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    Diamond Auto Sales

    4.7 (794 reviews)
    Closed 10:00 am - 6:00 pm
    Updated 2 months ago

    Services - Diamond Auto Sales

    Auto loan

    Car buyers

    Diamond Auto Sales Photos

    Recommended Reviews - Diamond Auto Sales

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    Reviews With Photos

    Adryan D.

    Alex runs an awesome business. He will do what needs to be done to make sure you drive away happy, at the best possible price and most importantly feel welcomed and personable. He's understanding and will do his best to accommodate whatever your situation is! Thanks to the whole team!

    Bithiah R.

    I had a wonderful experience at this dealership. My 20-year-old son was in the market for a specific Acura Integra, and over the past couple of weeks, we had some not-so-great experiences at other dealers. Fortunately, we found the car he wanted at this dealership and completed the pre-approval process online to secure financing. Since we live in San Jose, it was going to be about an hour and a half drive to get there during the week. My son called ahead and spoke with Alex, who confirmed the car was available. When we arrived, Alex was nothing short of helpful and easy to work with. He allowed us to test drive the car on our own, which we really appreciated. Once we got back, the rest of the process was smooth and fairly quick thanks to the pre-approval. Thank you so much, Alex, for your amazing customer service! My son is absolutely in love with his new car.

    Alex at Diamond Auto sales is an alameda legend. Every single interaction we've had with him has been incredible. The man is incredibly generous, professional, kind and respectful. He's helped us with everything from making our child's dreams come true to helping us with new tires. Now we will get his opinion on selling one of our cars. We feel safe in his hands, he's very honest. Not a lot of auto dealers with integrity like him out there. 1,000 stars for Alex and his team at Diamond auto

    Great experience! Alex helped me find the perfect car, set up a test drive, and made the process super smooth. Highly recommend!

    See all

    Photo of Katy N.
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    3 months ago

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    6 months ago

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    22 days ago

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    3 months ago

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    12 days ago

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    18 days ago

    Buying a car from Alex & team at Diamond was the easiest thing I've done all week!! AND I LOVE my new car.

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    3 months ago

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    5 months ago

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    11 months ago

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    3 months ago

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    3 months ago

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    4 months ago

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    4 months ago

    Called ahead for the car, Alex met with me, test drove the car, bought it in 20 min. No BS no pressure.

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    5 months ago

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    5 months ago

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    2 months ago

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    3 months ago

    I had an easy buying process almost a year ago, Alex is still extremely helpful whenever anything comes up. Definitely recommend

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    11 months ago

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    3 months ago

    Excellent service, nice people. We ha great experience very good car selection. recommend

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    8 months ago

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    7 months ago

    Business owner information

    Photo of Alex D.

    Alex D.

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    1 year ago

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    Alex D.

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    9 months ago

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    11 months ago

    Business owner information

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    Alex D.

    Hey Jeff! We are always glad to help. Thank you for the review!

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    11 months ago

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    5 months ago

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    6 months ago

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    2 years ago

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    Alex D.

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    2 years ago

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    Alex D.

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    1 year ago

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    Alex D.

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    8 months ago

    Alex and Julian made buying my car transparent and easy. Really grateful for their expertise

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    2 years ago

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    Alex D.

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    1 year ago

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    Alex D.

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    1 year ago

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    Alex D.

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    11 months ago

    Alex made selling my car fast, easy and fair. He gave the highest offer for my car and was respectful to work with.

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    1 year ago

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    Alex D.

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    3 years ago

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    Alex D.

    Thank you for your business Stefania!

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    11 months ago

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    1 year ago

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    Alex D.

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    2 years ago

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    Page 1 of 20

    Ask the Community - Diamond Auto Sales

    Review Highlights - Diamond Auto Sales

    Just bought a car from Alex at diamond auto sales and would strongly recommend purchasing a used car from him.

    Mentioned in 508 reviews

    Read more highlights

    M Sport Motors - I got a great deal and a great car from Sport Motors!!!!!

    M Sport Motors

    (362 reviews)

    We test drove a 2019 RS3 four times before we decided to purchase it. Brian (the owner) helped us…read morefrom beginning to the end of the process. He was able to answer all of our questions and was a no pressure salesman. He offered us fair market for our car and had the paper work done and keys in our hand in less than an hour. Mark the co-owner was also very helpful with the paperwork. They both stayed after closing to finish the job. We don't need another car, but would have no issues purchasing from M Sport again.

    UPDATE: I sent the picture of the "tar" oil to the owner and to his credit he responded quickly and…read moreapologized. He said that it was indeed obvious that the oil wasn't changed, and acknowledged this was a "miss" by his mechanic. I appreciated this bc at the time I was contending that the oil hadn't been changed, I felt like the "bad guy" when his mechanic was telling us that he had changed it. So I appreciated the call. In any case, this could have been a real problem for me had I not done my own checking and changed the oil myself, and no doubt I would have just been out-of-luck with no recourse. So even if not attributable to malice in this case, stuff can fall through the cracks and I recommend that you do your own thorough due diligence and not necessarily just take everything that is said at face value. ORIGINAL: Be careful and you should buy here only if you know cars or if you have a good mechanic. I came here only because they happened to have a rare model that I was looking for. The owner represented that they had changed the oil after I expressly asked. I honestly didn't care if they did or not, I just wanted to know so I would know to do it. After a cursory check after some driving, it was obvious from the dipstick that the "mechanic" had not. I went back to the dealership to get them to do it. When I returned, the owner swore up and down that his "mechanic" changed the oil, and that he didn't want to ask him to change it again bc then he'd be "calling his mechanic a liar." I said I couldn't speak to whether the "mechanic" was a liar or not, but see can see from the photo what eventually came out when I changed it. So yea, man, your "mechanic" is indeed, a liar. The owner then offered to reimburse me if I went to go change it at Midas nearby. Not trusting a "quickie oil change" place either I asked instead if the owner would just pay me the cost of the oil and filter and I'd do it myself. So buyer beware. They have a decent selection of interesting cars, but you should assume, regardless of what they tell you, that they did not do any maintenance to the car. Unless you are physically watching them as they do it, and even then I'm not sure I would trust them. You will either have to check everything yourself, or take it to your trusted mechanic. The one thing that is good, is that the salespeople seemed like decent enough people, but definitely are not thorough or take proper care in what they are doing. For 90% of buyers who don't know anything about cars they can probably get away with their behavior. But I'd recommend that you only buy here if if you really know your cars and know exactly what to check.

    Diamond Auto Sales - usedcardealers - Updated June 2026

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