Wife was driving the 07 X5 3.0 home and the CEL came on and the car started sputtering. Eventually the CEL went off. I checked the code with Torque and it gave a pending p0305, misfire on cylinder 5. Here is the report

MID:$a6 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 5 Data
Max: 65,535Count Min: 0Count
Test result value: 56Count
PASS

Searching all the misfire posts seems to bring up a lot of people chasing fixes. Should I monitor this or throw a new coil pack at it?