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Posts: 487
Joined: Sat Jul 31, 2010 9:36 pm
Your car is a: 1981 Spider 2000
Location: Collinsville, IL

Re: Gas Grade & Mileage?

Post by redcars »

82 stock 87 octane 27 normal driving. 21 at 90mph 32at 50 mph.
1987 Lotus Super 7 clone
1981 Fiat Spider 2000 AT
1982 Fiat Spider 2000 5sd
1970 Fiat Coupe
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DieselSpider
Posts: 2130
Joined: Wed Dec 24, 2014 10:21 pm
Your car is a: 1978 124 Spider with Isuzu Turbo Diesel

Re: Gas Grade & Mileage?

Post by DieselSpider »

Low Sulphur Diesel and get 38 (city) to 50 (hgwy) mpg depending on how hard I push the 1.8L Turbo Diesel.
Last edited by DieselSpider on Fri Jul 03, 2015 10:08 pm, edited 1 time in total.
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DocGraphics
Posts: 639
Joined: Sat Mar 19, 2011 6:43 pm
Your car is a: 1978 124 spider
Location: Coeur d'Alene Idaho

Re: Gas Grade & Mileage?

Post by DocGraphics »

32/36 DFEV upgrade, factory '74 4-2-1 header & factory '81 electronic ignition upgrade on my 1978 1.8, runs & drives great! I'm only getting about 16 MPG around town with the best of 24 on the highway all on 87 pump gas.
I would probably get a little better around town if I didn't drive her like I stole her.
Don Raugust
1978 Fiat 124 Spider "Fiona" - Burgundy/Tan
2011 pics: http://s918.photobucket.com/albums/ad22 ... 0Pictures/
2012 pics: http://s918.photobucket.com/albums/ad22 ... cs%202012/
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Redline
Posts: 631
Joined: Sat Aug 29, 2009 4:34 pm
Your car is a: formerly a 1971 Fiat 124 BC Coupe
Location: Switzerland

Re: Gas Grade & Mileage?

Post by Redline »

My '71 Coupe with twin IDF40s on a European 1608 varies between 25 - 35 USmpg, depending on how well it is running and how I drive it :D . Lately, it's about 30, it's running well, and I'm standing on it everywhere. I was getting 35 in the summer a few years ago when I was doing a lot of easy-cruising commuting between Bern and Zurich.
http://www.124bc.com
La Dolce Vita: Joy and frustration at the speed of smoke
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hayesbd
Posts: 171
Joined: Fri Mar 01, 2013 10:20 pm
Your car is a: 1973 Spider
Location: Newark, Ohio, USA

Re: Gas Grade & Mileage?

Post by hayesbd »

My bone stock 73 with a 1592 gets around 25mpg around town and 30-32 on the highway. I use regular 87 octane fuel.

Brian
Current: 1973 124 Spider
Previous: 1961 600D, 1970 850 Racer, 1973 124 Special, 1974 124 Special TC
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