Ford Mystique Owner's Manual page 160

Spare Tire Location
The spare tire is stored under the carpet on the floor of the
trunk.
You will find additional instructions for the spare tire on the
wheel decal (located on the temporary spare wheel).
The temporary spare tire
Preparing to Change the Tire
Make sure that your vehicle will not move or roll. If you
1.
have an automatic transaxle, put the gearshift in P (Park). If
you have a manual transaxle, put the gearshift in 1 (First).
Set the parking brake and block the wheel that is diagonally
opposite the tire that you are changing.
Roadside Emergencies
161