Why does my Ford S-Max struggle to start in cold weather?

I have a Ford S-Max and whenever the temperature drops below freezing, the car has trouble starting. What could be causing this issue and how can I fix it?

Cold weather can affect the performance of your car's battery, making it more difficult for the car to start. You may need to replace your battery with one that has a higher cold cranking amps (CCA) rating to handle cold temperatures better.

Another common issue in cold weather is with the fuel system. Make sure to use a winter-grade fuel with a lower freezing point to prevent fuel from becoming too thick and difficult to flow through the fuel lines.

If your car has a diesel engine, there could be a problem with the glow plugs which help ignite the fuel in cold temperatures. Have a mechanic check the glow plug system and replace any faulty plugs.