New and used 2026 BMW X3 for sale near Ontario, CA

Salesman Richard helpful and patience and knoledgeable through process

Visited to test drive through Costco Auto program. Monica was prompt in connecting and arranging a test drive. Since she was occupied with a customer, Olya assisted. She was very professional throughout the test drive and purchase of a 330i. Negotiated a fair deal and the following day Olya drove 30mins to our house to sync our phones with the car and demonstrate the digital functions of the car! Great experience from beginning to end

I had a great experience with this dealership. The staff was professional, friendly, and very patient throughout the entire process. They answered all my questions clearly and made everything smooth and stress-free. The car was exactly as described, and the whole purchase process was transparent and efficient. I truly appreciate their excellent customer service and would highly recommend this dealership to anyone looking for a reliable vehicle.

So grateful for Monica—she really cared, understood my needs, and helped me get the perfect BMW.

Dealership service can sometimes feel like rolling the dice. That has not been my experience here, largely because of Adrian Kim. This was not my first visit, and of course, another random issue decided to pop up. Cars have a sense of timing like that. I texted Adrian, and as usual, he handled it calmly and thoroughly. No back and forth, no confusion, just clear updates and actual follow through. He pays attention to the small details, which honestly is what separates good from great. The whole process feels organized and respectful of your time. The loaner was a brand new 2026 model, spotless and ready to go. Almost made me forget why I was there in the first place. Service visits are never something you look forward to, but working with Adrian makes it surprisingly painless. If you are coming to BMW Buena Park, do yourself a favor and ask for him. He makes owning a BMW feel the way it probably should feel.

Adrian made the effort to get my car done. We ran into a few snags however Adrian made everything good again. He goes above and beyond.

I bought my BMW X5 from BMW Monrovia. Monica Perez was my sales person. She did an amazing job finding the right car I needed. She even found and added all the accessories and rims I wanted. If you’re looking for a car see Monica. She will make it happen and you will be highly satisfied with the result on the car you want!

I had a great experience working with Adrian at BMW of Buena Park. He was professional, knowledgeable, and took the time to answer all my questions. The whole process was smooth and easy. I?ll absolutely be recommending him to friends and family!

They were expecting my car and took it in quickly. People there were friendly and helpful. They did the requested work and had the car back to me timely.