Two (at least in the V6), one for each bank of cylinders.
4
2
FOUR
it has a total of four
Four
There are two.
Is this a trick question , because there wasn't a 1998 model year for the Mercury Cougar The 1997 Mercury Cougar , with the 3.8 liter V6 engine , has a ( 18.0 US. gallon tank The 1999 Mercury Cougar , with the 2.5 liter V6 engine , has a ( 15.4 US. gallon tank )
Mine is an automatic and it has 3. one on each exhaust manifold and one after the cat.
The Owner Guide for the 1999 Mercury Cougar shows ( 5.8 quarts with filter change ) for the 2.5 liter V6 engine
The ( 1996 ) Mercury Cougar gas tank capacity is ( 18.0 U.S. gallons )
The ( 1996 ) Mercury Cougar gas tank capacity is ( 18.0 U.S. gallons )
For a 2000 Mercury Cougar : The tank holds ( 15.4 US. gallons )