Why is my Audi A6 having difficulty starting in cold weather?

I have a 2019 Audi A6 and I've noticed that on particularly cold mornings, it takes longer to start then usual. It seems to struggle to turn over and the engine sounds weak. Why is this happening and what can I do to prevent it?

During cold weather, the oil in your car thickens, making it harder for the engine to turn over. This can cause difficulty starting your car. To prevent this, try using a thinner viscosity oil in the winter or use a block heater to warm the engine before starting.