I’d check the lid, smell it, taste a little and if it seemed ok then use it. Thinking about it I rarely look at the date on tins or jars, maybe I should. .
Ditto, Missfood, they are all far too sweet for me. If I make a tomato based pasta sauce the most sugar i would add, depending in the quality of the tomatoes, would be a pinch.
It will probably contain a lot of sugar, this acts as a preservative. Either way I’ve never tasted a nice processed pasta sauce so you may never know if it was off or not.
I recently made jellied beetroot with jelly which was best before May 2018. It was fine. If your sauce looks okay, smells okay and tastes okay, then go ahead and use it.