6 to 8 mpg
13 mpg
A 1991 Chevy Suburban will get 11 miles per gallon if driving in the city. It gets around 15 miles per gallon on the highway.
23 City 32 Highway 27 combined http://www.aboutautomobile.com/Fuel/1991/Chevrolet/Cavalier
30 miles
The 1991 Pontiac Grand Am gets 19 miles per gallon in the city, and 30 miles per gallon on the highway. It can hold up to 13.6 gallons of gas.
7 miles
Depends on which engine it has. Try a Google Search.
29 City / 35 Highway
between 18-25mpg depending on how you drive it
15 city and 19 highway.
As I recall, there were no Chevrolet Caprice sedans, or wagons sold in 1997. The 1991-1996 body style carried a 23 gallon gas tank, this may be what you were looking for.
I GOT 26 18 city, 26 hwy