17.5
It holds 16 gallons.
17
18 gallons
A 2002 Buick Century can hold up to 15.5 gallons of gas. The 2002 Buick Century gets 21 mpg on both highway and city roads.
The 2001 Buick LeSabre's fuel tank holds 18.5 gallons as found on http://consumerguideauto.howstuffworks.com/2001-buick-lesabre-3.htm
A little over 17 gallons.
17
The gas tank on the 2001 Buick Regal holds 17.5 gal..
25
should be 20.
17.43535537 gallons go here for info: http://www.internetautoguide.com/car-specifications/99-int/2000/buick/century/custom-sedan/526/index.html
More than 15. i think it's 15.7.