Navigate to the NAPA Auto Parts website. Add a 2015 Honda Civic EX to the 'My Vehicles' section. Confirm that the vehicle has been successfully added and is displayed on the page. Do not proceed with searching for parts or adding anything to a cart.
Navigate to 'https://www.napaonline.com/'. Locate and click the 'Add Vehicle' or similar button to begin the vehicle selection process. Input '2015' into the year field. Select 'Honda' from the make dropdown or input field. Select 'Civic EX' from the model dropdown or input field. Confirm the addition of the vehicle, if a confirmation button is present. Verify that '2015 Honda Civic EX' is displayed as the selected vehicle on the page.
Successfully navigate to the NAPA Auto Parts website. Successfully add '2015 Honda Civic EX' as the selected vehicle. Confirm that '2015 Honda Civic EX' is visibly displayed on the page as the active vehicle. Do not proceed to search for parts or add any items to the cart.