Sergio Martell
Sergio Martell at Dalton Hyundai of National City

Sergio Martell

General Sales Manager

Dalton Hyundai of National City

3150 National City Boulevard
National City, CA 91950

Contact Me
4.6
20 Reviews

Dealership Experience

1 yr, 11 mos

Industry Experience

18 yrs, 2 mos

Languages Spoken

Spanish Spanish

4.6

20 Reviews

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20 Reviews of Sergio Martell

July 19, 2026

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Employee Rating

My car buying experience at Dalton Hyundai was truly professional and they gave me the best deal possible More

by mikeardenphillips
Sales Price Transparency
Purchase Time
Finance Experience
Recommend Dealer
Yes
Jul 19, 2026

Dalton Hyundai of National City responded

It was a pleasure assisting you with your purchase and finding a great deal. We’re pleased our professional approach met your expectations. Enjoy your Hyundai, and we look forward to your next visit.

July 17, 2026

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Employee Rating

I had an amazing experience at Dalton Hyundai of national city. Excellent customer service! I would definitely recommend. Especially Andres the salesman. More

by ABBYUDAVE5
Sales Price Transparency
Purchase Time
Finance Experience
Recommend Dealer
Yes
Jul 18, 2026

Dalton Hyundai of National City responded

It’s wonderful to hear our team provided excellent service. Congratulations on your new Hyundai Tucson and thank you for recommending us. We look forward to assisting you again soon.

July 14, 2026

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Excellent service! Very attentive! Thank you! Dalton Hyundai of National City this is now 15 words long More

by itaenglish
Sales Price Transparency
Trade-in Experience
Purchase Time
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Recommend Dealer
Yes
Jul 14, 2026

Dalton Hyundai of National City responded

Thank you for sharing your positive experience and congratulations on your new Hyundai Elantra. We’re delighted our attentive service met your expectations and hope you enjoy every drive.

June 04, 2026

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i've dealt with multiple dealers in AZ and let me tell you, first-time CA buyer and had a great experience, Chris my sales rep was top of the line, all questions answered. Mark the sales manager made sure More

by yonathan0
Sales Price Transparency
Trade-in Experience
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Recommend Dealer
Yes

Other Employees Tagged: Cedric Butler, Mark Moore

Jun 04, 2026

Dalton Hyundai of National City responded

We’re thrilled your first California purchase went so smoothly from getting every question answered to an easy process. Mark made your service visit exceptional and Sergio appreciated the chance to chat. Congratulations on your new Hyundai Sonata Hybrid and thanks for the 5 star rating.

June 02, 2026

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Very kind, too much clean. Thank you for your support. I will visit next time. More

by Jiho park
Sales Price Transparency
Trade-in Experience
Purchase Time
Finance Experience
Recommend Dealer
Yes
Jun 02, 2026

Dalton Hyundai of National City responded

We’re glad our team’s kindness and a spotless environment made an impression. It’s great to know our support met your expectations. We look forward to your next visit to explore more Hyundai offerings.

May 21, 2026

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Great dealer - knowledgeable and professional sales, management and finance staff! They delivered a great product in a comfortable environment. Highly recommend. More

by djbreithaupt
Sales Price Transparency
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Recommend Dealer
Yes

Other Employees Tagged: Sale and finance persons

May 22, 2026

Dalton Hyundai of National City responded

We are very happy to have provided you with such a positive experience! We sincerely value your business and look forward to your next visit.

May 10, 2026

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Employee Rating

The dealership itself is great, and they are all helpful. I was just frustrated when I make my appt for my ceramic coating costing $1500 (or something along those lines), and they deny me a ride home unless More

by Veaziejeff3
Sales Price Transparency
Trade-in Experience
Purchase Time
Finance Experience
Recommend Dealer
No
May 14, 2026

Dalton Hyundai of National City responded

Thank you for this feedback. We're very sorry to see that you didn't have the best experience at our dealership. While we're disappointed to learn that we didn't meet your expectations, we'd love to try to turn things around and make sure the same thing doesn't continue to happen.

May 02, 2026

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They welcomed me, sent me things in the mail, and worked with me on financing. More

by susan.korosy
Sales Price Transparency
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Finance Experience
Recommend Dealer
Yes
May 02, 2026

Dalton Hyundai of National City responded

Thanks for choosing a used Hyundai IONIQ 5 with us. We’re glad you felt welcomed, appreciated our mail updates, and found the financing process accommodating. We look forward to assisting you again soon.

April 29, 2026

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Employee Rating

They always do an excellent job, quickly and with great customer service. 100% recommended. Definitely coming back. More

by Galaz
Sales Price Transparency
Trade-in Experience
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Recommend Dealer
Yes
Apr 29, 2026

Dalton Hyundai of National City responded

Thank you for recommending our team so highly. We’re pleased they completed the work promptly while delivering friendly and attentive service. We look forward to assisting you again soon.

April 24, 2026

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Employee Rating

Good customer service, did not try to over sell services, wait time was reasonable, lounge was comfortable More

by alsoto14
Sales Price Transparency
Purchase Time
Finance Experience
Recommend Dealer
Yes
Apr 24, 2026

Dalton Hyundai of National City responded

We’re pleased to hear our team delivered straightforward service and kept your wait time reasonable while you visited with your used Hyundai Elantra N. It’s great to know the lounge provided a comfortable space. Let us know if there’s anything else we can help you with.

Apr 27, 2026

Dalton Hyundai of National City responded

Thank you for sharing the exceptional service you received from our team during your visit, we look forward to seeing you during your next visit!

1

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