Why isn't the fuel economy better?

[Rayme]

Originally Posted by White Shadow

All depends how it's set up. A small twin-scroll turbo on the 2.0 or even a 1.6 could provide lots of low-end torque. The idea is to have nice low-rpm torque and still a decent amount of higher-rpm pull.

Is there such OEM engine already pushing more than 200 hp? Sounds like an expensive way to not make that much more power.

[Wes B.]

Originally Posted by ottopilot

Is there such OEM engine already pushing more than 200 hp? Sounds like an expensive way to not make that much more power.

Yes, there is such an engine: Ford's 2.0l Ecoboost (247hp @ 5,500 rpm and 270 ft/lbs of torque between 1,750-4,500 rpm).

[einzlr]

Originally Posted by whaap

That's an interesting question. My grandfather owned a gas station and I worked there every summer up to and including 1951 and I can honestly say the number of times I heard the topic being discussed I could have counted on the fingers of one hand.

I'll never forget a good laugh I had. My grand dad asked a friendly customer what kind of mileage he got and the guy responded: "I don't know, I've never run it out of gas"!!

That brings back memories of all the times my own father actually *did* run us out of gas on family trips and we coasted into the gas station. I don't recall ever having to get out and push, though. My dad has always been big on cutting it precariously close

[86'd]

From what I've heard I think the MPG is fine.

I figured that in my old 2002 Civic SI I was averaging 27mpg. I'd think the FR-S gets a little better (albeit with Premium) and makes 40 more HP.

So I'd say it's right where it's supposed to be.

My WRX on the other hand... Gets around 20mpg AVERAGE. lol. Then again it's turbo'ed, AWD and makes 65 more HP and almost 100 more TQ.

[RaceR]

einzlr, yeah I know my BMWs. Was several years in the BMW club and have owned two E36s in the past. Im especially familiar with the E30-E46s. Gotta love those cars.
Im hoping the 2-series will be awesome. Add a nice 3-cylinder (Would be great in my country. US guys will probably only see that engine in the next Mini) Add torsen diff. Add some coding to deal with the E-diff and to make throttle response stay in sport mode when DSC is off, and you're good to go.
The 2-series will probably launch with 4 cylinder engines tough..
_________

Originally Posted by ottopilot

1.6 turbo? And people thinkg an NA 2.0 has no torque down low? It would be pretty gutless with no top end. Can't have both.

Hell, my WRX's 2.0 turbo has shit torque under 3000 RPM.

EDIT: I failed at quoting, it was ment for the other guy lol

I was not thinking about any particular engine. But maybe the FA16DIT if its any good and they make it fit.

Modern 1.6turbo engines have insane torque down low compared to a modern 2.0l NA. Posted it earlier and will post it again: 1.6L turbo vs 2l NA
The 184hp 1.6L turbo is the one with all the torque and most of the power.


That is the regular cooper S not the John cooper works. A car with with 200+hp from a 1.6 turbo.

I can easily do 1100rpm in 6th gear uphill with my 1,6 doing under 30mph. And it will hit about 35mpg with some spirited country side driving with larger performance tires. Great torque down low! Great fuel efficiency. And very little lag.

Upcoming 3-cylinder from BMW will probably produce up to 225hp from a 1,5l 3 cylinder engine. And with more torque than todays models too! And with a soundtrack more like a 6-cylinder and fuel efficiency that is 15% better than current 1,6 models. And those engines will be about 20lbs lighter than a 4 banger. They will probably rev to 6500-7000rpm. So they should have the same same good power band as today if not 300-500 longer rpm longer.

Hopefully those engines will be underrated with about 5-20% as well like most modern BMW engines.
I bet its going the get the international engine of the year award when it comes out, and that it will have the throne for several years.

The 2.0L turbo in the 328 produces 241 hp and 275 lb-ft of torque AT THE WHEELS! And power is down low.. Gas milage, way better than the FR-S if driven in eco-pro modus and with a light foot.

[ScionRacer]

I averaged 31.5 for the first 2000 miles,now I get about 29.5 with 3800 miles on it.

[White Shadow]

Originally Posted by ottopilot

Is there such OEM engine already pushing more than 200 hp? Sounds like an expensive way to not make that much more power.

Sure, lots of them Still though, a small turbo is much more about torque than HP. If HP is your thing, you'd want a big turbo that pushes a lot of air at high RPM. A small turbo is better for spooling up quickly (no lag) and providing a kick in the pants in the lower RPM range.

[Dadhawk]

Originally Posted by einzlr

That brings back memories of all the times my own father actually *did* run us out of gas on family trips and we coasted into the gas station. I don't recall ever having to get out and push, though. My dad has always been big on cutting it precariously close

Been there done that one. Reminds me of one of my favorite Candid Camera gags. They took a car without an engine and coasted it into a gas station with a "dumb blonde" at the wheel...

[ame="http://www.youtube.com/watch?v=yGkMhGqbJhY"]Candid Camera - Car without a motor - YouTube[/ame]

[White Shadow]

Originally Posted by RaceR

I can easily do 1100rpm in 6th gear uphill with my 1,6 doing under 30mph.

Yup, that's exactly what I'm talking about. My car (Audi 2.0T) is perfectly happy driving around all day in 6th gear at 30 MPH. The torque curve of the engine makes it pull strongly at low RPM in any gear. An additional bonus is being able to pass other cars on the highway without downshifting. In 6th gear at 60 MPH, just stab the throttle and you'll have all the passing power you will ever need.

The only other car I've ever owned that had similar top gear power was my old E36 M3. Although it was a naturally aspirated engine, it also pulled strongly in top gear at highway speeds.

[DanoFA20]

Originally Posted by rikdrt1

the rating on the car is much less than the actual #'s you get in real life. This is the only car i have ever owned that does that. In other words, i am amazed that it gets almost 40mpg .. for about the same power as the Scion TC in a lighter car ... the TC cant get 40 if it were going downhill for miles..

for a toyota sports car, im happy with 30-40... if you drive it like a grandpa u will get 40 -- if u have fun with it its still around 30 plus or minus - i find myself driving alot because of the great mpgs... + its a respectable sports car - slowly becoming one.

yah dude ive been getting average with the math i did 6 gallons refilled @ 219 miles was roughly 35 mpg i switched from my e36 M3 which did pretty much dog shit. i got a good 25mpg highway if i great great grandmothered it.

this car i can keep driving and the needle barely moves i love it.

and as for the economy being not soo superb i think its incredible especially being someone who knows Boxer engines arent the greatest on MPG but this one sips fuel my friends STi gets like 19mpg if hes lucky but thats the sacrifice you give when you run over 350awhp.

[Quentin]

Consumer Reports got 23 city, 37 hwy in their 6MT FR-S. Their 6MT Mustang V6 got 16 and 35. Highway gas mileage is a function of specific fuel consumption at a given rpm, gearing, and aero drag (drag coefficient, frontal area). Weight has very little to do with highway fuel economy (that which is in motion tends to stay in motion). Weight plays a huge role in city driving, though. That is likely why the FR-S averages such good real world fuel economy. It doesn't take the beating most cars do when it comes to stop and go, which we all see some.

Plus, in the EPA test, MT cars have to shift to a certain RPM whether they need to or not; the test dictates it. Aggressively geared cars are going to be revving higher than they probably need to in order to match the dictated vehicle speed curve.

[Vonsamhain]

average over the last month (2 months before I got 23) 19 mpg, including the track and getting sideways.

[lastsnare]

Just finished off my first tank. Computer said 24.7 average, my math (counting miles driven and how many gallons till it stopped filling) says I got 25.7.
Hoping it goes up once it's broken in, and especially when they switch to the summer-blend gas next spring/summer (if the summer gas/winter gas thing is real).
I'll keep watching it each time I fill up to see if it changes. At least it's around 5mpg better than my WRX would be ;P

[smallfun]

Originally Posted by White Shadow

Really? You call that bitching?

LOL, I'd hate to see what you'd say if someone was really bitching.

BTW, I don't own the car yet, so I don't have much to bitch about.

Quit your bitching dammit!