I have an 05 marquis. Will a 2010 grill fit? If not what year can I go up too? Thank you

 

Grill = For cooking steaks.
Grille = Front of car.
Brand new Grand Marquis grilles can be had at Amazon.com for 40-60 dollars.
The grille for your '05 Merc fits three (3) different years -- '03, '04, & '05.
Other years are not directly interchangeable.