My battery advise is to not "lugg" a 5-speed Insight. Even if you don't lugg, upshifting early on a hard acceleration puts a big drain on the battery pack - DON"T DO IT. The Insight is not a sports car and should not be driven that way. The early Insights (2000 & 2001) had MCM and BCM module problems so I'd make sure they are corrected so the miminum battery pack charge is at least 40% or a dead 12-volt battery does not drain the hybrid battery pack. Finally, I'd park the Insight in the shade in hot weather and run the A/C at least some of the time to avoid battery overheating.

61.5mpg lifetime - 82mpg in recent months

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"fanatic" is what the lazy call the dedicated