Quote:
Originally Posted by DARK_M3
It's funny how on every car forum people ask this. As if there's some magical number that is correct.
Here's a short answer, it varies. Does that help?
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Magic, how does it work?
Ironically, depending on the engine, configuration, there are sweet spots for shifting and keeping ideal mpg. While it depends in general, you can find the ideal operating rpms and gears for highway and around town driving to achieve the particular desired results.
My previous car was turbocharged, after a certain RPM, power would drop, before redline, so shifting points would be adjusted to power curve, not redline.