01
General Auto Repair
Full-service repair for cars and trucks, from everyday issues to bigger mechanical problems.
Fullerton's honest, straight-talking mechanic
Straight Answers, Fair Prices, Cars Fixed Right
Carlos and the team at Complete Auto diagnose it straight, fix what actually needs fixing, and stand behind the work.
4.7★
Google Rating
31
Google Reviews
15+ Yrs
Years Trusted
Warranty
Repairs Covered
Family
Referred By
Services
Everything we take on.
02
Diagnostics & Troubleshooting
Straightforward diagnosis so you know exactly what is wrong and what it will cost to fix.
03
Transmission & Clutch Service
Clutch and transmission repair, including rebuilds, handled with warranty-backed work.
04
Routine Maintenance
Tune-ups and maintenance basics like air filters, spark plugs, and spark plug wires to keep your car running right.
Photos
A look around.
Straight talk, fair prices, work done right the first time
Our story
About Complete Auto
Complete Auto has been fixing cars in Fullerton for years under the same set of hands: owner and mechanic Carlos, who works on every vehicle that comes through the door.
Customers come back for the same reason, year after year: straight answers. Carlos tells you what actually needs fixing, skips the upsell, and backs his work with a warranty. Families send their kids here, friends send their friends, and plenty of them have been coming back for a decade or more.
Whether it is a routine tune up or something bigger under the hood, the approach stays the same: diagnose it right, explain it clearly, and charge a fair price for the fix.
- Owner-operated by Carlos
- Warranty on repairs
- Fair, honest pricing
- Trusted by Fullerton families for years
What customers say
“Carlos is the best mechanic you will find. I do not take my cars anywhere else. He has reasonable pricing and is honest. He won't have you fixing things that don't need to be done and he will be straightforward with you.”
“Carlos is a very honest and experienced mechanic. He has served all my cars for the last decade. All my family members and a lot of friends go to him because I recommended him and they are all very happy with his service. He never tries to sell you stuff that you don't need.”
“Complete Auto has experienced and knowledgeable staff. Carlos, the owner, made sure all work was to my satisfaction. They also have great customer service. My car was completed quickly and I was out of there in no time.”
Get it booked.
Serving Fullerton, CA.
(714) 459-9999
Get directions →3910 W Commonwealth Ave, Fullerton, CA 92833, USA
Hours
Open now- Monday
- 8:00 AM – 6:00 PM
- Tuesday
- 8:00 AM – 6:00 PM
- Wednesday
- 8:00 AM – 6:00 PM
- Thursday
- 8:00 AM – 6:00 PM
- Friday
- 8:00 AM – 6:00 PM
- Saturday
- 8:00 AM – 5:00 PM
- Sunday
- Closed
3910 W Commonwealth Ave, Fullerton, CA 92833, USA
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