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JROD9496 there are several threads on this over the past couple of years if you want to search for them that may have some useful information.
It does seem low though unless you are doing almost pure city driving or full speed racing. If you look at my
Owner's Journal first post you'll see a tank-by-tank account of my fuel usage, which has never been below 29MPG and averages around 32 over >50K miles.
Also, if you are going by the onboard computer and haven't reset it since purchase that may be the issue. Mine definitely was behind the manual calculations for the first few tanks, but eventually caught up and now runs slightly above the all-time manual calculation (I'm at 32.63 but the computer says I'm 33.1).