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    DNZ Automotive

    4.6 (160 reviews)
    Closed • 8:30 am - 5:00 pm

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    Response time

    10 minutes

    Response rate

    100%

    Services - DNZ Automotive

    Auto brake repair

    Auto engine repair

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    Reviews With Photos

    Used my computer to read codes after they cleared them-B1S1 still front manifold. They just cleared codes, didn't fix anything

    $1350 Repair Failed Immediately - Check Engine & Overheating Review: In May 2025,I paid over $1,350 at DHZ Automotive for a major repair that included a new timing belt, water pump, and thermostat (see invoice). The result was catastrophic. Immediately after driving away, the check engine light came on and the van began overheating again, reaching dangerous levels (see photos of the dashboard gauges). I returned immediately. Their own scanner pulled codes P1130 and P1135 (see photo), which are related to the air-fuel sensor and heater circuit--issues that were not present before their work. Despite this evidence, the service advisor and owner dismissed it as a "coincidence" and asked for more money to fix the problems they created. The disorganization was shocking. An employee actually had to call me and ask me to text them my own invoice because they had no record of what work had just been done on my car. How can you trust a shop to warranty their work if they don't even keep their own records? They refused to honor their own 1-year warranty. I've had to use my own scanner to monitor the car myself (see photo). The attached invoice proves the work they did. The attached photos prove they failed. This shop cost me over $1300 and left my van in a more dangerous state than when I brought it in. Avoid this place at all costs.

    DNZ is the best
    David R.

    DNZ works on all of my families vehicles, I've lived in the Costa Mesa area for over 30 years and this is my go to mechanic. It doesn't matter what the situation is if it's not something he works on he'll put you in the direction where you can get it fixed. The owner and his staff are very friendly and they're extremely helpful. I brought in our BMW M3, our Honda Truck and just the other day I saw him working on a new model Chevrolet Corvette. if you're looking for an honest, friendly and really good mechanic then look no further because you found it.

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    3 months ago

    had a situation that my car couldn't accelerated and they fix it quickly. very professional and experienced

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    Great service great pricing and transparency was great. Not much else you can ask for automotive work

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    1 year ago

    Caesar helped me with a loose bottom panel on my truck. Went in with no appointment and he fixed my problem in 5 minutes. No hassle at all.

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    3 years ago

    Business owner information

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    4 years ago

    Repaired my AC at a fair price and got it done quickly! Very good service and nice team!

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    4 years ago

    Great shop knocked the problem out great discount little issues the took care of it legit

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    Review Highlights - DNZ Automotive

    “George was super friendly and chill and made it clear what kinds of services I needed for my "classic" i.”

    Mentioned in 9 reviews

    Read more highlights

    Oilstop Drive Thru Oil Change

    Oilstop Drive Thru Oil Change

    (681 reviews)

    Such a great experience all the guys who worked on my car were friendly and went above and beyond…read moreto make sure I was comfortable and informed the entire time. I didn't even have to get out of my car and was in and out within 30 minutes. They offered water, soda or coffee and did not try to upsell me at all but made recommendations. They also tried their best to give me the best deal and apply discounts. I got a free car wash which is awesome! Good to know that the car wash is not onsite it's actually at another location but nice freebie. I'll def be back!

    I was referred here by one of my coworkers. This was my first oil change here and they guys are…read moreinformative and they look like they all have fun coming to work and happy employees are important to me. I never know whats true or not. They bring me oil colors so I can see the difference between my dirty colors and the new vibrant colors I should have. So of course I want my car to run great so im saying yes to every new filter and yes to every new fluid but Im not a mechanic so im trusting them like I've trusted my last oil change place. There is a good energy here and I hope they are doing everything they say they are doing because this is my only vehicle and Im a single mom with 2 teenagers. Between the 3 of us we are constantly going to and from everywhere. So far im happy with the service but I still have 3 guys under my hood. The real test will be how well we do until our next inspection. Based off my experience so far I will be back =). FYI: I was a committed customer to Valvoline Express off of Dyer and Main in Santa Ana but they did something I didnt like during my last oil change. So the last time I was there left a great review but before I drove off the guy brings me a list of all the things they did to my car and the only thing I recognized was Replaced windshield wiper. I knew for a fact they replaced them. They guy apologized and replaced them but now how do I know what else "they forgot" to do?

    ExperTec Automotive

    ExperTec Automotive

    (421 reviews)

    Tuesday after Labor Day, 100 degrees, Expertec is two technicians short ( what??? people calling in…read moresick after a holiday??‍) And 19 appointments. My oil and air in tires are low.! Gary, the manager, personally added oil and had a lovely young man who was, of course, sweating, added air to my tires. This is the great service this location of Expertec provides. Normally, it's preferable to make an appointment and Mike will drive you home or to the office AND pick you up when your car is ready. I have never had such good service anywhere! Of course, I highly recommend Expertec Costa Mesa!

    I've come here twice and have been happy with the service. Mostly because my car is returned to me…read morewithin a decent timeframe. I was going somewhere else prior and they would keep my car the entire day for a basic oil change. The first time I came after having my car serviced elsewhere and heard an odd sound when I got it back. I asked ExperTec if they could get my car back to me by the end of the day and they weren't sure, however I did get my car back within a few hours. I think they're priced fairly compared to other places in the area. I like that they're open on weekends too. I'm not a mechanic by any means but I'm also super wary of being taken advantage of which happens almost every where I go. I will say they did tell me my car passed their inspection then tried to recommend a bunch of services I'd had done recently. They didn't push me to get them or try to scare me into thinking my car was going to explode if I didn't do the recommended services lol. I've recommended this place to a couple people and they've been happy too so I think they're pretty good overall.

    Valvoline Instant Oil Change

    Valvoline Instant Oil Change

    (287 reviews)

    This was my third visit here, and the crew completely secured my ongoing business today. After…read moregetting my oil change, they initially missed a burnt-out left rear brake light because the back of my car was in direct sunlight. However, right as I was about to drive off, a worker spotted it. The service lead immediately let me know and offered a discount on the replacement bulb. Even though the shop was getting busy and the crew was working fast to handle the rush, they took the time to replace it quickly and professionally. Incredible customer service and a great, hardworking atmosphere. I'll definitely be back!

    The last time I brought my vehicle to Valvoline for service, I had my tires rotated. At no point…read moredid the technicians inform me that my tires were severely worn on the inner edges. The wear was so bad that it created a serious safety concern and could have resulted in a tire failure or blowout while I was driving on the freeway. Because of that experience, during my most recent service I specifically asked the technician to check whether my tires were wearing on the inner edges. I was shocked when he told me that he doesn't do that. Afterward, I looked into Valvoline's policy and learned that tire inspections are not part of their service. I understand that now, but I think customers should be made aware of this especially when having their tires rotated. I had assumed that if a technician was removing and rotating my tires and noticed severe or potentially dangerous wear, they would bring it to my attention. If you need anything done involving your tires, I would NOT recommend coming here. Take your vehicle somewhere that actually inspects the condition and wear of your tires. Tires are a critical safety component, and severe inner edge wear can be difficult for the average driver to see. This is a huge safety concern for me. My tires were worn badly enough on the inside that I could have experienced a tire failure on the freeway, yet I left my previous service without anyone warning me. Customers should know that having their tires rotated at Valvoline does not necessarily mean their tires are being inspected for dangerous wear.

    Performance Auto Service & Repair - Control arm bushings blown

    Performance Auto Service & Repair

    (285 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.

    Had to do lots of work -- but these guys again treated me in a fair and honest manner. My repairs…read morewere costly (I have a 2014 so I knew it was time), but they fully explained everything, saved the parts, and did the work quickly and right. Again. This is my place.

    DNZ Automotive - autorepair - Updated September 2026

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