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Mario Retta

Overview Reviews (54) Inventory (392)

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Mario Retta

New Car Inventory Manager

Heritage GMC Buick

930 E Interstate 30
Rockwall, TX 75087

Going on 35 years of selling exclusively GMC trucks and suv’s, love dealing with people, I guess that’s why I have fun doing what I do. I have 5 children and 4 grandkids with another granddaughter due to arrive this October! Enjoy fishing, golf but love coaching baseball, coached my 38 yr. old and am now coaching my 11 yr. old!! Been married to my Lords blessing for 34 years, and have served as Deacon for past 13 years at our church. Believe in fairness and honesty, I tell all my friends and customers that I am in the repeat business!

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4.9

54 Reviews

Overview Reviews (54) Inventory (392)

Dealership Experience

15 yrs, 4 mos

Industry Experience

42 yrs, 1 mo

Languages Spoken

Spanish

4.9

54 Reviews

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54 Reviews of Mario Retta

November 08, 2026

Dealership Rating

Employee Rating

The process to purchase was simple and quick. Mario is a honest representative of Heritage GMC Buick. Mario is a honest representative of Heritage GMC Buick. More

by MJMASSEY5350

Verified Customer

Sales Price Transparency

Trade-in Experience

Purchase Time

Finance Experience

Recommend Dealer

Yes

Other Employees Tagged: Zach Baughier

November 02, 2026

Dealership Rating

Employee Rating

Fast, efficient and friendly during the entire process. I was pleased with the communication and the rapid response to any issues. I was pleased with the communication and the rapid response to any issues. More

by Mcoultas

Verified Customer

Sales Price Transparency

Trade-in Experience

Purchase Time

Finance Experience

Recommend Dealer

Yes

October 18, 2026

Dealership Rating

Employee Rating

Don't believe the price they post, they're all lies. Made me lose my love for this brand. Made me lose my love for this brand. More

by sun

Sales Price Transparency

Trade-in Experience

Purchase Time

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Recommend Dealer

Other Employees Tagged: Brad Parks

Oct 18, 2026 -

sun responded

On October 17th, I went with my family to the GMC dealership location at 930 East I-30 Frontage Rd, Rockwall, TX 75087, to inquire about and want to purchase a GMC Sierra 1500 pickup truck. Because I had seen this vehicle on their website earlier and they were currently running a promotion. However, upon arrival at the store, it was discovered that the price was significantly different from what they had down on the website. The quoted price on the website, after various discounts were applied, was 62,720. Assuming a tax rate of 6.25%, the final price would be 3,920. The total would be: 66,640. After reaching the dealer location, they offered the following price: 69778.32 (with the quotation sheet and picture attached). The salespeople explained that the vehicle had tinted, so there would be an additional charge of 1499. I didn't want the tinting, and the most important thing is that even after subtracting the 1499 for the tinting, their on-site quote was still much higher than what was post on the website. When we asked if we could bring the quote back home to discuss, the salesperson clearly refused, saying "No". I don't know why? So I'm complaining about this dealer's deceptive low-price promotion that tricks consumers.

October 13, 2026

Dealership Rating

Employee Rating

Heritage is my go to dealership for buying trucks. I’ve always been treated with respect and it’s not like some dealerships where everything feels like a battle. Definitely a fair and honest dealershi I’ve always been treated with respect and it’s not like some dealerships where everything feels like a battle. Definitely a fair and honest dealership. More

by Makins1

Verified Customer

Sales Price Transparency

Trade-in Experience

Purchase Time

Finance Experience

Recommend Dealer

Yes

Other Employees Tagged: Quentin DeRossett

September 18, 2026

Dealership Rating

Employee Rating

I’ve been buying vehicles from Mario Retta at Heritage for years. No pressure car salesman. No haggling salesman. Quick and easy experience every time. for years. No pressure car salesman. No haggling salesman. Quick and easy experience every time. More

by wayne_glasson

Verified Customer

Sales Price Transparency

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Recommend Dealer

Yes

August 07, 2026

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Love working with Mario always. He’s very patient and understanding with someone who can’t easily decide which vehicle to get or whether to spend this much money or not. That was me He’s very patient and understanding with someone who can’t easily decide which vehicle to get or whether to spend this much money or not. That was me. He was wonderful to deal with. More

by Robin McGary

Verified Customer

Sales Price Transparency

Purchase Time

Finance Experience

Recommend Dealer

Yes

Other Employees Tagged: Doug Hogue

June 17, 2026

Dealership Rating

Employee Rating

Justin goes above and beyond the call of duty to make sure everything goes as well as possible and keeps a great line of communication open all the time. sure everything goes as well as possible and keeps a great line of communication open all the time. More

by RED2

Verified Customer

Service Price Transparency

Workmanship

Service Time

Service Communication

Recommend Dealer

Yes

Other Employees Tagged: Justin Mummey

May 23, 2026

Dealership Rating

Employee Rating

The process was great the whole way though. Starting with Mario all the way through financing and communication. Starting with Mario all the way through financing and communication. More

by fidel.ramirez51

Verified Customer

Sales Price Transparency

Purchase Time

Finance Experience

Recommend Dealer

Yes

October 12, 2025

Dealership Rating

Employee Rating

Mario was great salesman, he helped me pick out the best truck that was good for me. truck that was good for me. More

by jamescamarata1

Verified Customer

Service Price Transparency

Workmanship

Service Time

Service Communication

Recommend Dealer

Yes

August 04, 2025

Dealership Rating

Employee Rating

Everyone was pleasant to deal with and worked with me to get the vehicle I wanted. I am thankful for everyone there. get the vehicle I wanted. I am thankful for everyone there. More

by eugene20

Verified Customer

Sales Price Transparency

Trade-in Experience

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Recommend Dealer

Yes

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