Mpg difference with exhaust?

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City
Harrodsburg
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KY
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2016 Ford fiesta s
#1
I'm just looking to see if anyone has confirmed mpg changes with exhaust, cai, filter, etc
 
OP
J
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5
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1
City
Harrodsburg
State
KY
Country
United States
What I Drive
2016 Ford fiesta s
Thread Starter #2
Also any other changes I can make that will make a noticeable difference in mpg?
 
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Grass Lake
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MI
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#3
Proper maintenance with a high quality synthetic oil. When it's time to replace the tires, check out the low rolling resistance types. They have been engineered for fuel economy.
Other things that make a incremental difference are careful throttle use, anticipate the traffic lights and avoid stop and go situations.
Make sure that you are not carrying anything that adds unnecessary weight.
I also have found that the basic Fiesta gets slightly better fuel economy on premium. Unfortunately, the improvement is mostly mitigated by the increased expense. But I thought it was an interesting experiment.
Most people don't have any appreciation for the economical simplicity of a small car. They will spend several thousand dollars more for a hybrid version of a vehicle that delivers a few more mpg. But, have no clue that they will have to drive that hybrid for a decade to just break even!
 
OP
J
Messages
5
Likes
1
City
Harrodsburg
State
KY
Country
United States
What I Drive
2016 Ford fiesta s
Thread Starter #4
Proper maintenance will be kept for sure like all my vehichles, that was hammered into my head as a kid in the garage. I will have to check out these low rolling resistance tires, any easy way to find them by like a commonly shared code or anything aside from looking up exactly that? Believe me, I had no desire to spend anything more than necessary on a gas saver, and I believe all that bs on hybrids is just so well off people can show off how environmental they are lol. I don't plan on doing anything to this car other than necessary, but if any worthwhile investment could be made in aftermarket parts to save me more money in the long run I wanted to know.
 
Messages
347
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56
City
Grass Lake
State
MI
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United States
#5
Proper maintenance will be kept for sure like all my vehichles, that was hammered into my head as a kid in the garage. I will have to check out these low rolling resistance tires, any easy way to find them by like a commonly shared code or anything aside from looking up exactly that? Believe me, I had no desire to spend anything more than necessary on a gas saver, and I believe all that bs on hybrids is just so well off people can show off how environmental they are lol. I don't plan on doing anything to this car other than necessary, but if any worthwhile investment could be made in aftermarket parts to save me more money in the long run I wanted to know.
 
Messages
347
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56
City
Grass Lake
State
MI
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United States
#6
I believe that Tirerack breaks out that type of tire on their website. You can certainly just reach out to them through their website and inquire about the current best deals.
I have driven on Goodyear Assurance fuel max and Michelin energy saver A/S tires. Also drove on some Bridgestone Ecopia LRR tires that I can't recall the full name for. The Michelin was the best riding one. The others were ok, but the low rolling resistance types have a pretty big variation in road noise, ride quality and grip. If you have a mostly urban commute, I'm not sure if you would have any benefit from these types. If mostly highway is your situation, the payoff could be significant. Even more so if you get a nice rebate for buying them.
 
Last edited:
OP
J
Messages
5
Likes
1
City
Harrodsburg
State
KY
Country
United States
What I Drive
2016 Ford fiesta s
Thread Starter #7
I believe that Tirerack breaks out that type of tire on their website. You can certainly just reach out to them through their website and inquire about the current best deals.
I have driven on Goodyear Assurance fuel max and Michelin energy saver A/S tires. Also drove on some Bridgestone Ecopia LRR tires that I can't recall the full name for. The Michelin was the best riding one. The others were ok, but the low rolling resistance types have a pretty big variation in road noise, ride quality and grip. If you have a mostly urban commute, I'm not sure if you would have any benefit from these types. If mostly highway is your situation, the payoff could be significant. Even more so if you get a nice rebate for buying them.
I did see they named 4 different ones and those were of them, the Michelin were second to cheapest ahead of the Goodyear so I was looking at the Michelin because I've not had good experience with Goodyear. My trip is at least 30mi of interstate so thats good to hear. I've tried looking up about stripping the car of anything unnecessary to reduce the weight but everyone is doing it for performance and not giving feedback for mpg increases.
 
Messages
347
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City
Grass Lake
State
MI
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United States
#8
You should view the effort to increase your fuel economy as a multi faceted task.
There is no one best way. But, there are many little things that sometimes combine to get you an exceptional outcome.
I put my 11 fiesta on a Dyno and did three pulls on the stock muffler system and three pulls on a Borla muffler welded into another stock cat back system minus the resonator.
It sounded really nice, but it lost torque as the engine revs went over 3,400. H.P. gain was around 4 or 5. I think the stock system is pretty damn good. But, we drive torque and we buy H.P. as the old saying goes.
Having owned my Fiesta for almost ten years, I realized long ago that I would have to get something different for third and maybe fourth gear ratios. The car is simply not geared properly for autocross or track event use. As an autocross car, it's a second gear car all the way on a tight course. Large courses and road race tracks cause it to run out of breath or grunt because of the wide gearing.
 

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