I purchased a 2018 Volkswagen Jetta from quantum auto sales on August 20, 2022 on August 23. All of the lights on the dashboard came on and they contacted the office I was told I would be called back. No one called me back I texted my sales person directly and no text reply. I ended up taking my car to my mechanic who fixed everything for $800 now on. December 14 I was driving to Las Vegas for the Marine ball when my car would not accelerate it over 15 miles an hour I made it to Las Vegas I then had to have my car towed to a AAA dealership. I paid $100 for a diagnostic they said that the transmission was faulty and then it looks like it's been faulty for a while and then it burns oil mind you I've already made to oil changes on the car, anyway I had to have my car towed from Las Vegas to San Bernardino because that's when I ran out of money costing almost $1600 for the tow. I have called quantum auto sales multiple times about this with no reply they just keep telling me to call the service center. I called the service center and everyone is out of the office. I paid $22,995 for this car and I've had it almost 4 months and now I'm been told it's going to cost almost $8000 to repair the transmission. They knew that this was a problem and they sold me this lemon of a car. I called back days after that it had Issues, I've had a little to no help from anyone in the office. If you buy a car here you will be scammed. I am not in a position now to make payments and repairs on a 2018 car this is totally absurd. They completely use people and sell you cars. I actually went to the dealership set up the purchase of a different car and when I got there, they hard sold me this one because they knew I needed a vehicle to get to work Telling me just 30 minutes before you arrive that they had the car originally wanted that I got an approval for anyway it's been a bad experience from the beginning and the fact that nobody will even call me is ridiculous and I'm just trying to find out at this point how to get my $4000 down payment back because $4000 +1600+800+ a regular payment for the last four months seems totally ludicrous and should honestly be Shut down these people are scam artists. Every time I call, asking to talk to a manager there's nobody they can talk to me I'm beyond upset, especially with the economy the way it is every dollar counts, so sucking all of my money and credit into one vehicle, to save my credit, and to keep paying for a lemon of a car to save my credit is completely wrong. They are taking advantage of a young woman because they know that I don't know what to do about it so if you want to be stuck by a car from these jerks. read more

I could give more starts if I could . I search online for dealerships and i notice Quantum Auto Sales had a Special Sale which catch my Eye so I had the opportunity to meet one of the salesman Mr. Panduro via Facebook who I explain I had bad credit not much downpayment and I asked him is it possible for me to get a car no matter I had a bad history credit he was so sure I will get the car that convince me to go drive 1 hour and half just to look for a car . Even tho I was like are u sure coz I don't want to go drive all the way there for nothing and neither ask for more downpayment coz I don't have it So I finally decided to go just to see if it was true what Mr. Panduro said . For my surprise I was very happy to see they had good inventory and everyone was very kind and nice towards customers. Finally met Mr. Panduro and I could only said thank youuuu . He made me feel like home and had the patient and time to show me around their 3 dealers and I was able to get the car I need it and even newer year than i expected with a great payment plan . Thank you Quantum Thank you Mr. Panduro and everyone who made this Sale possible and put a smile in my face . I will definitely recommend this place and refer friends to take the opportunity and visit Quantum auto sale . Gracias You guys are the best read more

Okay so we meet up with Rudy our sales man he sold us a 07 escalade. The truck seemed to be in perfect conditions exept for some missing bottoms and a tear in a storage bag. They fixed some of those problems. I called them two day later telling them that the engine was making a nosie as if the engine supports were not there. And some paint was damaged on the doors. I took the truck in for a whole week and they said they would fix all the problems. As am driving to my house the engine kept making that same noise again. I called and they said that they had fixed everything that there was nothing to worry about. This came from the service manager thomas. I took my vehicle to my mechanic and he checked it out and found out that the enginw supports were totally unusable and unsafe. I gad to fixed those supports as it was un safe to drive. It cost me almost $1000 to fix it. I took the used supports to the dealership and they all looked suprise that they didnt fix. Also they sent me a registration that was due 4 days later. I was promised that i was going to get 2016 registration i even payed for it. They also lied about it and i had to pay $430 to get the tags. Just in my opinion try to look for another dealership that wont lie as much as they promise. read more

Quantum Auto Sales, is the BEST DEALER of cars that I've found with EXCELLENT CUSTOMER SERVICE. I bought my last 3 cars and believe me "like brand new", We know that the cars are used and one day my second car had a fault but, Jorge Lopez gave the instruction to be repair and the car since then has worked perfectly, I am very satisfied with the friendly and cheerful disposition of agents. I referred people because I think Quantum autosales is the best dealer of all, they have all the models, trades and the cars are like new and above all, is THE MOST HONEST. My friends are super happy with their cars because they got them with really cheap price, and although they had not much money for the Down Payment and some of them with bad credit, but Jorge Lopez with the generous treatment all the time help the people and he always with a smile said "Let me see how I can help you" Special thanks to Jorge Lopez (you are the best) and enormous gratitude to Mr. Bassil Boulus for the great help to get a better car every time. I can say that Quantum autosales is synonymous with professionalism and decent treatment. THANK YOU VERY MUCH!!!!. read more

I bought my 2001 porsche boxster from this dealership. I test drove it. I found a couple things that weren't right. When I told the salesman he wasn't sure if he could do anything about it. I wouldnt buy the car unless these things were fixed. The owner of the dealership came out and spoke to me. He told me that he would fix the problems. I was surprised. When I brought it back to be fixed the dealership gave me a loaner that was comparable to my boxster. I was very happy. All dealerships have bad reps. It goes with the territory I guess. All I can say is buying experience there was great. They have alot of popular cars to pick from. Im very happy with my boxster and its the hottest one on the road if you ask me. Lol. Anyway they can get anybody financed. Trust me on that one. I purchased it about 2 years ago. Im a little late on the review but better late then never. Im going to go see them in the next couple of days to trade my porsche in for a CST. My name is chris Steffey and im a real customer and no one paid me to do this. Im truly happy. read more

DO NOT BUY A CAR FROM HERE!!!! This dealership will tell you that they will finance anyone, but will want at least $3000 down. We purchased a car from here, DMV charges were overpaid by $300 but our tags were $15. We drove off the lot, and after a week we smelt a burning smell, took car in and they said nothing was wrong. A month later, electric fuse box goes out. We paid $300 to tow it back to dealership. Dealership customer service person was rude. Dealership fixed issue, but refused to reimburse us for tow, even after we had reported a smell. Dealership then agreed to reimburse us half of tow charge and when we went to pick up car, owner said rude comments to us, and sales manager then got rude and ripped up check in front of us and threaten to take the car back!! DO NOT BUY FROM HERE, BAD CUSTOMER SERVICE, AND THEY WILL RIP YOU OFF!!!! read more

On 03/03/18 I went to Quantum to look for a small car. I was assisted by Jerry "El Chilo". He was very professional, very courteous, and answered all my questions. I didn't feel rushed or taken advantage of in the least. I had a 1998 Ford Explorer that was literally on its last legs, in my opinion. I didn't think I was going to be able to trade it in but surprisingly they took it which really helped with the down payment. I had been following Mr. Jerry since last year, via Facebook... looking at all the cars he would post and knew that when I was ready to take the leap in getting a new car, I would be going to see El Chilo. He is the best- I would definitely recommend going directly to him. Thanks Jerry!!! read more

Spent the morning looking at dealerships down Harbor. Stopped at Quantum and saw a pretty red Nissan that caught my eye. Ivan was helping and made it so painless. I told him how much I had to put down. The process what's quick & easy. Ran credit, he showed me the breakdown of EVERYTHING so I understood what I was going to be paying for! It also did not take long to get approved seriously less than 15 minutes. I also told him what my budget was and he hit it right on the dot. Perfect car, perfect service. I am so exited for my new car. read more

BEST DEALERSHIP IN OC!! I went to a lot of dealerships and they wanted 5 $5000-$6000 down for the Challenger i was looking for. I went to Quantum Auto Sales at 324 S Harbor Blvd in Santa Ana and they were the best! Very knowledgeable staff and the manager was very helpful explaining my contract to me.And i sent a couple of friends and they gave me $$$ for sending my friends to get helped out!! I didnt feel pressured at all to buy a car and they took their time and showed me all my options!! Great place to buy a car!!! read more

Made a purchase of a 2014 Infinity QX 70 with an extended warranty from salesman Jesus Ibarguen. Initially he made a good impression however as the night went on it only got better. We ran him all over between lots looking at different models and he was ready, willing and able with all of the required information easily available at a moments notice. We are very pleased with our experience and highly recommend doing business with Jesus. We will be referring friends to him when asked. read more

I am very pleased I went to 3 different dealerships and everyone kept turning us down. I spoke with Gordo where he told me he would help me out. I live 1 hr away and he told me if he was not able to get me in a truck he would give me 100 dollars. We came down and Gordo made it happen my husband is a first time buyer with challanging credit and got us in a 25k 2016 Dodge Ram with 3k down. Thank you Gordo and your staff. You guys are the best and will be referring people. read more

Very friendly staff and very helpful!! Shout out to Jesus, El Chuy in particular!! He was so nice and helpful in helping me choose a car! Would definitely recommend this place to anyone looking to buy a vehicle with very little down.. first time buyers or people with bad credit like myself!. Ask for Jesus I am telling you this guy knows how to treat his customers.. Ive always said it's the employees that allow a business to succeed.. thanks again for the help Jesus. read more

This review is for Mr. Juan Escobar and his AMAZING customer service. From the moment I walked into Quantum Auto Sales he showed much interest in helping me find the perfect car. He was very attentive to what I was looking for and he answered all my questions in much detail. He has a lot of patience and definitely wants his customers to feel happy and satisfied. Definetly recommend him for all your car shopping. Ask for him, you won't be disappointed! read more

They sell me a bad car with transmission problem , they never help me to resolve the problem , I'm went to the dealer to fixing my self and now they don't want reimburse the money o expend . I'm totally no recommend those gamut's play with people . Especially the famous gordo and his team I'm so sad cause they make me expend 700 $ totally that's not a good dealer , that don't know what theory doing , no one is profesional read more

buying a car from jesus was quick and easy he showed me the cars that were in my price range that i asked for and he did i love that he doesn't go around in circles instead he goes straight to the point which i liked because he gave me all the information i needed to make my decision. over all a very professional adviser that is not at all pushy to make a sale he generally wants to help you find the car you need. read more

They keep deleting my review but ima keep posting it!!! Lmao lames anyway don't come here!!! They are a scam!!! They sell you cars with problems!!! I got my car with them and I don't even have half a year with out and I had to get a new battery the battery that was in the car wasn't even the correct one for it!! I had to get a line up for my tires too!!! If you see the bad reviews don't even waste your time here read more

la experiencia con este diler fue algo súper compramos una camioneta para 8 pasajeros el vendedor se portó súper profecional nos atendió exelentemente algo que nos gusto mucho que sin preguntar ni nada nos consiguo un interés bien comodo con un pago que cualkiera puede pagar si algún día usted kisiera comprar un carro camioneta o suv vaya a quantum de primera y harbor pregunte por jerry el chilo 714-391-7409 read more

We were so surprised at the excellent service we received from Mike at the Santa Ana location. We were ready to buy at CarMax but went over to Quantum to check out a truck. The entire experience was very pleasant and easy. Mike gave us a fantastic price that beat CarMax and an interest rate nearly 5 % better! Mike you rocked it. Thanks for taking care of us. Tell your boss he should give you a raise. read more

This dealership is the best I've every gone to yet !!Jerry El Chilo is the man to go to !! Best customer service yet !! Even with my bad credit he work around to get me the car I wanted for the price I wanted went above and beyond to make sure he gave me different option before I'd purchase the car !!! Hands down on professionalisms!!! 2nd car we purchase with him on less then 6 months !!! read more