I get 25-27 80% city, and 29-31 80% highway tanks. I think my car is smoking more then it's supposed to be, so it could be on the low side. I ran a purge, but think I need to do it again and I noticed a little fuel on the injectors this morning, so need some attention there.

I would GUESS that 28-30 should be city and 32-35 should be freeway on average grade fuel.

Good luck!

-m

__________________
Now:
2018 Tesla Model X
1999 S500 Grand Edition 164k
1992 300D 2.5 Turbo 287k
2005 E320 4MATIC wagon
1991 Alfa Romeo 164L 99k (sleeping for a while)

Then: 96 Lincoln TC, 93 Lincoln TC, 87 560 SEL, 87 300 SDL, 80 300D, 89 560 SEC