Its about 13 gallons. But the word of advice is to not let your gas guage get below 1/4 tank. The guages on these cars are known to be inacurate. And you can run out of gas when you think you have some, and worse case, fry a fuel pump. Both are not fun...LoL
My 1991 Buick Century won't move or hold transmission fluid
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.
It holds 16 gallons.
17
18 gallons
15 gallons
A little over 17 gallons.
17
12 gallons.
17.43535537 gallons go here for info: http://www.internetautoguide.com/car-specifications/99-int/2000/buick/century/custom-sedan/526/index.html
How many gallons does a 1990 buick park ave gas tank hold
16.5 gallons