How many miles are you getting per tank and what MPG?

[Mrbadwrench]

You guys are getting awesome mileage. I'm getting 28 highway at 65 and 31 highway at 55 with the cruise and eco mode on. Non-si tuned with phearable. Usually around 23-25 average.

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[Mrbadwrench]

@Drake you must not be tuned or modified if you're getting over 40

 

[Arch]

First full refuel just done, not really been anywhere except going out in it for the sake of driving it once a week or so during Covid lockdown. Returned 28.5 mp(UK)g over 251 miles since last fill up.

FK2 averaged 31.0 over 2.5 years, the FD2 was 32.0, week in, week out for 6 years, no matter how i drove it.

 

[arpypat]

@Drake you must not be tuned or modified if you're getting over 40

I can also get 40+ hwy being tuned and modded! I average ~43ish on road trips

What year civic: 2019 Civic Si

Average MPG: 35-37 mpg (summer) 33-35 (winter)

Mostly highway/city/mixed: 75/25 hwy/city

Which octane gas do you use: 93 BP

Engine Modifications: Phearable 1.5R, 27won CAI, 27won TIP, Mishi FMIC w/pipes, CTR SMF

Driving Habit: Mostly tame. Aggresive on highway on ramps

 

[Mrbadwrench]

I can also get 40+ hwy being tuned and modded! I average ~43ish on road trips

What year civic: 2019 Civic Si

Average MPG: 35-37 mpg (summer) 33-35 (winter)

Mostly highway/city/mixed: 75/25 hwy/city

Which octane gas do you use: 93 BP

Engine Modifications: Phearable 1.5R, 27won CAI, 27won TIP, Mishi FMIC w/pipes, CTR SMF

Driving Habit: Mostly tame. Aggresive on highway on ramps

You're lucky. I really feathered it with eco mode and cruise control with phearable and cobra intake and prl intercooler and I can't get above 33mpg pure highway

 

[arpypat]

You're lucky. I really feathered it with eco mode and cruise control with phearable and cobra intake and prl intercooler and I can't get above 33mpg pure highway

So many factors determine your fuel efficiency beyond just driving style. Ambient conditions, elevation, fuel quality... List goes on!

With that being said 33mpg highway should be totally achievable on a non-Si 1.5T. Regardless if you have 6mt or CVT. You can try to clean your cobra intake filter and check tire pressures. I think a boost leak could also affect your fuel efficiency. Could check for that too since you swapped out your FMIC.

 

[Drake]

@Drake you must not be tuned or modified if you're getting over 40

I wasn't when I made that post

 

[skottharrison]

What year civic: 2020 Civic Si Sedan

Average MPG: 37+ mpg per tank (~420 miles), I've gotten over 41 mpg certain trips if traffic is just right.

Mostly highway/city/mixed: Mostly highway (Not expressway). Florida flat roads.

Which octane gas do you use: 93

Engine Modifications: Phearable 1.5 tune

Driving Habit: 22 mile commute down a 55mph 2 lane highway. Kid's school drop-off loop chops 2mpg off my trip.

Car is perfect for my commute, just enough power to pass traffic, just enough MPG to avoid any guilt. Only complaint is paint & glass is super soft, I can chip the paint if I stare long and hard enough.

 

[04sthemi]

What year civic: 2020 Civic Si

Average MPG: 32-33 mpg

Mostly highway/city/mixed: Mixed

Which octane gas do you use: 93

Engine Modifications: stock

Driving Habit: usual easy going but my fair share of spirited driving. Would like to pull 400 miles to a tank one day lol.

 

[JDM importz]

What year civic: 2019 Si

Average MPG: 34 mpg

Mostly highway/city/mixed: 80% city (45mph in 6th gear is our cars sweet spot at like 50 mpg)

Which octane gas do you use: 93

Modifications: Prl race cai, Megan catless downpipe, depo intercooler/piping, tsp stage 1 tune

Driving Habit: Rip on it up to speed and then mostly just hoping I catch a red light

How do u like the Megan castless down pipe? Was it easy to install? Good sound? Any thoughts after your install?

 

[lhughes21]

What year civic: 2019 Civic Si Sedan

Average MPG: 27-30 mpg

Mostly highway/city/mixed: Highway, backroads (rural Ohio)

Which octane gas do you use: 93

Engine Modifications: None (afraid of screwing something up)

Driving Habit: Heavy foot most of the time

 

[lhughes21]

What year civic: 2017 Civic SI Coupe

Average MPG: 36-44 mpg, Drive to work is between 40-44mpg(big hill on the way to work), drive home is between 36-41mpg. 10k mile average is around 37-39mpg

Mostly highway/city/mixed: Highway(65-72mph)/Suburbs(35-60mph)

Which octane gas do you use: 92-93

Engine Modifications: Borla Exhaust

Driving Habit: Coast to stops in neutral, shift between 2400-2800RPMs, spirited driving often. Even with a day of AutoX, I get 35mpg for a tank.

Why coast in neutral? If you coast in gear it won't have to use any gas. I could very well be wrong on this though.

 

[lhughes21]

I can chip the paint if I stare long and hard enough.

?? Can't say I've noticed on mine, even in Ohio I haven't had an issue. That or I'm losing my eye for things like that

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