Sergio Martell
Sergio Martell at Dalton Hyundai of National City

Sergio Martell | Page 2

General Sales Manager

Dalton Hyundai of National City

3150 National City Boulevard
National City, CA 91950

Contact Me
4.5
32 Reviews

Dealership Experience

2 yrs, 2 mos

Industry Experience

18 yrs, 5 mos

Languages Spoken

Spanish Spanish

4.5

32 Reviews

Write a Review

32 Reviews of Sergio Martell

August 08, 2026

Dealership Rating
Employee Rating

I was impressed by how thorough checking in and out was. Excellent service by all. More

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

Other Employees Tagged: Rick Griffin, Mark Moore, Monica Salem , Cedric Butler, Adriana Martinez, Gerardo Romo

Aug 08, 2026

Dalton Hyundai of National City responded

Your comments about the thorough check-in and check-out process reflect our service team’s attention to detail. Hearing that you found our service excellent means a lot to our service team.

August 07, 2026

Dealership Rating
Employee Rating

I had a great experience buying my car at Dalton Hyundai. Everyone was friendly, helpful, and made the process easy and stress free. More

by lissetp17
Sales Price Transparency
Trade-in Experience
Purchase Time
Finance Experience
Recommend Dealer
Yes

Other Employees Tagged: Mark Moore , Cedric Butler

Aug 07, 2026

Dalton Hyundai of National City responded

Knowing that the buying process felt simple and worry-free means a lot to our team. We’re pleased we could guide you through your purchase of a used Kona with ease. Thank you for choosing our dealership and highlighting our team’s friendliness and support.

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

Other Employees Tagged: Rick Griffin, Mark Moore, Monica Salem , Cedric Butler, Adriana Martinez, Gerardo Romo, Jose (lot attended)

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

Dealership Rating
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

Other Employees Tagged: Rick Griffin, Mark Moore, Monica Salem , Cedric Butler, Adriana Martinez, Gerardo Romo, Andres

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

Dealership Rating
Employee Rating

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
Finance Experience
Recommend Dealer
Yes

Other Employees Tagged: Rick Griffin, Mark Moore, Monica Salem , Cedric Butler, Adriana Martinez, Gerardo Romo

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

Dealership Rating
Employee Rating

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
Purchase Time
Finance Experience
Recommend Dealer
Yes

Other Employees Tagged: Mark Moore , Cedric Butler

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

Dealership Rating
Employee Rating

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

Other Employees Tagged: Rick Griffin, Mark Moore, Monica Salem , Cedric Butler, Gerardo Romo, Alyssia valdez

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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Employee Rating

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
Trade-in Experience
Purchase Time
Finance Experience
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

Dealership Rating
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

Other Employees Tagged: Rick Griffin, Mark Moore, Monica Salem , Cedric Butler, Gerardo Romo

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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Employee Rating

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

by susan.korosy
Sales Price Transparency
Trade-in Experience
Purchase Time
Finance Experience
Recommend Dealer
Yes

Other Employees Tagged: Rick Griffin, Mark Moore, Monica Salem , Cedric Butler, Gerardo Romo

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.

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