• @jimbolauski@lemm.ee
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      111 months ago

      There are a lot of issues with his calculations.

      For people driving 12,000 miles a year their mpg will be higher, more highway miles.

      The 10mpg difference in new car vs old for similarly sized cars is over 20 years. The 2001 impala I used to have got 25 mpg.

      People that buy new cars typically have cars less than 10 years old that they are replacing. People typically don’t go from a clapped out 20 year old car to a brand new one. The “old” car most people are trading in is getting 30-35 mpg.

      I’d put the number at 5-7 years for a car that’s less than 5 years old.

      • @Kecessa@sh.itjust.works
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        211 months ago

        You can drive 6k miles a year and based on averages you’ll be carbon negative after about 8 or 9 years. The sooner people switch the better, even if it means “wasting” gas cars that are still road worthy.