To Whom It May Concern, I am writing to formally report what I believe to be unfair, deceptive, and exploitative auto repair practices by One Stop Auto Service, located at 9409 Rosecrans Ave, Bellflower, CA 90706. On Thursday, January 16, 2026, I brought my vehicle to One Stop Auto Service for a radiator repair. I was charged $1,300.00 for the radiator, an amount I later learned was significantly higher than standard pricing for this type of repair. After payment was made and my vehicle was released to me, the check engine light was illuminated. This warning light was not on prior to bringing my vehicle in for service. I was later informed that the repair had not been fully completed, and I was told that I would need to return and pay an additional $1,000.00 for further work in order to resolve the issue--despite having already paid in full for the original repair. I subsequently took my vehicle to an Infiniti dealership, as Infiniti is the make of my car. I was advised by their service department not to return to One Stop Auto Service, as the repair work was either incomplete or improperly handled. I am a female customer and strongly feel that I was financially exploited and taken advantage of in this situation. At the time of service, I had recently undergone surgery, which placed me in a vulnerable position and limited my ability to advocate for myself or seek immediate alternatives. I am also a local resident in the surrounding community and trusted this business based on proximity. I believe the conduct of One Stop Auto Service demonstrates a lack of transparency, misrepresentation of completed services, and an attempt to charge excessive additional fees after payment had already been rendered. This experience caused me financial stress, inconvenience, and emotional distress. I respectfully request that this matter be reviewed and investigated. I am seeking accountability, appropriate resolution, and assurance that other consumers are not subjected to similar treatment. Thank you for your time and attention to this matter. read more

DO NOT GO HERE!!!!! My mom took her car to this mechanic shop to clear a check engine light and they told her that they needed to automatically replace the radiator to clear it which they charged her over $2000 and the light still didn't go away. Then they said it was the thermostat and did the repair without my moms authorization just because she didn't pick up the phone when she was at work and the check engine light was still on when they did replace it and so when we ask for our money back for not fixing the issue they refused, watch out for this shop Also they're still tryna say that they did get authorization from my mom when she literally has the messages from them asking for permission to install the thermostat and my mom literally didn't answer because she was very busy at work Translation for messages: LUNA, GOOD AFTERNOON, THE ENGINE LIGHT IT TURNED ON ON THE OTHER HAND CODE, IT'S FROM THE THERMOSTAT OCCUPIES TO REPLACE IT MOON THE ESTIMATE OF PART AND LABOR IS $380 TOTAL, PLEASE LET ME KNOW IF YOU WANT TO DO THE REPAIR THANK YOU VERY MUCH AND HAVE A GOOD DAY read more

One Stop Auto Service - Auto Repair Near Me - Bellflower, California

first time at (one stop auto service) and I found people with passion people that care and most importantly people that keep it real ever problem I've had they have been more then willing to help me ASAP! and they get it done correctly. I 100% recommend yall trust one stop auto service. See yall soon with my project build read more

One Stop Auto Service - Because of one stop auto service am able to enjoy my ride - Auto Repair Near Me - Bellflower, California

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Great customer service, staff are friendly. I found my go to auto repair shop! I get my oil changed, brakes and anything else my car needs. The price is good for the service!!!! read more

One Stop Auto Service is the best shop! The customer service is incredibly amazing starting with the owner and the mechanics at the shop. They are friendly, fair and very honest. I have taken my car twice for major work and my car feels like new. I have also taken my two nieces' vehicles and this shop doesn't disappoint with its' quality and profesional service! 10 out of 10. read more

One Stop Auto Service - My car running like new! - Auto Repair Near Me - Bellflower, California

Found my new place for auto repair. They are super professional and Vanessa really takes her time explaining what needs to be done to your car and makes you comfortable. Shout-out to Vanessa and her incredible team. I'll definitely be back read more

I took my car to fix a bad plug and I ask about the service on the airconditioning, they charge me around 200 dollars just to test it , and them.they charged me another 200 dollars to test it again, and my air still don't work, then they called me to tell me hat the temperature sensor needs to be change, that will cost me over 800 dollars, they call me back about two weeks later and told me my pick up truck was ready, when I got there my truck was with the hood open. I ask was going on ? And they say nothing everything was fine, the next day I drove my truck fir about and hour, and every time ai stop or slow down my truck start overheating, I came back to tack to the mechanics and they told, that rhe truck was already fix and whatever happens now it is my fault, and they can check it again but I have to pay 150 dollars more, plus repairs. read more

Shoutout to Vanessa and her crew!! I came right before they closed to get my tire fixed and they helped me out right away. It's always scary to go by myself to auto shops but Vanessa made me feel valued as a customer, thank you guys again! 10/10 service!! read more

I've been coming here for over 20 years and after the new ownership took place I really wanted to keep coming and like this place. After getting an oil change, I noticed oil leaking on my driveway, I looked underneath my car and saw a bunch of oil that wasn't wiped when the oil change was done. I figured it was an honest mistake, went back a few months later and same thing. I got a brake job, 2 months later they were squeeking like crazy, I took it back to them and they couldn't figure out why it was squeaking. I YouTubed how to change brakes and spent $60 did it myself, noticed the 2month old brakes were worn out. So disappointed with them that I will no longer take any of my cars there and the trust is lost. These new owners came in, raised the prices and the quality of work and service is really bad. read more

Being a woman who knows absolutely NOTHING about cars, it's kind of scary taking your car to an auto shop, without thinking employees will screw you over on the prices. But let me tell you something, Vanessa made this whole experience a 10 out of 10! She's so down to earth, and extremely honest. I highly recommend brining your car in for an estimate. I will most definitely be brining my car back for future car service. Thank you Vanessa & your incredible mechanics ! read more

As a recent widow, I was afraid to have to take my 2002 truck in to be repaired. One Stop Auto Service is close to my home and I had discovered they were under new ownership. I was pleased to see a Bible in their waiting room! Danny greeted me and I told him about my situation. He was so honest with me! He also did a GREAT job on my truck. So great that I took it back to him to have some MAJOR repairs done. I couldn't be happier. My truck runs like a dream. read more

@Kelsey ... her name is Candy ... They've really stepped in & are doing a great job since John left ... we recommend them to all of our friends .. we have some drive from Carson & never disappointed!!! read more

These people are crooks. I have been going here for 20 years. They told me one price over the phone and when I arrived and got the work done it was a completely different price. The previous owner Johnny sold his business to crooks. Don't go here they lost my business. read more

I've been here three times now. I mostly go to an auto shop closer to my place of residence that my family has been loyal to for years now. But I'll come here when that shop is too busy, I want a second opinion, or am closer to this auto shop at the time I need service. While it may look chaotic or crowded on the outside looking in, I've showed up in the morning or afternoon and left within a reasonable amount of time every time I went even when there were multiple people who had gotten there before me. I credit that to their speed of service, ability to prioritize jobs well, and effective communication between team members. Whoever takes on the front desk inside has been super helpful and friendly, too, and that's been someone different every time I went. read more

Don't come here. Worse customer service ever! I came in asking for a job on my truck bringin my own parts(Lifting Kit). In front of my face; The OWNER ask the employee "how much do we charge this dude to install these PIECE OF SHIT PARTS ON HIS TRUCK?" He kept using this language the whole time he was referring to me. Then he said 600 for the front and we don't know how much for the rear until we lift the back and see if these pieces of shit fit your truck. I asked for a rough estimate, he said "we don't know, those shits may not even fit your truck." I felt so disrespected and felt like this guy was trying to put me down. I actually walked in there willing to pay the price for this job. I am glad that I got treated this way. It forced me to take my business Elsewhere, unfortunately I found a shop that did the work for me for a lot less. Their attitude is not business oriented, and I don't recommend anyone coming here. The owner is an inaptitude person. read more

My dad referred me to this place. Upon arrival I was ignored. There was no one behind the front desk, had to physically go up to a mechanic working to get someone's attention. Went because my car reeks of gas when I start it in the mornings. Joo told me he doesn't work on my car (Mercedes) well he told my dad he doesn't work on range rovers BUT I definitely seen him working on a Range Rover.. sooo. I told Joo my dad and I believe it's the high pressure fuel pump hose causing the problem. Joo responded "your dad always thinks he knows the problem, why doesn't he fix it then" RUDE. Since I didn't have a check engine light on he said I should check with the dealership because it's no point of running diagnostics w/ no warning light. Went back (my dad talked to them, told me to come in the morning). Waited patiently, still no one addressed me, had to find someone to assist me. Parked my car where I was told too, then a Hispanic man was asked to move my car. I'm trying to explain to him how to move it (it's a lever on the steering wheel) he's ignoring me hitting the middle council module. I'm trying to explain the middle doesn't put the car in drive the lever does! He not listening. I TOLD HIM I'LL MOVE IT MYSELF because you not about to be hitting my car like that! Then Joo gone tell me he doesn't speak English that's why he's not listening. Nah he doesn't care and is ignoring me, that's why he's not listening. I went knowing EXACTLY what the problem was, Johnny looked up under the hood, waved his flashlight around, said he smelled gas & to leave it for a few days and they'll try and see what going on, but no guarantee. I'm not leaving NOTHING of mines here w/ y'all! I was ignored & talked to like I was nothing! Complete waste of time. I witnessed them interact with several other people, NO ONE WAS TREATED LIKE I WAS. Don't recommend. I was trying to save some money, BUT I will gladly go the dealership AND PAY, you pay for the quality of service. read more

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Don't go fix your this shop suck,scam customer ,I dropped my car to fix the transmission they are done my car. I take my car home only two days the engine light come back the same situation I wanna fix at first place. Then they tell me to come back and they give me the new diagnosis transmission 3900, I already paid $2000 for the first place to fix my transmission. Why now I have to pay 3900 more. scammer in the Neighbourhood be aware this shop read more

This place has figured out the slowest and most time consuming way to have your time wasted while you wait for an oil change. It says quick lube, oil and filter and none of this is true. Literally one hour wait to just wait another hour of the guy changing the oil. read more

WOW new owners are pretty messed up, for people who think they don't know Spanish saying I need an oil change and car wash which I didn't think that was professional at all never coming here again read more

Was quoted a certain price and after the labor was done I was charged over $100 more than what I was quoted. I can understand $20-40 difference but over $100 is ridiculous. You can definitely find somewhere cheaper. read more

I have older model cars so bring them to One Stop for all sorts of fixes and regular oil changes. They are the most honest mechanics I've ever dealt with and even fixed a couple things with no extra charge! Yes, when you arrive you sometimes need to wait or find the tech but partly that's because they are always busy and have limited staff. There is no fancy waiting area or greeter person, which is probably why the prices are reasonable. I needed my vehicle back quickly with my most recent repairs and they had it done hours before anticipated. I recommend this repair shop often. read more

My family and our extended families have been going to One Stop Auto for years, but have finally decided to move on. We tried to give the new ownership a chance because of our loyalty to the previous owner, but they have failed in quality, value, and customer service. The timeliness of their communication was really bad on my last attempt here. I dropped off my car before lunch and I had to call to get an update, even then I received an update shortly before closing and I was not able to pick up my car to take it elsewhere. On a previous visit under the new owners, we were given a final cost over the phone, but the final bill ended up almost 50% higher. So sad to see, but all good things must come to an end. read more

use to be a good honest place to go, after the owner retired the staff now charges triple the price. just a diagnosis was $65 on the phone, I show up and it's now $95, I come back ,and it's now $110, come back to pic up my car and it's now $150. crooked people . they lost my business. and 40 minutes of labor shouldn't take 9 hrs to do. that's right ,$500 for 40 minutes I'd work . DO NOT TAKE YOUR CAR THERE read more

One-stop auto service failed to fix the 2 problems that I told them to fix to pass smog check. They fixed 1 problem and then they took it upon themselves to pass a smog check for me without my approval even though they don't have a license to do smog checks. Now my car still has the check engine light after I paid them $1900. Now they want me to pay $3,900 for the second problem. read more

Cheapest place to change the oil in my work truck there fast an really nice they let u know if anything else is wrong with your car but don't pressure u to do any of it!! The guys take note on u so when u come bk they treat an talk to u like family!! I do really love the way they take care of me every time read more

One Stop Auto Service - The sign - Auto Repair Near Me - Bellflower, California

We're do I start . One stop auto has been working on both my cars for awhile never had any problems until I took my work van in for a oil change like always. until now I picked it up and drive to my first job and my coustmer told me there was a large pull of oil under my van on her new driveway. She was very angry never had to worry the van never leaked oil until they changed it. Come to find out that oil plug was put in incorrect. when I got back to one stop the mechanic said it was put in incorrect so I took photos and come to find that there was a large gap on one side of oil plug. so I lost about about three quarts of oil driveing frim my coustmers house to one stop. almost burnt up my motor. once again there was oil again under van in the morning before I went to work. I took it back and this other so called mechanic said he had fixed it. well next morning checked under car again large poo read more

I got my breaks replaced and was charged $360 for labor! I ended up spending over $500 just for breaks!

I've been here several times... oil change, changing some parts of my broken car haha they are friendly and HONEST, they always tell the truth, and do not try to deceive people... believe me. And Johnny drop me off and pick me up in my apt. when he found out I don't have a ride. thank you!!! read more

I stopped by for "glow plug" service to be specific. The female employee stated they charge for a diagnostic check. I advised her that I have the diagnostic check, and it indicates "glow plug" service needed for cylinder 2. I also advised the truck is a diesel engine truck. I asked if they can work on it. She said yes, that any charges for the diagnostic check would be applied toward the service. They kept the truck overnight just to tell me it was a the glow plug and they cannot work on it. Charged me 150 for the diagnostic check. Be advised people, diagnostic checks are now free. You can go to any vehicle parts store to check it for free. Also, the business is under new management. I have been going there since 2002. Johnny was real one. He wouldn't have wasted my time, nor taken my money this way. I've serviced many vehicles there in the last twenty two years. Never going back again. The service I requested they could not do and simply nickeled and dime'd me. read more

Alert !!! I no longer come to this place ! Since johny retired , this place has been a total rip off & bunch of crooks . My entire family would come here, for over 20 years . They overpriced you & all the mechanics are no longer there , since Johny retired ! That speaks volume . I do not recommended anyone to take there car there ! read more

I had been going to One Stop Auto for over 20 years20 years. You could always trust Johny. From an oil change to major work. every time I was going on a road trip, I would go there and have them look over everything to make sure I didn't get stranded. All those years I never got stranded. Last year I went to One Stop Auto because we were going on a road trip, to my surprise Johny had sold it. Since I was already there, I decided to let them work on it. That was a big mistake. I asked them to check everything, also explained to them that my AC was not working properly. It was not working on the 2nd and 3rd setting. I knew all they had to do was change a sensor that is behind the glove compartment. I also explained that the two vents on the driver side occasionally would blow hot air. Once I turned the car off and restarted it would again blow cold air. I asked them to fix those two issues with the car's AC. When I went to pick it up they told me they checked everything and everything was working well and that they had fixed the AC issue. Just for the AC they charged me $300. I get in my car start the AC and setting 2 and 3 do not work. I go to let them know, their response was, we did an AC tune up. An AC tune up is not $300. We went back and forth and got nowhere. As am driving home the two vents start blowing hot air. I drove back and told them, the two issues that I asked you to fix you did not and over charge me for something I didn't ask for. Needless to say, I got nowhere with them. To top it off on our road trip the car over heated because they missed that the radiator had a small crack on it. We had to spend a day of our trip at a radiator shop getting a new one. That is after continuously having to stop and add water to the radiator so it wouldn't overheat, as we drove to the repair shop. It was a 45-minute drive to the repair shop, but since we had to constantly stop, it took us 2 hours. I ended up fixing part of the AC issue myself. After over 20 years of going there and recommending the shop to people, i will no longer go nor recommend it to anyone. Johny is missed, read more

New owners and it all went downhill. I had been taking my cars to this place for years and the owner Johnny was the best! He was so nice, trustworthy and economical. Last time we went found out it was new owners, and they charged us a ridiculous amount and now find that they didn't do the work right. No wonder the place was so empty, no returning customers. read more

I've been coming here for at least 15 years, my father longer. My dad is now deceased so continuing to come here makes me feel good especially since my dad trusted Johnny. Johnny and staff have always taken care of my cars. I learned recently he's retired and called to make an appointment/ask questions... literally the most PLEASANT receptionist answered and assisted me. I just truly appreciated their awesome customer service, I drive a distance to come here and it is worth it. I appreciate ya'll, the prices aren't outrageous. I thought I needed motor mounts (I self diagnosed my car issue via google lol) all I needed was 2 front break pads, they shaved down my rotors and gave details as to why they wouldn't advise replacing, etc. GREAT customer service, the guys have always been pleasant and I'm so happy great changes are happening in the absence on Johnny. THANK YOU ESPECIALLY TO DANNY AND THE SWEET, PLEASANT AND BEAUTIFUL RECEPTIONIST (I forgot her name). read more

Ever since Johnny the owner retired this place isn't the same. The lady working in the office seems nice but besides her the rest are not. I went to get an oul change and got completely ignored so I left read more

Run a business around the area and thought I'd support a local small shop by doing an oil change here instead of big chain place. Pulled up and there was only one car in the bay being serviced, I sat in my car for a few minutes thinking someone might come out, about 5 minutes passed and another car pulled up beside me so I decided to get out of my car so I didn't lose my spot in line since I was there first. Stood around for a few minutes and no sign of anyone except the guy changing oil underneath, he saw me but didn't say a word, about 1 minute later another guy walks by and gives me a wave of "hold on", cool I get back in my car and wait. 3 minutes pass and the guy who pulled beside me decided to leave, I'm committed about 10 minutes into waiting already but I'm patient. The guy finishes the oil change, comes up from the bottom and gets in the car and drives it out of the bay, cool I'm thinking I'm next, thought wrong. He parks the car, hops in another car and pulls it into the bay, gets out of the car and doesn't say a word to me and continues to go change the oil underneath. What the fuck is going on? Am I invisible? So I get out of my car and say excuse me is anyone available to help me, guy says uhh yeah give me a few minutes I'm working on this car. Well no shit I can see that, I decided to leave as I figured if you aren't competent in at least asking me what I need or giving me an eta of wait time, I don't want you anywhere near my car. I'm sure these guys are good and perhaps I just came on a bad day, who knows all I know is this isn't how you run a business, 2 cars were waiting and you lost both business transactions because you didn't take 1 minute of your time to greet the customer. read more

johnny has been my family's mechanic for over 15+ years. he's a man of his word, knows wha He's talking about and very professional. 10/10 would recommend . read more

We've been taking our cars to One Stop Auto Service for over 25 years. Johnny is super honest and has never steered us wrong. There have been many times when we thought we were going to face a very expensive repair only to have him tell us he found the problem and it was not the big problem we thought and was far less than we thought. We've never had a bad experience here and will continue to bring all of our cars to Johnny. read more

Came for a smog check, not familiar with the process. Mr. Yung was very professional, and worked very quickly in and out in 20mins. Highly recommend read more

Great service recommended for a brake job with resurfaced rotors and affordable price. A++++ Thank you. Johnny read more

One Stop Auto Service - Auto Repair Near Me - Bellflower, California

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Get my truck inspection done here as you can't beat the price. Always friendly and will be returning to have brakes done ,