Auto repair in Fullerton, diagnosed before it is repaired.
Sal's Auto Service is a family-owned, ASE-certified shop on Williamson Avenue. We find the actual cause, show you what we found, and fix only what your car needs.
Tue – Fri 8:00 AM – 5:00 PM, Sat 9:00 AM – 3:00 PM
- ASE-certified
- Diagnostics, not guesswork
- Family owned
- Serving Fullerton drivers since 2010
- 12 months / 12,000 miles
- Limited warranty on qualifying repairs
- 17 makes serviced
- Domestic and import, plus classics
What is your car doing?
Pick the closest match. You will get a straight answer and the service that covers it.
Everything on our front window, and what it means for your car
The services painted on the glass at 648 Williamson are the ones we do every week. Each one has its own page.
Diagnostics, not guesswork
Sal's Auto Service has been under new ownership since February 2026. Owner Robert began his automotive career in 1982 and earned ASE certification in 1986. His hands-on background covers wheel alignment, steering and suspension, brakes, electrical diagnostics, A/C systems, engine repair and drivability.
He also spent years in network engineering and technical troubleshooting, and brings that same methodical approach to modern vehicle systems. You will know what we found, what we recommend, what it costs and why it is needed before any work begins.
What Fullerton drivers say
Across Google, Yelp and Facebook, the same words come up: honest, fair pricing, clear explanations. One long-time customer put it in three words: “He never pushes.”
Vehicles we work on
Sedans, SUVs, crossovers, vans and light-duty trucks from these makes:
- Acura
- Chevrolet
- Chrysler
- Dodge
- RAM
- Ford
- GMC
- Honda
- Hyundai
- Infiniti
- Jeep
- Kia
- Lexus
- Mazda
- Nissan
- Subaru
- Toyota
We also service hybrids, light-duty diesel trucks and classic vehicles, including vintage Volkswagen, Chevy, Ford and Dodge models. Vehicles we service
12 months / 12,000 miles
A written warranty on qualifying repairs
Limited parts-and-labor coverage, whichever comes first, starting from the date and mileage on your invoice. Wheel alignments are covered for 6 months/6,000 miles. Service-specific terms and exclusions apply.
Find us at Woods and Williamson
Sal's Auto Service648 Williamson Ave
Fullerton, CA 92832
We are on the 600 block of Williamson Avenue in Fullerton. Look for the blue Woods and Williamson street signs and the service list on our front window.
| Monday | Closed |
|---|---|
| Tuesday | 8:00 AM – 5:00 PM |
| Wednesday | 8:00 AM – 5:00 PM |
| Thursday | 8:00 AM – 5:00 PM |
| Friday | 8:00 AM – 5:00 PM |
| Saturday | 9:00 AM – 3:00 PM |
| Sunday | Closed |
Auto repair for Fullerton and nearby cities
Drivers also come to us from Anaheim, Brea, Placentia, Yorba Linda, Buena Park, La Habra, La Mirada, Whittier, Cypress, Stanton, Garden Grove, Orange, Tustin, Santa Ana, Villa Park, Westminster, Los Alamitos and Norwalk.
Questions we hear most
Where is Sal's Auto Service located?
Sal's Auto Service is at 648 Williamson Ave, Fullerton, CA 92832, on the 600 block of Williamson Avenue near Woods Avenue.
What are your hours?
We are open Tue – Fri 8:00 AM – 5:00 PM, Sat 9:00 AM – 3:00 PM.
What auto repair services do you offer in Fullerton?
Brake repair, check engine light diagnostics, wheel alignment, oil changes, A/C repair, steering and suspension, electrical diagnostics, engine repair, cooling system repair, clutch and transmission service, tune-ups, timing belts and 30K/60K/90K/120K scheduled maintenance.
Which makes do you work on?
Acura, Chevrolet, Chrysler, Dodge, RAM, Ford, GMC, Honda, Hyundai, Infiniti, Jeep, Kia, Lexus, Mazda, Nissan, Subaru and Toyota. We also service hybrids, light-duty diesel trucks and classic vehicles, including vintage Volkswagen, Chevy, Ford and Dodge models.
Is Sal's Auto Service under new ownership?
Yes. Sal's Auto Service has been under new ownership since February 2026. Owner Robert is building on the reputation the shop earned in Fullerton, with a focus on accurate diagnostics and honest recommendations.
What warranty comes with a repair?
Qualifying repairs carry a 12-month/12,000-mile limited warranty on parts and labor, whichever comes first. Wheel alignments are covered for 6 months/6,000 miles. Service-specific terms and exclusions apply.
How do I make an appointment?
Call (714) 680-8809 or send a request through the form on this site. We call you back to confirm a time.
Ready when you are
Call the shop or send a request. We call back to confirm a time.