Fuel Economy Discussion (Page 1/3) statue4 MAR 12, 12:10 AM What kind of gas mileage do you get? For me it is about 25mpg, with about 80% of my driving on the highway. Engine: 2.8L, no mods - just stock Trans: Getrag 5-speed To be completely honest I expected better from a tiny, lightweight car with a little engine. I don't drive like a grandma, but also not very aggressively. Just out of curiosity, what are you guys getting and with what drivetrain? cvxjet MAR 12, 01:16 AM I was getting 22 city/ 28 highway with my 1985 SE V6 4 speed.(1985-1998)......In 1999 I installed an F-body 3.4 long-block under the stock 2.8 FI system and a Getrag 5 speed...also installed 86-88 GT rear quarters and an 87-88 base car nose...Now I get 20 city and 30 highway. I drive no more than 5 mph over the highway limits and yet I drift the car through most turns (If noone is around)...Also, I always look ahead and if I'm approaching a red light I cut the throttle early. cam-a-lot MAR 12, 06:09 AM The Fiero is not really a lghtweight car, and keep in mind that the engines are ancient technology, pushrod, iron block and heads.. so gas mileage won't be great I actually get better gas mileage with my 3800 SC motor than I ever did with the 2.8- not sure why Australian MAR 12, 07:13 AM I was thinking about back to the future and Delorean and Mr Fusion and how it is real. Fill plastic waste into pyrolysis reactor heat to 100℃ to 250℃ use the carbon biproduct process into fuel oil by distillation plant. Add hydrogen and it is all free. If you have a garbage tip worth of rubbish around. css9450 MAR 12, 07:48 AM quote Originally posted by cam-a-lot: The Fiero is not really a lghtweight car, and keep in mind that the engines are ancient technology, pushrod, iron block and heads.. so gas mileage won't be great I agree.... The later versions of the small V6 got better mileage. The Gen II and especially the Gen III engines with SFI get surprisingly good mileage. fierofool MAR 12, 07:55 AM I have a 3.4 Getrag fastback. Locally, I get about 18 mpg, but on a long road trip running cruise control, I've hit 33. Some of my fill-ups show I'm making about 21 mpg if I'm making trips that include 4-lane highways. I live in a very small county that's not more than 20 miles wide in any direction, so there aren't but a few miles of 4-lane in the county. All surfaace roads. Awalker W02 MAR 12, 08:22 AM I have an 07 3.9 lz9 and on the way to the 35th strictly highway driving I was getting 34-36 mpg. hnthomps MAR 12, 09:41 AM I have a turbo push rod 3.4 and two 3800 SC (II and III) engines in cars and I get around 26 mpg on average when running the A/C. All are coupled to Getrag 282 transmissions and I use high test fuel. Nelson fieroguru MAR 12, 10:47 AM The Fiero 2.8 should break into the low 30s on the interstate with the 5 speed. Tire pressure, alignment, engine condition and state of tune will all impact fuel economy. skywurz MAR 12, 11:50 AM my Duke gets 30-35 ive gotten up-to 40 with it before.