Eloy provide great customer service and was able to help me place an order that I was completely happy with. The portions are great, the value is incredible and they give you plenty of sides (cilantro and onion, limes, two salsas, habanero and onion, and radish). Tuesdays are buy one get one free. One of the best values I found in OC or LA county. Great place! Strongly recommend.

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🔥🌮 WOW! Birrieria San Marcos is taco heaven on wheels! 🚚✨ The steak tacos = juicy & flavorful 🤤, the birria tacos = melt-in-your-mouth delicious 💯, and the queso tacos = crunchy outside, juicy inside, sooo tasty 😍🧀.

Fast service, big portions, and the BEST street tacos in the Valley. 🙌🌮💥 If you see this truck, stop immediately — your taste buds will thank you! 😎👌

Found this on a search, the food off the truck was off the chain. From tacos with guacamole plus everything else to vampiro the taste was delicious & authentic. As we drove up we witnessed customers eating on their vehicles, so when in Rome do as the Romans. I haven’t eaten on a car since my teenage years, and there I stood at 60 being the old wild one of the bunch. Excellent food, a must try for both residents & travelers!!!

really great tacos 🌮 definitely recommend

Best birria tacos I've ever had legit fire perfect ratios and delicous flavors. Man the juice dip burns so good!!!! Can't even let it cool down because its to delicous. If your thinking about where you want to eat or wanna stop somewhere for a quick bite this is the place you won't regret it!!!!