Starting problem

Assuming that you've checked the sparkplugs, wires and the rest of the ignition system and it's all OK, good spark, etc., just an idea: if you're using no-name fuel to save money, try a tank of the good stuff, like any major oil company brand. Cheap fuel is not always blended for your local temperatures and may have too much alcohol or summer (heavier) distillates to ignite in the cold. Name brand fuel is more likely to be fresh and blended for your area. If you're already using the good stuff, I suggest you find a SAAB specialist to help you. If you want to find a specialist, here's a directory link for you: https://repairpal.com/saab-repair-in-north-adams-massachusetts