I just noticed a post by Scott indicating that his DIC is showing 13.8L/100km (17.04 miles/gallon). So I went and checked mine which has not been reset with a little over 600km and it show 16L/100KM (14.7 miles/gallon)

Mind you, that is pretty much all city driving. Scott and I both have the LS3.
Post your stats
LS3 or L99 :
L99
Current KMS :
412
Type of Driving: City/Highway/Mixed :
City
Liters/100KM :
12.1 = 19.44 miles/gallon