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gas milage between 2.0 and 3.8

34K views 77 replies 58 participants last post by  charlie57 
#1 ·
as of now I have a deposit for a track 2.0 and wanted to know is there a big difference between the v6 and 4s gas milage...i have to drive 35 highway miles to work and 35 miles back 5 days a week so it plays a big factor on choosing wich engine
 
#4 ·
I get around 25mpg average with my V6 380 GT and I do little bit of highway little bit of city.
 
#5 · (Edited)
I get 23-24 mpg mixed in my 2.0. I use cruise control when I can. I do mostly suburban driving. Cruise around 50 and stop every couple miles or so and repeat toss in a few miles of highway driving and about 30 mins of bumper to bumper stop and go traffic every morning (when i'm in stop and go the average BOMBS. it goes from 24 down to 20 in about 5 minutes tops. it climbs back up when i drive it home in the evening and the traffic isn't so bad) and that's how i get the 23-24. My 94 camry got the same mileage...and it had 215k miles on it. Maybe a new air filter (cp-e's looks SOOO nice!) and a PA tune will really improve it....just wish i had the money.
 
#7 ·
Mine was like that in the beginning, it slowly gets better. I run 87 octane 90% of the time. I'm amazed that my car gets better gas mileage then my Mom's 2008 Honda CR-V 4cyl. :rofl:
 
#8 ·
ok, sorry to play devil's advocate, but who gets a sports car and worries about MPG?? if you're worried about 70mi a day get a Civic or a Prius.
 
#11 ·
I checked that seriously one time.

On 400Km, at 105Km/h (average), the indicator in car told me an average of 8,1l/100Km (29MPG)

The car has 4000Km.

I own a 2.0T GT.
 
#13 ·
I average 18 in the city and 25 on the highway, without a heavy foot.
 
#16 ·
I have been getting about 24-25ish with 50/50 driving with my 2.0T A/T . But most of the time I've had the windows down or A/C on so it could go up a bit.

mileage was on my mind shopping for this car -- not top priority -- but I didn't want a guzzler either.

- dcc
 
#18 ·
MPG varies for everyone.

depends on how you accelerate and how to handles on the highway, how often do you press the brake vs avoiding to brake.

canadian estimation of the 2L is 6.6L/100Km, works out to be 34mpg, but I don't think anyone on this site reported such value, you would most likely need to cruise at 50miles/hour on the 6th gear. V6 will burn more fuel since you have 100kg extra to accelerate everytime you do so, bigger engine = more friction etc...

tooooo many factor that I won't bore you with, but you will get people reporting contradictory values for this thread since no one drive with the same manner.

You have to compare with a same standard, and I don't think the same person has both 3.8 and 2L at the same time to give you that feed back.
 
#20 ·
The Canadian factory ratings are also in Imperial gallons. When comparing with Americans, you have to use US gallons since most of the south-of-the-border people refuse to believe there are any other gallons ;) :rofl:


The fact of the matter is that the 3.8 gets better real world mileage.
The numbers on the window don't matter nearly as much as the average MPG rating that most of the owners are getting.
 
#23 ·
ok, i'm done playing devil's advocate... mpg was also a consideration for me, in fact it was the biggest consideration to begin with which is why i was about to get an 09 Civic EX. but after the totally uninspired test drive (i knew what to expect, had a Civic before, but was still in denial about it lol) my heart settled on the Genesis cause it combined decent mileage with way better performance.

my first 3 tanks of gas weren't awe inspiring... about 20-21mpg combined, with 75% highway driving. now i am up to about 23-24mpg combined. it's impossible to drive this car like a boring econo-commuter, but i'll take 23mpg combined in trade for a killer ride.
 
#24 ·
So far, on our 3.8 ,161 miles at 22.3 mpg. 63 was highway the rest city.

Looks promising. Will know better this weekend, have a 600 - 700 mile round trip to do.

Will report back on that.
 
#27 ·
uummm.... yeah.... the 2.0T gets better gas mileage...
 
#29 ·
The only way to truely figure out your mileage is to run 2 or 3 tanks of fuel in all driving conditions. I average 320 miles on a tank in my 3.8 auto. (roughly 600km)

The mileage is good for what the car is, however if it was worse I wouldnt be happy. Once I start making more power Ill accept lower economy, gotta make some sacrifices for the extra jam.
 
#30 ·
I am not sure why all the folks with 2.0 are getting bad mileage. I drive 50 miles each way to work and home and am getting 27-29 mpg. When on the interstate drive about 80 mph. The car has 4000 miles on it right now and use 87 oct gas.
 
#31 ·
Hi everyone about the Genesis Coupe i get any where 16mpg to 36mpg. The best i got my best 36mpg with my 3.8 base by going 55mph with cruse control that on highway, but my best city was 26mpg. My worst mpg on highway was 24mpg and city worst mpg was 16mpg because i was flooring it lol just outside city limit that end there speed limit which go for 5 mile until i get into city limit again.

:rofl:
 
#35 ·
Went on the trip as previously reported and believe I had outstanding results.

First 185 miles on the GC: 24 MPG

Running the posted speed limits on the first leg of the trip: 32.5 MPG

Running 5-7 MPH over posted speeds on the return leg: 29.1 MPG
 
#39 ·
I get 22-23 average with a fairly heavy foot in suburban midwest. I got 25-26 average in my four-banger Cavalier that I did not drive nearly as aggressively.

My highway trip "home" the Cavi got 30 mpg with the A/C on and the 3.8 gets 31.2 with the Climate Control on, for the same 280 mile drive.
 
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