Date: Fri, 07 Apr 2000 11:36:43 -0400 From: Four Weis <mweinopsamcom> Subject: Re: Turbo and Gas MPG...
There is the "depending on how you drive" clause. If you are an "enthusiatic" driver, your mileage will be lower. If you only use your turbo boost to get you up to speed, then your mileage will be better. You actually need very little power to MAINTAIN a given speed, hence the high mileage (as displayed on the computer) once you get up to 70 mph. Manual transmissions tend to get better mileage than automatics, again depending on how you drive. I have a V-6 with a manual and the mileage varies between 31 mpg (based on gallons at fill up and odometer reading, not a brief snapshot in time by a computer) and 24 mpg, depending on how I drive. I must admit it much more fun when I get only 24 mpg. I know this will also start another debate, but I do get better mileage with premium gas than mid-grade. I also found that my turbos perform better with premium, perhaps my APC needs some adjustment since I get some knocking with the mid-grade. Jim Collins wrote: > In article <38ED44F4.DCC7B957nopsamcom>, mweinopsamcom says... > Although your statements about more air means more gas used makes sense, > actual experience doesn't bear it out. I have three turbo SAABS and they > get INCREDIBLE mileage (none have less than 110K mi on them). I have > gotten 33mpg at 70 and 29mpg cruising at 90. Perhaps SAAB has a much > better efficiency in their APC system, but the mileage is something I > couldn't believe until I saw it. > JC > > > Turbos use the exhaust gas to spin a shaft which powers a "fan" to pump fresh > > air into the engine. This allows more air and fuel to be fed into the engine > > for more power. > > > > This give you more power, but will reduce mileage, if you base it on the same > > engine. The advantage of the turbo is that it allows the same CAR to have the > > same acceleration from a 4 cylinder turbo charged engine as a 6 cylinder > > non-turbo engine. In this case it could give you better mileage, depending on > > how you drove the car. > > > > Matt Anderson wrote: > > > > > Does the turbo affect the mileage? Make it better, make it worse? I'm > > > not the most auto savvy person, and I just know turbos give you more power > > > by compressing air using exhaust gasses.
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