Quote:
Originally Posted by Decay107
Worst I ever got over 15 gallons was 8.2 (included a lot of spirited driving  )
Worst with evidence (average over a tank)
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Maybe you should disclose that reading was from one of your track days!
@
JROD9496, if you have a shorter geared M/T, expect lower average mpg. Also, as @
radroach said, Winter blends sold starting around mid-September are usually 10%-15% lower efficiency than Summer blends.
First things first, check your tire pressures and get your free four-wheel alignment from the dealership then start measuring.
BTW, I don't bother checking since I drive mountain roads short distances and compared to my FJ Cruiser's 13 mpg on Winter premium, 20+ is money so I don't care since I'm having too much fun.