So, it’s a diesel. I not familiar with a Verso dashboard, but usually a diesel car dash will have a light that, when cold, when you switch ignition on a light will glow for a period of seconds to indicate the glow plugs are working. The length of time that light shines will be longer when it is colder. Your handbook should show where this light is on the dash.
Diesel engines do not have a spark plug that cause an explosion. Diesel works by high compression causing heat, thus in cold weather the glow plugs create additional heat to help the system work.