Del Taco has a separate vegetarian and vegan menu. Vegan options inlcude:
Epic Beyond Fresh Guacamole Burrito
New Beyond Guacamole Taco
Veggie Bowl With Fresh Guac

For more information, see:
https://deltaco.com/index.php?page=menu_items&category=vegetarian-vegan

Note that the majority of Del Taco locations are in the West: https://locations.deltaco.com/us

The contents of this posting, our website, and our other publications, including Vegetarian Journal, are not intended to provide personal medical advice. Medical advice should be obtained from a qualified health professional. We often depend on product and ingredient information from company statements. It is impossible to be 100% sure about a statement, info can change, people have different views, and mistakes can be made. Please use your best judgment about whether a product is suitable for you. To be sure, do further research or confirmation on your own.

For information on other quick service chains, see https://www.vrg.org/fastfoodinfo.php

For info on veg restaurants in the U.S. and Canada, go to https://www.vrg.org/restaurant/index.php