Good honest service for your car. Ron is very professional and easy to talk to good communication.

This place is amazing. I went to them to get a quote about a car trouble I had and ultimately didn't get my car serviced by them. Even so, I was given great advice. The owner asked amazing questions and super understanding. They recommended me to go to the first place I got my car diagnosed because they knew the owner, and knew the quality of their work. The owner told me he could fix my car but he wasn't part of the beginning to really understand my car troubles. I felt he wasn't trying to rip me off or give me false information. The owner is a genuine person and wants what's best for your car which I really appreciated! read more

Very grateful for the repair service provided for my car! I spoke to Katie and then Ron by phone about repair recommendations from another shop that was very concerning, and very expensive! I then brought my car in and Ron reviewed my concerns and came back with the essentials I needed which was a big relief to me! My daughter and son in law highly recommended Casners! I am so thankful I brought my car to them and I've already shared their incredible service with my friends! Cathy H read more

These people are insane. They quoted me $190 for a Rideshare vehicle inspection. You have got to be out of your mind

I have been going to Castner's for sometime now. They are so honest that if they quote you an estimate and the work comes in cheaper, they give you the less amount. They also backup their work. I really recommend them. read more

Scheduled a smog check which was completed soon after the appointment time. Cost is a bit higher than some others but service was excellent with no up sale. Certificate was filed with the DMV electronically. By the time I was home, I was able to renew my registration on line. Easy peasy. read more

I've been going here for decades. An honest mechanic with fair prices and always quality work. Everyone that works here is professional and helpful across the board. My only concern is how I will find someone half as good when Ron eventually retires. read more

Excellent service, fair prices. The people that run this business are very nice! Their honesty & helpful attitude really were great read more

Everything! I wanted a simple estimate but the lady answering the phone was rude and disgusting. She was condescending, unhelpful and gave me attitude off the bat for not knowing the correct auto terminology. read more

This place is now our go to for our auto repair and maintenance. We feel that the owners and mechanics, honest and straightforward. They are fairly close to our home, so convenience is also a factor. I have found them to be nearly as expensive as my Toyota dealership. But, they do good work. read more

Trusted mechanic that listens to your concerns. We have been coming here off and on for 5+years. Always feel they provide great service for a fair price. Never feel pushed into anything. read more

I needed to get my truck smogged at a STAR certified location. The whole process took less than 15 minutes, and the staff was very friendly and easy to interact with. I will be going here moving forward! read more

OK, y'all. Do you need a smog check? Well, I've needed two over the past few years and each time I ventured to Castner's and it was a convenient, simple process. I roll up, present my certificate... wait 20 minutes or so... and I'm on my way. This is a locally owned business and is family-run... right in the downtown area of Placentia. Talk a walk across the street and enjoy a quick bite while you wait. They also do also sorts of repair and maintenance work. I'd be glad to bring my car back here for some fixes if/when that happens. Castner's gets five stars and two thumbs up from this Yelper. read more

Andy in the Tire Service department at Sam's Club Fullerton, CA was friendly, fast and informative. Outstanding service. This man deserves a raise! read more

Love this place I have taken my work truck here twice and they don't make up stuff so you can pay a lot of money for something not needed!! Took my truck thinking it was going to be something very expensive that the dealer told me it was because the check engine light went on!!! and castners checked it and it was nothing!! I would have spent over 800 dollars at the dealer and turned out to be nothing!!! Thank you thank you thank you read more

I really like this place. They are professional and really go above and beyond in regards to the services they provide. I am a repeat customer here and I will continue to be. Highly recommend! read more

Quick and reliable service. I would recommend them to everyone. Fairly priced. No place better.

I happened to have a bit of a problem with my car's acceleration. It seemed that for some reason, it was bringing back vibration and noise, every time I'd hit the gas pedal. Didn't know how serious the problem could be, but it didn't look good.... Never worked with Castner's before. Looked it up on Yelp, and saw the positive reviews. Decided to give it a first time chance. Didn't regret it. The guys did a great job on it, and didn't try to sell me any BS. Which especially in these uncertain times, is highly appreciated. read more

I had my 2006 Toyota Sequoia with low mileage towed here after it over heated, the engine sounded terrible and I knew it was probably not going to be good news. I wanted to get some answers for why it overheated and caused damage so quick. I just took a short trip to the grocery store and nothing was out of the ordinary, no sounds, no lights, no steam. I would have to had my eye on the temperature gauge to know that it was happening and who does that on a short trip to the grocery store? Ron tells me that my car was severely overheated and I need a new engine and it would cost me $10,000. I trusted him but I'm not going to just drop 10k without researching so I got a bunch of quotes from other shops for an engine swap and decided to go with another shop that was more reasonable and wasn't going to charge labor for accessories. On the way out I told him I was going with another shop and I asked one last time "are you sure it needs a new engine?" (just looking for reassurance, it's a big decision). This is when it got weird, he said "you're still in denial, you blew this engine, you have to really drive for a long time with a car bagging an popping for it to cause this kind of damage", as he's pointing his finger at me. So if you want to go to a mechanic that implies that you are a liar, troubleshoots the car assuming you abused it, and can't figure out how to call the right number (they said they called me 3 times and left 3 voicemails, still waiting for those), go to Castners. Turns out my engine has full compression in 7 out of 8 cylinders and one head gasket will take care of it. If Ron did a full investigation instead of assuming I destroyed my truck that I love out of negligence he would have found the same thing. Thanks for wasting my time and kicking me when I'm down. On a positive note, they didn't charge me on my way out read more

So glad my neighbor recommended Castner's when she heard about my problems with the dealership and then a bad experience at a drive thru oil change place. The staff at Castner's are polite, professional and honest! Great service and convenient for the local Placentia community. read more

Castners is my go to mechanic! They use top quality and OEM parts and they stand 100% behind their work!

No!!! I will never take my car to any other shop again. Not only do they do great work and, get it done in a timely matter. The guys are all really nice and very helpful. And, Katy in the office is very pleasant to talk with. I give them 10 stars read more

Excellent honest work by a family owned business. Would highly recommend! Did a great job with my neighbors car.

Can't say enough- great service, great prices, very easy to work with everyone at Castners.

I needed a smog test on my vehicle, so I called and got an appointment on the spot. I was literally in and out within 20 minutes. Every one was pleasant and very efficient. Thank you for freeing up my day to get more fun things accomplished!!! I will definitely return for services of this type. I do believe this is a complete auto center and I wouldn't hesitate to take my car here for other services as well. Thank you!! read more

The experience of a friend makes me recommended them. Four not five stars because I've not used them but today added them into my contacts as an auto shop to remember. I liked the way my friend was treated when he had trouble with his Air Conditioning after a minor car accident that seemed to push into the A/C compressor. He was advised a few months ago by the mechanic of several possible causes for the A/C failure. This morning we added some A/C leak detector and noted the air conditioning did not get better, and the clutch within stopped engaging. My friend returned to the shop and reported: "Problem confirmed.... compressor. he took out all freon so ac clutch will not try to engage which could cause seizing up of pulley. No charge. Very professional and friendly." I'm very impressed to rate them with four out of five stars. read more

I called and was able to drop off my car the same day. I was called with a follow up and what was needed a d given a quote and timing on completion. The job was done in a timely manner and the service was great by both office personnel and the mechanic doing the job. We have taken our cars her in the past and will continue doing so for future work. read more

Came in for smog and ended up having to leave my car overnight so they can take a look at my alternator. By the next morning they told me my car was ready for pick up and smog checked. Genuine and kind people/ service. Very helpful and took the time to explain the tests that were done on my car. Definitely trust and recommend. read more

We've taken both of our cars to Castner. We love that they are family owned and they are incredibly helpful. Super glad to have found a mechanic in our neighborhood that we trust. read more

One word, Outstanding! Having multiple negative experiences due to our previous mechanic retiring and selling his business. We were faced with a tough decision to find a new mechanic. The stigma of being taken advantage of, due to lack of automotive mechanics was our biggest fear. Reaching out to our friends, we were recommended to Castners Auto Service. Having our immaculately maintained company service truck having an overheating problem had us reaching out for their opinion and expertise. From the initial inquiry, had us in a position feeling vulnerable due to our work truck being "down". Ron and team were comforting and precise. They reassured us they would get us up and running ASAP. We coordinated our tow with Veteran Tow and had the truck in their hands at 7:30am the following morning. They got to work immediately and updated us regularly. They completed the repair earlier than anticipated and to top it off, they came in under their initial quote. Fair, competent and reliable. Thank you! Do not hesitate to give them your business! read more

All of the reviews are spot on. We're new to the area and one of our vehicles recently just went out of warranty. Of course that means Murphy's Law kicks in and something goes wrong. I called up Castners on a Friday morning and brought it in. They had it diagnosed and repaired by the late afternoon and I had it back the same day. The price was great as well. Just really an all around great experience and I'll be back for any service my vehicles need. read more

Last week we had our 2006 PT Cruiser worked on here. The timing belt and engine mounts had to be replaced. The work performed at the shop was completed in a timely fashion and under budget. in short, they under promised and over delivered. I couldn't be happier. coming from a retired 30 year mechanic, this place is where I get my cars worked on for now on. Thank you Castner Auto Service. This is a very professional and CLEAN shop. ps my wife swears the car has more pep and pickup. read more

This is my first time here. I used RepairSmith for a referral. I will definitely be back. Very nice family business. I came in for stalling with power loss, and a check engine light that kept going on and off. I had previously taken it to a mechanic that I have used for 2yrs, for my old and current vehicle, but I ended up getting charged for something that didn't fix the issue and they didn't even check the sensor that was tripping the code. Castners replaced the sensor and so far so good. They were very thorough with getting info from me as far as how my SUV was acting prior to bringing it to them; as well as what my previous mechanic did to "fix" the issue, and very thorough when explaining what was wrong and how it affects the performance of my vehicle. Repair also cost less than I was quoted over the phone. Very pleased. read more

Great customer service. Great repair service. While working my F150, my other car blew a radiator hose. Swapped vehicles at the shop. Both vehicles serviced and repaired in just a few hours. Thanks Ron!!! Keep up the great work. read more

These guys are a permanent part of history repairing cars in Placentia for more than 60 years. They fix cars right and are honest. I have used them many times and will continue to do so, they do not charge too much but they don't charge low prices that usually mean poor quality or adding things you don't need. These guys know what they are doing, are laid back and really care about you. I consider it a risk to try some of these other shops because they can really be, well... dishonest. read more

Castners is now my place. They are friendly, honest, and pretty fast too. I have tried other places, but now I'll only go to Castners.

Went into this facility to get a smog check on our van, they took me right in and completed the smog check quickly and I was on my way. The staff was very courteous and professional and knowledgeable. I went back a few days later to get some other items taken care of and had the same experience, fast friendly service. They make you feel like your important and they want you as a customer for life......well they have me now. :) Gary W. read more

Castners was recommended to me by my former mechanic who recently moved away. He told me they had great customer service. I can tell you he was not wrong. Castners is wonderful! Great communication and truly honest mechanics. I can't honestly say enough good things about them. It was my first time there and now I will be a lifelong customer! Thank you! read more

I was surprised to see a one star review of Castners. I would have given them five all around. Then i encountered Mary. The reviewer must have dealt with her. Unfortunately, she seems to be a co-owner, but she sure doesn't fit in with the rest of the friendy, honest, competent staff. She is rude, grumpy, and opinionated. She needs to learn to be polite and keep her opinions about people's vehicles to herself. read more

Great service and they are willing to provide inexpensive alternatives to major repairs.