E-Invoicing Applicability

Yes, E-Invoicing will be applicable here because the turnover of the petrol pump will be included while calculating the aggregate turnover. 

In the case of the Petrol pump since you will issue a Bill of Supply, E-invoicing will not apply in this case.

However, for bolt business, you will have to issue E-invoice. 

Einvoicing applicable only for b2b taxable supplies