Customer Testimonials
I don’t love change, so when I relocated to the Monrovia area, I was hesitant to switch dealerships. I made an appointment here and honestly tried to find reasons why it wouldn’t work out. I’m happy to say I was completely wrong. David, my service advisor, was amazing. He was incredibly helpful, handled all the calls regarding my warranty, kept me informed every step of the way, and was genuinely polite and professional. With it being the week of Christmas, I know everyone is eager for the holidays, so being treated with such kindness and care was ... Read More Google - Dec 23, 2025
Great customer service experience. David was very helpfull explaining my car service.
We had are car 2025 QX60 serviced by them for the 1st time. Ernesto Flores did an excellent job assisting us and keeping us informed throughout the whole service while we waited for completion, as well as the rest of the team. The car came back very clean as well. I highly recommend this dealership for servicing your INFINITI. Thank you INFINITI of Duarte!
Thank you for your service!
David was an excellent help. I didn’t have an appointment and showed up on a Friday morning. He was quick to check me in and asked what services I needed. My check engine light was on and he recommended they run diagnostics to determine what the issue was. Turns out my spark plugs needed to be changed. He was very kind and patient when explaining what needed to be fixed. Ended up waiting a few hours for the job to be completed. They partner with Uber and I was able to get a ride to a coffee shop nearby ... Read More Google - Nov 26, 2025
Recently had a transmission value service at Sierra INFINITI of Duarte. I had called around to get prices and the price I was quoted here was reasonable for a dealer. I got much higher quotes at other INFINITI dealers. David Gomez helped me and he was great. They gave me a Uber to and from my home. The only issue was they charge 3% for using a credit card and it was not mentioned before I arrived to pick up the car. I could have brought a debit card for a bank account that had a sufficient balance.
I took my car in because of the ECM recall and decided to get an oil change and a tire rotation. When I picked up the vehicle, the service rep told me that the check engine light came on after the software update and the code P06DA appeared stating that there is an issue with the engine oil pressure control.
I had taken my car in June of 2024 for service and had a significant amount of repairs done that totaled to over 4k. I believe that issue with the engine oil pressure is due to the service back in ... Read More DealerRater - Mar 4, 2025
The Service Department on point! I Requested an appointment online, easy to do. I was welcomed at my arrival and had a minimal wait for the service I requested. Ernesto Flores was very helpful in making this float along. Thanks for your attentive and professional customer service.
Tony Sandoval did a great job getting all I needed done. I appreciate Tony's help and attention to making sure he provided me with all the information I need. I will recommend Tony.
Super friendly, relatable & professional!
I arrived 25 minutes early with no appointment. David Gomez did not wait until service department opened. He immediately attended to me assuring that I would spend the less time possible at dealership and have more time in my day for other appointments. First time visiting this dealership. The previous INFINITI dealership I frequented closed down. Thanks to David Gomez I will return to this dealership.
Great service. Guillermo Murillo was a big help with our fantastic new Nissan Rogue. I highly recommend Sierra Nissan.
Easy sale no high pressure sales tactics no hard sale moves from Guillermo Murillo. Very helpful worked with what we were looking for in payments.
I am very satisfied with the customer service, I received at Sierra INFINITI of Duarte. I was treated with a lot of respect and will end up purchasing my next vehicle at that dealership. I especially appreciate Monique Esparza, for her profesionalism to help me repair my new Nissan Frontier truck.
Service advisor Monique Esparza was very knowledgeable and helpful. All service was done as promised. Thank you Monique
Guillermo Murillo is easy to work with and answered all are questions. He made the process smooth. We would definitely buy another car from him in the future.
Monique was courteous and friendly
I recently had my Q50 serviced at Sierra INFINITI. I was a bit hesitant because my car had only been serviced at Cerritos INFINITI but since my service advisor left, my experiences were disappointing at Cerritos. I'm glad I tried Sierra INFINITI. David Gomez is amazing. He is very courteous, pleasant, knowledgeable & professional. He thoroughly explained & suggested upcoming maintenance to ensure the vehicle continues to perform in prestine condition. Thanks David, you're great!
Veronica rios was great help. Go dodgers
(Translated by Google) Several service staff are very patient (Original) 几个服务人员都非常有耐心
On my way to a meeting iI experienced car trouble that forced me to pull over. I was given the option of taking my car to a nearby repair shop. I chose to take my car to the dealer as I like to keep my car service with a warranty to avoid future problems. Once I contacted Veronica she was very helpful and was kind enough to not only keep in touch during repair but she handled the process until I picked my car up from service.. Thank you Veronica...
Very good service, thank you Veronica Rios
Great service, Veronica Rios was so knowledgeable and helpful.
Veronica provided exceptional service and a great experience. My car needed servicing for multiple days and she provided a Lyft to pick me up from work AND gave me a loaner to make sure I was without a vehicle. She kept me updated with what was going on with my car, and the service was fast and my car was returned to me in a timely manner. Thank you again Veronica!
Veronica Ríos gives the best service. She communicates well and is extremely helpful in making sure her customers are satisfied. Give her a raise.
Had an excelent expeience! Veronica Rios was very pleasant and provided me with excellent service and updates on the process of my vehicle. I will Glady return if any further issuse arise with my vehicle. Thank you very much!!!
The service on my INFINITI G35 August 14 2024 was very good. I am grateful particularly Ms Veronica Rios who was my service consultant.She took care of all problems with my car in one day, answered all my questions calmly and patiently - everything, as always, in nice, comfortable atmosphere.
I’d like to preface by saying my disappointment is not toward my service advisor, David Gomez, he gets 5 starts as he was efficient, personable and kept me in the loop, but rather toward the dealer itself. I’ve been a loyal customer of INFINITI, even throughout the numerous ownership changes, but will probably take my business elsewhere as they now impose a fee for credit card usage. This amounted to an extra $38 on top of the $1200 repair bill. While, I understand the cost of doing business is expensive, however imposing this fee is one way to lose business and ... Read More Google - Aug 20, 2024
Very kind and responsive. Validated everything I had to say rather than putting me off. Would come back.
Veronica rios is always the best, she always manages to get me in and out within a timely manner. Probably the best service advisor I've ever encountered!
Excellent service, very professional and Mr. Jonathan Jimenez at Sierra INFINITI of Monrovia is the best. Jonathan is very honest, good listener, knowledgeable, respect my car, which means a lot to me. Please let me extend my gratitude, respect and appreciation for Mr. Jonathan Jimenez who did an excellent job working on my car. Also Sierra INFINITI of Monrovia Service Center definitely is a friendly, nice place to go.
I recently enjoyed working with David Gomez at Sierra INFINITI of Monrovia. I was thoroughly impressed with his service level. David went above and beyond to ensure that my concerns were thoroughly addressed and that I was delighted before closing the case. He displayed a remarkable level of attentiveness to detail and ensured that every aspect of my issue was handled professionally and timely. His expertise and field knowledge were evident, and I felt confident and comfortable in his abilities throughout the process. I highly recommend David Gomez and Sierra INFINITI of Monrovia to anyone needing exceptional customer service. I ... Read More Google - May 6, 2024
Benjamin Gutierrez was my service manager. He was super friendly, helpful and fast. Great representative of the dealership in terms of customer service and building trusting relationships with repeat customers!
I had a unique, great experience with Veronica Rios at Sierra INFINITI. She went the extra mile as soon as she came out of her office to greet me by explaining to me her knowledge of my Q50S. Well done.
Ben helped me and saved the remote key fob! Thank you very much Ben! You're an awesome service advisor! Appreciate you!
Benjamin Gutierrez was great in handling my visit for repair service. Very professional, and able to explain all the work completed as well as what work is critical to complete soon.
Came in and was helped by Cam & Mira. Very nice, very knowledgeable & worked really quick. We were very happy with everything.
Amazingly quick service. We were in and out in less than an hour, as a walk-in and that included the oil change, washing the car, and putting on my license plates. When I used to take my car to INFINITI of Ontario minimum time for JUST oil change was 4-5 hours with an appointment! I LOVE the staff and service at INFINITI of Monrovia. They always go above and beyond!! Benjamin was awesome!!
I got my car serviced here and had a great experience at Sierra INFINITI. They honored my urgent request for same day appointment. I appreciate their commitment to making customers happy. Special shout out to Jonathan Jimenez for helping me with my car throughout the process. Highly recommend!
I received top notch service from Benjamin Gutierrez. In addition, the waiting room is very nice with premium coffee and bottled water. The prices for service are very competitive and Sierra offers great coupon and discounts.
The service was very well taken care of and Benji only recommended what my car needed at this time. The check in process was easy and fast.
I’ve had the pleasure of having Jonathan Jimenez be my service advisor several times now. He has been able to make everything go as smooth for me as possible . He has gone above and beyond especially this last visit while supporting me with barriers that have come up related to the extended warranty. He has always been respectful and friendly and I truly appreciate the kindness especially when the last thing anyone wants is an unexpected car issue to arise.
Sierra INFINITI has giving me the best experience/service overall with any other dealerships I’ve dealt with. They (Benjamin G) are fast, attentive and the waiting process ain’t a bother when you they offer a comfortable waiting room with a coffee and tea bar. The cleanliness is at a 10.
Iam very happy with the excellent service I received from Sierra INFINITI of Monrovia Benjamin Gutierrez was my service representative .
They were very straight forward with processing the purchase of the new car, not much hassle and very willing to work with me. Guillermo was very responsive and very transparent about the options and the price of vehicle. Mira was who helped me finalize the paperwork and was very informative and kind, very pleasant exeperience. The only thing that threw me off a little bit was the walk-in to walk-out time was a little bit lengthy, but to be expected when buying a car.
When I come in to get my old 2011 Infinity serviced Jonathan Jimenez is always welcoming and helpful as if I just bought my car. He listens to my concerns and gives the best advice for my budget being everything is so expensive nowadays. I really appreciate his honesty and generosity. If I had the extra cash coming in I would definitely purchase a new car at this dealership.
I came into Sierra INFINITI for an motor oil and rear differential oil change.Jonathan Jimenez gave me great customer service,I did not have to wait long for my service to be completed.Thank you !Jonathan Jimenez
We were really happy with the service that Jonathan Jimenez and Sierra INFINITI gave us and our 2014 INFINITI during our recent car service. The car has over 100k, but we love the car. Jonathan was friendly and clearly explained the servicing that was scheduled and other items we needed to be done and why. Car service was done ahead of schedule and runs great! Thank you Sierra INFINITI and Jonathan!
Veronica Rios was great! Service was great! Thank you!
Benjamin Gutierrez was extremely helpful and professional. He helped my trip to get my car serviced be quick, easy, and headache-free.
Very pleased with Benjamin Gutierrez who continues to meet my expectations. Very informative and attention to detail. My car was due for a maintenance and Benjamin was hands on. Thank you for your continuous support Benjamin. Great customer service.
Benji Gutierrez was great. He communicated clearly and delivered as promised.
Johnathon was very attentive and professional
Benjamin Gutierrez was very kind, helpful, and professional. He answered all my questions and kept me updated.
Service was excellent and Benjamin delivered on his word.
I walked in to get my car service without an appointment and Ernie Flores has taken care of it very quick. Highly recommend the service at this location.
Jonathan Jimenez was the service person. He was polite and treats you like family. I really appreciated it thank you so much
I had a great experience having my car serviced due to the superb customer service professionalism provided by Benjamin Gutierrez of the Service Department. Benjamin was very helpful in getting my routine service maintenance done efficiently, along with diagnosing some minor mechanical issues I had. He immediately ordered the necessary repair parts for the repair and made special efforts to insure I had transportation while my car was being repaired. I have been coming to this same INFINITI dealership location for over 15 years for service. However, when the dealership changed name and ownership twice recently, along with different staffing, I ... Read More Google - Dec 24, 2023
Benjamín Gutiérrez was very nice & helped me with my car’s questions and concerns..
I made an appointment with my service advisor Jonathon Jimenez. He greeted me and discussed the service I had requested. I also needed brake assessment and Jonathon added it to my request. He offered a ride if needed and gave me an update on the services being completed and when the car would be ready. He was friendly and very professional. The waiting area is comfortable, clean and water and coffee are complimentary. There is also a vending machine for snacks available. This is my go to dealership for service.
Jonathan Jimenez in the Service Department was very personable/friendly, professional, and answered all my questions regarding my car's needed service. I would definitely recommend Sierra INFINITI and seeing Mr. Jimenez when you take your INFINITI in for servicing. He is the BEST! Thank You!
Benjamin Gutierrez continues to do an awesome job. I live in Fontana and will continue to bypass INFINITI of Ontario for Monrovia for their professional and quick service.
Benji for the win! Great customer service and cool guy! 👍🏽
thanks again to the Sierra INFINITI service team (Jonathan) for the amazing customer service
Benjamin Gutierrez is always a pleasure to work with.
Very happy with this dealer. Service advisor Jonathan Jimenez gives me the best service. He always updates me with the status of my vehicle and makes sure that my concerns are being addressed
Benjamin Gutierrez was very understanding and pleasant. After completing the service on my car. He explained everything that was done and then he flipped the paperwork over and show me that my car was in great shape. He advised me to continue with my service appointments and to keep coming back to the dealership. I appreciate the service that I get at Sierra Infinity.
I have been having my QX60 Hybrid car serviced at Sierra INFINITI in Monrovia for at least 4 years now. I am so happy with their service on my car AND Customer care service. They are to notch and I especially appreciated working with Benjamin Gutierrez. He was very helpful at getting my car in quickly and serviced so I could be at another appointment that day. He went above and beyond to make that happen. Just wanted to thank him again and INFINITI of Monrovia for great care and service.
Jonathan Jimenez was very efficient and a pleasure to deal with. He answered all our questions and our service was completed expeditiously. We look forward to doing business with him in the future. We really appreciated the great car wash too!
This was my first encounter with purchasing a vehicle and I couldn’t have asked for a better experience. Not only were you helpful but you were very relatable, respectful and a pleasure to talk to. I couldn’t be more thankful and I am extremely satisfied with this experience and your service. Thank you
My car needed routine oil and tire service. I knew that it might also need some service on the brakes. Veronica Rios took very good care of me and my vehicle. The needed services were performed. All of the coupon discounts were made. I had a loan car while my car was being serviced. This is an important benefit to me.
They have a very qualified costumer service department, very helpful and knowledgeable. Well organized and friendly, I am very happy & thankful to do business with you guys .thank very much .
Edward Gutierrez is always amazing and over exceeds expectations. He seriously cares about his customers
Duarte Nissan worked to meet our needs Johnathan & Fred went above and beyond to make our purchase smooth.
Service is very good. Demian the salesman is very helpful and knowledgeable. The manager Marwan was very welcoming
Everyone has always been so helpful and courteus, especially Felipe. The person answering the phone was helpful too.
Gracias Edwood y Felipe. Porfa les dan las gracias al technico. Los vemos in 5 meses para el servicio.
Great service and friendly staff and minimum wait. My car runs great and Nissan always keeps my maintenance kept up
Edward Gutierrez always exceeds my expectations and makes sure my car is done right thanks
I can’t begin to express my appreciation for Imad and Marwan. They were incredibly diligent, patient and made a milestone moment of buying my own car, even more memorable. Nissan of Duarte is the place to go!
I am always satisfied with service at Nissan Duarte. Excellent customer service and Cesar is always courteous and professional.
Very attentive and knowledgeable about the questions that I had. Always friendly and considerate of my time and never tries to over sale.
Great place amazing people wonderful customer service would recommend to everyone looking forward to purchasing my second vehicle with them
Scammers and liars, they don't even try to help out their customers, What's worse it's that the GENERAL MANAGER is the same as his employees, I REGRET buying a car with them.
Felipe is great service rep, he exceeds my expectations. Great guy and easy to work
We struck a deal, shook hands and were prepared to pay in full. I left my girlfriend there as I had to get back to work. She called me a half an hour later, from the finance office. They were insistent that the deal we had just made and shook hands-on was not correct and that we owed another $2000 - absolute xx. I've been buying cars for a long time. I've had many many of them and I've never encountered practices this deceptive and just plain shady. At the end of the day, after four hours of ... Read More DealerRater - Oct 11, 2023
Outstanding dealership! Transparent pricing, knowledgeable staff, Seamless financing. Exceptional service department. A top choice for your next car purchase.
Very low interest in selling a car. We went with cash offer and was constantly left waiting.
Courteous customer service, efficient, items met on requirements of service on car. Safety first! Thankyou!
Hospitality Friendly describes Felipe Gaytan he’s just great I won’t go anywhere else.
Edward G. is amazing. very professional and well-informed. Appreciate his explanations and patience for clarity. He has great customer awareness and service.
I traded in my car at $1500 and put $5000 down on a car they quoted me for $16,000. Walk away with my trade and down payment should have been around $11,000 with taxes. The guy changed my contract 3 times and the last time changed the loan amount to $25,000 on a used car that was already 4 years old….I contacted Nissan several times and no one would help me fix the issue. They said since I signed it they would not fix it. I will never return there
