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    A1 Auto Mechanics & Smog

    4.6 (209 reviews)
    Open 8:00 am - 5:00 pm

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    Response time

    50 minutes

    Response rate

    50%

    Services - A1 Auto Mechanics & Smog

    Auto brake repair

    Auto engine repair

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    Harry S.

    Mehdi is an absolute legend!! Helped me out a ton to get my car fixed and was super fast. 100% would recommend if you ever need a reliable car mechanic for a great price.

    Kia Service Receipt for reference.

    I created a yelp profile just so i can leave this review! I came to this auto shop due to its high ratings on Yelp and how close it was from my residence. Prior to coming in, my check engine light came up and I noticed my Kia was acting strangely (losing power and a clicking noise from my engine). I was helped by 2 gentlemen and was advised my Kia needed a few items to be replaced. After the repairs, they took my Kia on a test drive and notified me that the vehicle died on them and needed to be towed back to their shop. It was a Friday evening and was advised I would have to leave it there over the weekend. Come following Monday, A1 Auto called me to inform that my Kia was now up and running and everything was fine, ready to be picked up. While I was driving home from the shop, I noticed my Kia was still sluggish and making the same engine sound prior to all the repairs. I called to let the shop know about the same issues, and they told me they recommend the Timing Belt to be replaced as well. I already felt duped with all the add-ons of repairs and dishonesty from the beginning. Trusting my gut (that the timing belt won't fix the issue) I decided to take my Kia to another mechanic for a second diagnostic to see if the same or new repairs are needed. At the new shop I took my Kia to, they ran their diagnostics and instantly advised that my engine was bad and needed to be rebuilt/require a new one. They informed me to take my vehicle to any Kia Dealership to ask for a new engine replacement. After 2-3 weeks later, Kia replaced my engine with a brand new one just like the new shop advised. What's even better? It did not cost me anything but time. I'm leaving this 1 star review due to feeling taken advantage of not only as a woman, but a person who was in need of emergency help. I'm always skeptical to try new shops as you always hear the stories of dishonesty and being advantage of with unnecessary repairs (over $1,300 on my end). I would of been ok if A1 Auto simply was upfront with me that my engine was bad and needed replacement, and would of easily compensated for their time as they should but, this was not the case. Do your extra research please! Ask multiple auto mechanics for diagnostics and stay away from money hungry shops that prey on the less informed like this one! PS: attached pic for reference from KIA dealership to prove my review is indeed just!

    Chillin in the waiting area while getting an oil change.

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    4 years ago

    Great service. Super nice guy running it and quick smog check. Easy and fast process with really good deal on Groupon!

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    4 years ago

    Fast smog service. Convenient location , nice waiting room. Friendly service, will go back.

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    Page 1 of 6

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    Review Highlights - A1 Auto Mechanics & Smog

    Going to auto shops can be full of anxiety and uncertainty, but Mehdi treated me with respect and kindness.

    Mentioned in 25 reviews

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    Performance Auto Service & Repair

    Performance Auto Service & Repair

    5.0
    (284 reviews)

    I can't express how grateful I am for Performance Auto Repair in Costa Mesa. Even though I live all…read morethe way in Chino, something about their reviews made me feel like I could trust them -- and I was right. When my SUV overheated and the engine failed, I was overwhelmed. But the moment I spoke with them, it felt like a weight lifted. They understood exactly what was happening before they even saw the car. Instead of pushing a costly $6,000 engine replacement, Byron found a way to rebuild the engine through a machine shop, saving me thousands. That kind of honesty is rare. The repairs took time, but they never rushed. They kept us updated, checked every detail, and refused to release the vehicle until they were absolutely sure there were no leaks, no issues, no surprises. After dealing with another shop that returned our Honda Pilot with oil leaks, this level of care meant everything. What stood out most was their integrity. Their kindness. Their commitment to doing the right thing even when it takes longer or costs them more effort. If we lived closer to Costa Mesa, we'd bring every one of our vehicles here without hesitation. There truly aren't enough words to describe how thankful I am for Byron and his team. They didn't just fix my SUV -- they restored my trust in what an honest auto shop can be.

    I recently moved to Costa Mesa, and when I discovered power steering fluid all over the ground, I…read moreneeded to find a mechanic quickly. With plenty of shops nearby, I went through the reviews and Performance Auto immediately stood out. People consistently mentioned their honesty, expertise, and customer service, and my experience lived up to those reviews. They were able to diagnose and repair the issue within a few hours, kept me informed throughout the process, and clearly explained what was happening. Since several different things could have caused the leak, I appreciated how thoroughly they evaluated it and accurately identified the problem. Luckily, it turned out to be a relatively minor repair. Everyone was friendly, knowledgeable, and genuinely helpful during a stressful situation. The repair also cost much less than I anticipated, which was a welcome surprise. It's great to already have a local mechanic I can trust, and I'll definitely be returning to Performance Auto for any future automotive needs.

    A&J's Auto Garage

    A&J's Auto Garage

    5.0
    (55 reviews)

    It's rare to find kind people who truly care about clients in this industry. It's surprising to…read morecome across people like Arnold and Arnaulfo. Their prices are the most fair in the area, but the quality, the skill, the knowledge that were provided was TOP NOTCH. Very honest and knows alot about cars. They deserve your business and referrals. I called them and they were able to squeeze us in after I told him we had an urgent case and needed their help. He found more issues that other shops probably wouldnt have caught. Auto scientists with MAD SKILLS. Arnold educated and guided me and we were able to make the best and right decision on the vehicle. Thanks man!

    TRUSTWORTHY. Highly skilled. Knowledgeable. Kind. That's exactly how I would describe Arnold and…read morehis father. If you need a pre-purchase inspection or any auto repair, whether it be european, american, japanese made, etc, and EVs, take your car here and don't think twice. We reached out to Arnold for a pre-purchase inspection. While six other places quoted us $250-$350 for a "comprehensive" inspection, we paid Arnold $100, which was a STEAL for what he did, even more than what the others promised. He spent at least two hours thoroughly checking the vehicle, test driving it and walking us through every detail so we truly understood its condition. We were looking at buying an Audi Q4 e-tron that had a damage report. A reputable dealership told us it was "minor" and offered to take it to the mechanic for our peace of mind. After browsing Yelp and reading the amazing reviews, we decided to come here instead and I'm so glad we did. I had already done my due diligence and familiarized myself with the vehicle and potential issues. I asked Arnold very specific, technical questions that I already knew the answers to. He answered every single one with clarity and confidence and everything I was expecting to hear. My husband stayed the entire time, and Arnold patiently explained everything while inspecting the car. You can tell he was that kid that made the auto shop his playground growing up. He's passionate, meticulous, and GENUINELY cares. What impressed me most is that Arnold will never pressure you. He won't tell you "don't buy it," but he will clearly explain what could go wrong and what it might cost to fix. When I pressed him for his honest opinion, he said he personally wouldn't buy it at the listed price but if we negotiated it lower, then it might be worth considering. That level of honesty is RARE. They are your small local auto shop but I would choose them over any flashy, grandiose service center any day. Their integrity and transparency make them stand out. Thank you so much, Arnold and your dad, for the amazing service. We ended up just buying a Tesla!

    Big Brand Tire & Service

    Big Brand Tire & Service

    4.6
    (166 reviews)

    10/10: Friendly, professional, fast, efficient, and flexible to your needs…read more I drive a lot for work, so needing tire repair and fast service is critical. My tire pressure light came on, I acted quick and was actually referred to another larger tire shop chain on Bristol, but they did that classic thing where they acted like they didn't need your business, and said they'd call me after pre-checking in before the real check in. I called Big Brand while I was serving as cattle, they said they'd get me into the schedule when I arrived. My tire was already getting fixed by the time the other place called me to check in. They patched it up, and sent me on my way - free of charge. I insisted I pay but they refused. They didn't need to do that. Good guys. Based on their dedication to helping people, I will always recommend them. I owe y'all a case of beer. Thanks again.

    I was helped at first by joe, who originally checked out my car, and then helped by jeremy on the…read moreday I received service. they are both so great!! everyone was really friendly and helpful. I called my normal car guy to see what he thought about the service I was needing and what they were charging for it, and he said it was a really good deal for the services. I didn't feel pressured into making any rash decisions and now my car is safely drivable again. plus they were both really funny. all around great experience! car stuff is always so stressful so it was refreshing that they made the process so simple. thanks, guys!

    A1 Auto Mechanics & Smog - autorepair - Updated August 2026

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