If the vehicle is on a flexi lease(6 months or more with 30 days notice to return the vehicle) then Yes, certainly we would be in a position to change out your vehicle for another vehicle.
If the vehicle is on a fixed term lease (24 months minimum) and was sourced specifically to meet your requirements, then No, we would not be in a position to change out your vehicle. Please discuss this with our lease agent prior to signing a fixed term lease.