Rancho Performance Transaxles
“Aside from the quality of work, David was great to communicate with from start to finish which is no easy task with a 3 hour time zone difference.”
Best Car Tune-Up in Fullerton, CA
24 technicians listed · all 24 in Fullerton · 13 open weekends · 20 rated 4.5+
Data verified October 16, 2026
Fullerton Auto Repair Clinic & Body Shop
“These guys are the best fair on their price fairly quick service is great.”
Haus
“Had good luck working with these guys on the G80 platform from BMW.”
Monzon Garage
“Been coming to Joe for nearly 8 years already, from oil changes to smog checks they do an exceptional job all the time.”
Stryker Performance
“Only bmw shop I can trust with my performance and maintenance needs”
S5X Performance
“They have gone above and beyond to make sure it turns out amazing and have sent me picture updates along the way so I may get a glimpse of its transformation as they work through it :)”
Listed for drivers in and around Fullerton, CA, these 24 shops handle tune-up work and running faults. What each one says about diagnostics, warranties and service specials comes from its own website; ratings and quotes come from public reviews.
Area overview: Fullerton, CA
All 24 technicians we list here are in Fullerton itself. We have 41 technicians in Fullerton on file; this page shows the highest-rated 24. The technicians on this page are rated from 4.3 to 5.0 across 1,831 reviews; 14 have 50 or more reviews and 20 are rated 4.5 or higher. The topics that come up most in reviews of the technicians on this page are "price", "honest" and "fair". 13 are open on Saturdays and 1 on Sundays. 1 lists staff certifications (ASE) and 4 have a BBB rating of A or A+. 13 have ten or more years of experience, the longest 60 years. 1 gives free estimates; 2 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for 12 of the technicians on this page; 5 publish a contact page; 6 list a public email and 1 takes bookings online. We count these figures across the technicians on this page; hours and prices change, so confirm the details with the technician before you visit.
Which shops listed for Fullerton open on Saturdays or Sundays?
13 of the 24 shops here show Saturday or Sunday hours. Plugs and filters fit neatly into a Saturday. A chase for an intermittent misfire does not, since it can need the car overnight to catch the fault happening from cold.
Fullerton Discount Tire Center
“AND they didn't try to upsell me or pressure me to buy a new tire or to buy a whole new set (which has happened every time I go to a national chain)”
Superior Tire Services
“Manager took a look and told me my tires were still in very good shape and I could save some serious money if I allow them to just repair the tire.”
J&J Auto Service
“They are always kind, and if you have any questions, you can ask them comfortably and they give you honest answers.”
Terry's Automotive
“Matt provides clear and concise information to make sure that you are knowledgeable about exactly what was wrong with the car and what they did to fix it.”
FZ Garage
“This place is awesome friendly reasonable rate and they get the job done”
Orange County Fleet Services
“Super helpful Darin called back really quickly and gave us info even though he was out of town.”
Vision Auto
“The prices are fair but on the higher side due to using either the oem or better parts.”
Orange County Tires
“Liked service, called before hand and got detail.”
Pops & Sons Auto
“Joel replaces my front breaks and told me that my back breaks were still good and there was no need to change those yet.”
Cedillo's Auto Repair
“Ralph replaced my fuel line and regulator after doing a diagnostic on my car (which had stopped running during Covid).”
Union Services Center
“Ben and Wayne are the best.”
Sal's Auto Service
“I definitely recommend going to him for all your car needs.”
차수리 BK Automotive
“I had a couple of issues with my old Honda Odyssey and he took care of them in less than a day.”
S&K Auto Repair
“He found that the battery was not good and helped tighten the screws around the battery.”
Complete Auto
“If you are looking for a mechanic who gets the job done right the first time.”
Westerfield Motor Sports
“Shane can you make a t-shirt V neck for females.”
Tecnicar Auto Service
“Extremely great service a great price”
MD Auto Care Repair Services
“My whole family has been taking their cars there for years.”
Why these companies made our list
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