General Auto Repair
Full-service repair for cars and trucks, from routine maintenance to major mechanical issues.
Honest auto repair in Fullerton
Our techs diagnose the real problem, explain it in plain language, and get you back on the road fast.

Services
Full-service repair for cars and trucks, from routine maintenance to major mechanical issues.
Thorough diagnostic work that identifies the real issue and explains it before any repair starts.
Repairs to get vehicles that failed smog inspection passed, diagnosed and fixed the right way.
Photos



Straight answers, fair prices, cars fixed right
Our story
We started Monzon Garage on a simple idea: tell customers the truth about their car and charge a fair price to fix it. Every vehicle that comes through our bay gets a full diagnosis and a plain-language explanation before any work begins, so you always know what you're paying for and why.
We handle everything from stubborn check engine lights to repairs other shops couldn't get right the first time. When a customer's truck failed smog inspection twice elsewhere, our techs found the actual issue and had it fixed and explained within hours.
We treat every customer like family, because in a neighborhood shop like ours, that's exactly what they become. If you're looking for a mechanic in Fullerton you can trust for the long haul, we'd like to earn that trust.
What customers say
“Very professional, efficient and fair pricing. I took my Nissan Frontier truck, because it didn't pass the smog twice in a row at another shop. Monzon techs diagnosed it and made all necessary repairs within a few hours and thoroughly explained the issues. I'll definitely be returning with my other vehicles and will be recommending, family, friends and coworkers. Good shops with trustworthy mechanics are hard to come by. Thanks Monzon!”
“Took my truck here after a previous shop completely screwed me over and this shop is incredible. Every single thing I told them about they fixed or offered me multiple options to get it sorted out. It's rare to find a reputable shop that does honest good work but this place is the one. I highly recommend this place for your automotive repair needs 100% they do honest work and charge a reasonable price.”
“I took my car here for the first time today and I will definitely be bringing it back whenever my car needs anything in the future. These guys were great, very personable and very good at what they do, and fair priced as well. I will definitely recommend them to anyone that needs help with their vehicles.”
Serving Fullerton, CA.
112 N Malden Ave, Fullerton, CA 92832, USA
112 N Malden Ave, Fullerton, CA 92832, USA
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