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    OC Automotive and Diagnostics

    4.8 (133 reviews)
    Closed • 8:00 am - 5:00 pm

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      Services - OC Automotive and Diagnostics

      Auto engine repair

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      Other headlight not placed in at all
      Nathan A.

      I brought my car to OC Automotive Diagnostic to repair a busted headlight lens. From the start, the experience wasn't great--the front desk staff had a dismissive attitude when I first dropped off my car, which already gave me a bad impression. After the repair, I noticed that my headlights were dim while driving at night. When I checked under the hood, I found that one bulb wasn't plugged in correctly and the other wasn't installed at all. It's frustrating to deal with this kind of sloppy, careless work, especially on something as important as lighting for nighttime driving. Between the poor quality of the repair and the lack of professionalism at the front desk, I won't be returning and can't recommend this place to others.

      OCAD is on Whittier Boulevard, across the street from LHHS.

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      9 days ago

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      Anthony W.

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      6 months ago

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      Anthony W.

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      2 months ago

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      1 year ago

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      8 months ago

      Friendly, affordable, and quick. Just bought a 2024 Tundra and this will now be my go to place for anything I need done to my truck.

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      Anthony W.

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      10 months ago

      Helpful 2
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      1 year ago

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      1 year ago

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      Anthony W.

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      1 year ago

      Everything was excellent. They even picked up my car from my house. I will definitely be coming back.

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      Anthony W.

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      11 months ago

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      1 year ago

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      Anthony W.

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      4 years ago

      Helpful 2
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      1 year ago

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      Anthony W.

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      1 year ago

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      1 year ago

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      Anthony W.

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      4 years ago

      Helpful 6
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      1 year ago

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      1 year ago

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      6 years ago

      Helpful 3
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      2 years ago

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      2 years ago

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      Anthony W.

      Thank you for the review Emelio.

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      1 year ago

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      1 year ago

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      2 years ago

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      2 years ago

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      Anthony W.

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      2 years ago

      Solid guys, honest work! Fixed my truck on the fly so I could make it home from work!

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      3 years ago

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      2 years ago

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      Anthony W.

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      3 years ago

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      6 years ago

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      4 years ago

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      5 years ago

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      4 years ago

      As advertised, solid rundown on my vehicle maintenance needs. Would recommend for professionalism.

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      4 years ago

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      2 years ago

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      Anthony W.

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      6 years ago

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      Page 1 of 4

      Ask the Community - OC Automotive and Diagnostics

      Review Highlights - OC Automotive and Diagnostics

      “Anthony is always patient with questions and he gives detailed explanations of needed repairs and costs.”

      Mentioned in 88 reviews

      Read more highlights

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      (I had this in my drafts and forgot to post so im posting it now)…read more I usually go to a mechanic in Upland, CA but when my check engine light turned on yesterday while i was here in Whittier i decided to look for a mechanic in this area since im always in Whittier. We went driving around to see what shops we found. Im really big on vibes and so when i spoke to a few mechanics I didn't feel comfortable with them. I wanted a place that wasnt overly expensive but that did a great job. After stopping at a few shops we saw this one and stopped. My first impression was 50's vibe lol Its like a small historic museum with a lot of retro items. The person I spoke to came across as a "no bs" type of guy. I heard him talking to the person in front of me and although I was a bit intimidated I felt that he would be honest and felt a good vibe. He was very professional. The communication was excellent. Service was quick. And they explained what needed to be done in a way I understood. The receipt they give is very detailed which I loved. I have since got a new car but if i ever need a mechanic, i would come here!

      Came here today to have Freon added to my car. Air…read moreconditioning in the car had been poor recently and it wanted it to work with the summer months coming around. I called prior to get a price quote and they said it could be done today. I decided to wait while they did this service. (Btw, Freon is $10 an ounce!) *This is my usual place to come to get a quick oil change too! Price is reasonable and they are open 1/2 day on Saturdays.

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      After being stranded on the side of the road, I needed my car fixed at an affordable price. We…read moreoriginally thought we'd have to replace the entire Thermostat Housing Assembly which was going to cost us $50-$80 just for the part. Thankfully, while we were on our way to buy the part, Mr. Veraj called us to let us know we actually only needed a simple connector which cost us less than $25 instead. He then lowered the cost of his labor he'd quoted since it would be a simpler fix as well. He was very friendly, helpful and fair. We would definitely recommend him to friends and family. The shop is also conveniently located just a block from downtown Fullerton. Lots of parking and space for the tow truck to drop off a vehicle.

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      I brought my car in here for a diagnosis because the car wasn't running properly and the check…read moreengine light came on. I was told that I needed a new engine and it would be like $6000. I got a second opinion and found out a tensioner in the timing chain had broke, and that was it, they rebuilt the timing system and I'm back on the road for less than $2000. I wouldn't trust them to change my oil.

      Los Primos Tires And Auto Repair

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      First time coming here and I'm so glad I did! I called ahead about getting used tires and they were…read morevery helpful and friendly over the phone. When I arrived, the service was just as great in person. They were professional, answered all my questions and made the whole process easy and stress free. I really appreciate the great customer service and would definitely recommend this shop to anyone looking for good quality used tires and honest, helpful service. I'll definitely be coming back!

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      OC Automotive and Diagnostics - autorepair - Updated September 2026

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