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Hybrid Technology Unique topics related to the 2004 -2009 RX400H model hybrid drivetrain and other features/options found only on the RX400H. Please use the main forum for discussion about shared components with other second generation RX models.

400h loses MPG when it is not being driven

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Old 03-29-22, 06:30 AM
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bcolins
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Default 400h loses MPG when it is not being driven
I hadnt driven my 400h in several days. My last MPG number was 23.2 mpg. Today when I started it up, the MPG number had dropped from my last 23.2 to 20.2 mpg while parked (Edit: and not running) for 2-3 days. Is this a common issue?

Brian in Austin
Last edited by bcolins; 05-26-23 at 07:59 AM.
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Old 03-29-22, 10:27 PM
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iMSQ
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In general, it can be if your ICE was ON while parked (ie, you are "in use" of gallons but miles "are zero").
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