OK, maybe you got me for now. But....you have an expensive battery to replace in a couple more years, I just have an expensive timing belt to replace at 100K

I am a leadfoot (hwy 75-80 mph depending on the state), how would that affect the Prius' mileage?

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'85 300D - 206K (sold)
'81 240D - 149K (sold)
'03 Jetta TDI - (sold)
'79 300D - (sold)