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Old 08-21-2022, 02:09 AM   #4 (permalink)
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ND Miata - '15 Mazda MX-5 Special Package
90 day: 39.89 mpg (US)

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Originally Posted by Mcgiiver View Post
The upshift indicator on the BRZ wants you to upshift at 1800 rpm, which is ridiculously low. The mileage on this really benefits from being in a high gear quickly. RPMs, even at light throttle, kill the mileage.
This has been my experience with every car I've owned. My MX-5 suggests shifts at around the same point, with the next gear typically landing me somewhere around 1300rpm. It'll get 50mpg+ if driven that way without stop and go.

BSFC islands are almost always wider than they are tall, on the chart, suggesting it's almost never a good idea to hold onto a gear when you have another gear you can shift into and not shake the car to pieces.
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