If you are using your car for about 50-60 kilometers in a day, you should always opt for the petrol engine as it will provide you with a refinement that the diesel engine cannot provide. You will also have a lower maintainence cost. If the choice is between the petrol variant of the Verna and the petrol variant of the City, you should opt for the Honda City. It has a more premium look and feel over the Verna and you will not face any major problems in the years to come.