Date: Mon, 10 Apr 2000 19:39:57 -0400 From: Four Weis <mweinopsamcom> Subject: Re: Turbo and Gas MPG...
Winston wrote: > This makes sense... that the turbo-engined car will have better efficiency > when putting out a certain amount of power than a normally aspirated > engine. But I think that we can lose sight of this when our average MPG > dips by 4-5 when we're really gassing it a lot. Even though this might be > lower than the normal highway cruising efficiency, it is still better than > a 6 or 8cyl engine would be getting under the same circumstances. Compare apples to apples and oranges to oranges. The same four cylinder engine with and without a turbo in the same car. In this case the NA engine probably will get better mileage, just because most drivers, if given a turbo will use it. I can either get 30 mpg with my turbo if I am really careful versus 24 mpg if I employ the turbo frequently. The overall average is 27 mpg. I also have a NA 6 cylinder - which consistently get 27 mpg while accelerating faster than the turbo 4 cylinder. I will also give the 6 cylinder the upper hand on daily driving because it has better engine braking effect, due to the higher compression ratio and more engine friction. This is based on the assumption of manual transmission and the skill to use it. This makes it more fun to drive, but that is only my personal opinion. I know I will be mis-quoted on this as well, so I will end this like I did the other message. Mileage depends more on how you drive than what you drive.
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