Why is there white smoke coming from my Audi 80's exhaust?

I recently had my Audi 80's engine replaced and now I'm noticing white smoke coming from the exhaust. What could be causing this and how can it be fixed?

White smoke from the exhaust could be a sign of a blown head gasket. It's important to get this checked by a mechanic as soon as possible to prevent further damage to your engine. I would recommend taking your car to a reputable mechanic for a proper diagnosis and repair.