Need advice

Currently being paid €18 an hour on a 40hour work week with a 20 minute commute there and back everyday, been offered a job that is a two minute walk from my house that pays €16 an hour and will be a 35 hour week, trying to figure out which is the best job to go with financially, if I keep my current job will have to get a second car for my partner as our son will start crèche come September. Any advice or insight would be greatly appreciated. Edit: should have specified that I am an assistant deli manager and the new job will be as deli assistant but will essentially be setting up a new deli counter in a shop that is being reopened after been closed for about a year.