I calculated this back when I commuted daily. I was spending €700 a month on my car. Public transport would have been only €450 a month.

Still went by car. Car was 35 minutes door to door in a climate controlled environment with a good seat and good stereo system. Public transport was two hours, multiple legs with various trains and busses, various payment systems, problems with missing connections, waiting outside in the cold, being packed with others.

Gladly paid that €250 a month for 31 hours of my time and having a peaceful commute.

Plus a weekend trip was typically around €30 for four people versus €150 for four people by public transport.