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Today's Cars and their MPGs

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Old Nov 10, 2007 | 11:55 AM
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Default Today'* Cars and their MPGs

*Placed in the Lounge due to dicussion of other cars*
Reading this thread in General Chat ( http://www.bonnevilleclub.com/forum/...ic.php?t=88955 ) got me to thinking...

Our cars starting in 89 was capable of more than 30 MPG on the highway with a large V6 (both NA and */C) (not counting the GX3 geared one) pretty effortless. Now today'* compacts are capable of that on the highway. For example, a Toyota Yaris with a 1.5L four banger and auto gets 35 MPG on the highway. Granted all compact cars got us licked in the city but highway is what we're focusing on. Our cars are faster, bigger, and more comfy than that and we're only 2-3 MPG behind it.

What gives? I never understood why we're competivite on the highway with other compact cars even though we're faster (than most of them) roomier, and full-sized.

Can anyone explain?
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Old Nov 10, 2007 | 01:03 PM
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I think it has to do with the way the motor is designed. tempos advertised 40+ mpg on the road back in the day. One guy i think got 52mpg one time. I think it has to do with the low end torque of the motor. Most cars now days are all OHC, DOHC, etc, which dont have the low end grunt that the OHC'* do. maybe?
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Old Nov 10, 2007 | 01:56 PM
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i think don covered it pretty well

just looking at my sisters honda, which has a 2.2L, runs like 3000 to 3500 rpms at 70-75 mph ish, where as my bonneville used to run like 2000 rpms. if they could make a 4 banger put out as much torque (right ) they could probably get 50'* or 60'* in the MPG range

and a DOHC 3800 would be SWEET!
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Old Nov 10, 2007 | 05:14 PM
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24v 3800 would be sweet, I did a thread on it a few months back and not too many people liked the idea.

http://www.bonnevilleclub.com/forum/...er=asc&start=0
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Old Nov 10, 2007 | 05:23 PM
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Yeah... the Civvy turns 2800rpm at 100km/h (60mph). And 3450rpm at 120km/h (75mph). It'* the gearing. That said, this gearing means that there'* a lot more highway punch than you'd expect out of a 92hp (when new) 1.5L coupled to an autotranny. Once you're up to speed, it'* super super rare that this thing has to kick it out of overdrive in order to make it up hills or for any passing. I just put my foot down a tad more and watch the speed climb steadily.

The 4-speed auto redlines out of first gear at just under 40mph
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Old Nov 10, 2007 | 06:46 PM
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19/25 mpg
http://www.subaru.com/shop/specifica...mmand=features
It is funny I could go all day and get 27-29, but the cars that are comperable in power gets worse then my granny land barg. the ricer are toting that imports are superior in every way. I just find it funny.
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Old Nov 11, 2007 | 08:45 AM
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Lets face it the 3800/ 4t6x combo was one of the most efficient there ever was.
Even dealers when I tell them The big old OLDS gets 32+ mpg hwy doing 75 and 180k on the odo.
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