My 2008 Malibu LS loses power and bogs down when it is cold. It has just started doing this. Any ideas as to what the problem is??

Is the check engine light on? Is it flashing?

engine light is not on

When is the last time the spark plugs or wires were changed?

They have never been changed

If money is tight I would at least change the spark plugs. If you can afford it, change the plug wires as well. Even if this does not correct the performance issue you are experiencing (it might, it might not) it will be money well spent. You should also change the fuel filter.

In shorter words your vehicle need the major service to solve this issue. You can change the wires and plugs by yourself and also can be done by a professional it depends on your budget.