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Jonathan DeSimoni
Jonathan DeSimoni at Diamond Chevrolet of San Bernardino
Refer Me

Jonathan DeSimoni

Internet Sales / Fleet Manager

Diamond Chevrolet of San Bernardino

909 W 21st Street
San Bernardino, CA 92405

Contact Me
4.9
97 Reviews

Dealership Experience

5 yrs, 9 mos

Industry Experience

21 yrs, 11 mos

Specialties & Trainings

Certified Top Performer 10+ Years

Chevrolet Mark of Excellence Award Winner 10+ Years

View more specialties & trainings
4.9

97 Reviews

Write a Review

97 Reviews of Jonathan DeSimoni

April 17, 2025

Dealership Rating
Employee Rating

Quick and efficient friendly process Wonderful experience Took the time to make sure we understand everything More

by aurorameza7685
Recommend Dealer
Yes

Other Employees Tagged: Jonathan DeSimoni

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Apr 17, 2025

Diamond Chevrolet of San Bernardino responded

Thank you for your wonderful review! I'm thrilled to hear that you had a quick, efficient, and friendly experience at Diamond Chevrolet of San Bernardino. Our team is dedicated to ensuring that you understand everything, and we appreciate your kind words. We look forward to assisting you again in the future! Best, Israel Mora (909) 883-8833

April 04, 2025

Dealership Rating
Employee Rating

It was a pleasure buying from Diamond Chevrolet. Jonathan and Elizabeth were great to deal with, very informative. More

by kevinsliger63
Sales Price Transparency
Purchase Time
Finance Experience
Recommend Dealer
Yes

Other Employees Tagged: Elizabeth Ornelas, Joseph Gotti

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Apr 04, 2025

Diamond Chevrolet of San Bernardino responded

Thank you for your wonderful review! We're thrilled to hear that you had a great experience at Diamond Chevrolet of San Bernardino and that Jonathan and Elizabeth provided you with excellent service. We appreciate your feedback and look forward to seeing you again soon! Best, Israel Mora (909) 883-8833

March 30, 2025

Dealership Rating
Employee Rating

It was quick, and easy. Everyone we interacted was nice All the staff at Diamond Chevrolet was attentive, helpful and respected our time. More

by zein.chanel
Recommend Dealer
Yes

Other Employees Tagged: Jonathan DeSimoni

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Mar 31, 2025

Diamond Chevrolet of San Bernardino responded

Thank you for your wonderful review! We truly appreciate your kind words about our team at Diamond Chevrolet of San Bernardino. We're so glad to hear that you found the process quick and easy, and that our staff was attentive and helpful. We look forward to your next visit! Best, Israel Mora (909) 883-8833

March 25, 2025

Dealership Rating
Employee Rating

If you’re looking for a good place to get your car serviced fast and hassle free. Diamond Chevrolet is the best choice. The service advisor are well knowledgeable and friendly. More

by Jesse.ruiz069
Service Price Transparency
Workmanship
Service Time
Service Communication
Recommend Dealer
Yes

Other Employees Tagged: Timothy Kubo, Jeramie Diaz, Max Moreno , Julian Paco

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Mar 26, 2025

Diamond Chevrolet of San Bernardino responded

Thank you, Jesse! We truly appreciate your kind words about Diamond Chevrolet of San Bernardino. It's great to hear that you found our service to be fast and hassle-free, and that our advisors made your experience enjoyable. We look forward to seeing you again for your future service needs! Best, Israel Mora (909) 883-8833

March 23, 2025

Dealership Rating
Employee Rating

Jonathan was amazing and very comforting and duc from financing was very nice! Appreciate you! Amazing experience More

by everythingeverywherex5
Sales Price Transparency
Purchase Time
Finance Experience
Recommend Dealer
Yes

Other Employees Tagged: Luis Rojas, Timothy Kubo, Duc Nguyen

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Mar 24, 2025

Diamond Chevrolet of San Bernardino responded

Thank you for sharing your experience and for the kind words! We're thrilled to hear that you had an amazing time at Diamond Chevrolet of San Bernardino and that both Jonathan and Duc made a positive impact during your visit. We appreciate your feedback and look forward to serving you again in the future! Best, Israel Mora (909) 883-8833

March 22, 2025

Dealership Rating
Employee Rating

The salesperson Jonathan was very patient and was very knowledgeable about the vehicle he showed us. Not to mention how great the finance team was. Proud to be a diamond Chevrolet customer More

by aluna8140
Service Price Transparency
Workmanship
Service Time
Service Communication
Recommend Dealer
Yes

Other Employees Tagged: Luis Rojas

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March 20, 2025

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Employee Rating

My family has been buying vehicles from Diamond Chevrolet even before it changed names (many years) and have always been treated fair. More

by Tim31958
Sales Price Transparency
Trade-in Experience
Purchase Time
Finance Experience
Recommend Dealer
Yes

Other Employees Tagged: Luis Rojas, Duc Nguyen

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Mar 21, 2025

Diamond Chevrolet of San Bernardino responded

Thank you for your kind words! We're thrilled to hear that you and your family have had positive experiences with Diamond Chevrolet of San Bernardino over the years. We appreciate your loyalty and are glad to see that our commitment to fair treatment has made a lasting impression. We look forward to serving you again in the future! Best, Israel Mora (909) 883-8833

March 16, 2025

Dealership Rating
Employee Rating

Jonathan was excellent not are first purchase from him this is why trust him to give us the best deal More

by ggalindo951
Recommend Dealer
Yes

Other Employees Tagged: Jonathan DeSimoni

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Mar 16, 2025

Diamond Chevrolet of San Bernardino responded

Thank you for your wonderful review! We’re thrilled to hear that you trust us for your purchases and that Jonathan provided you with excellent service. At Diamond Chevrolet of San Bernardino, we always strive to deliver the best deals for our customers. We look forward to serving you again in the future! Best, Israel Mora (909) 883-8833

February 15, 2025

Dealership Rating
Employee Rating

No hassle car buying experience, went through Costco car buying program, highly recommended. I will never buy cars any other way! The pre negotiated prices were ready upfront and I know all the costs before More

by JPAxelsson
Sales Price Transparency
Purchase Time
Finance Experience
Recommend Dealer
Yes

Other Employees Tagged: Luis Rojas

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Feb 16, 2025

Diamond Chevrolet of San Bernardino responded

Thank you so much for your fantastic review! We're thrilled to hear that you had a hassle-free car buying experience at Diamond Chevrolet of San Bernardino through the Costco car buying program. It’s great to know that you appreciated the pre-negotiated prices and the quick service in our parts department. Your recommendation means a lot to us! We look forward to welcoming you back for your next vehicle purchase! Best, Israel Mora (909) 883-8833

February 02, 2025

Dealership Rating
Employee Rating

They were all great and helpful to my son with start to finish Thank you More

by CAMERONRHOADES21
Sales Price Transparency
Trade-in Experience
Purchase Time
Finance Experience
Recommend Dealer
Yes

Other Employees Tagged: Elizabeth Ornelas , David De La Mancha

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Feb 04, 2025

Diamond Chevrolet of San Bernardino responded

Thank you for your kind words! I'm thrilled to hear that our team at Diamond Chevrolet of San Bernardino was able to help your son from start to finish. I truly appreciate your feedback and look forward to assisting you again in the future! Best, Israel Mora (909) 883-8833

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