4200 N Service Rd
Saint Peters, MO 63376

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Sales: 636-939-0800

Used Cars: 636-939-0800

Hours Toggle

Sales Department

Sun Closed
Mon 9:00am – 9:00pm
Tue 9:00am – 6:00pm
Wed 9:00am – 9:00pm
Thu 9:00am – 6:00pm
Fri 9:00am – 9:00pm
Sat 9:00am – 6:00pm

Service Department

Sun Closed
Mon 7:00am – 6:00pm
Tue 7:00am – 6:00pm
Wed 7:00am – 6:00pm
Thu 7:00am – 6:00pm
Fri 7:00am – 6:00pm
Sat Closed

Reviews of Suntrup Buick GMC

Overall Rating:

3.6 (out of 5)

90% recommend this dealer

59 total reviews

Showing the most recent reviews from Cars.com and DealerRater.

1.0 (out of 5)

Poor customer service.

Reviewed by Vickie Patschull from Florissant, MONovember 14, 2025

Poor customer service. I waited 2 hours 40 minutes for a simple oil change and tire rotation with no communication from service department until I complained. I will never patronized this dealership again.

  • Does not recommend this dealer
  • Came in for service or repair
  • Did make a purchase

Dealer Response

Vickie, thank you for letting us know about your recent visit to Suntrup Buick GMC. We'd like the opportunity to turn your experience around. Please reach out to us at (636) 936-9794 at your earliest convenience to discuss how we can turn this experience into a positive one.

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Maximum rating = 5

5.0 (out of 5)

Suntrup is an exemplary dealership in both sales and

Reviewed by Janice A Amidon from O Fallon, MissouriSeptember 25, 2025

Suntrup is an exemplary dealership in both sales and service. I will continue to use their service and will work with then again if/when I need a new car.

  • Does recommend this dealer
  • Shopped for a new car
  • Did make a purchase

Dealer Response

Janice, we appreciate you taking the time to leave us this feedback. If you have any further questions, please give us a call. We're always happy to help!

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Maximum rating = 5

3.0 (out of 5)

Bought my car on a Saturday realized on Sunday air

Reviewed by Theo from Pinckneyville, illinoisJuly 11, 2025

Bought my car on a Saturday realized on Sunday air conditioning only blew on center vents and no heat.Got ahold of my salesman on Monday he said bring it here and we'll look at it. Luckily I bought an extended warranty because the had warranty pay for repairs. Took 2 months for the repairs to be done. On my way home from dealership ac is spitting water out the vents. I got to looking and they had the ac drain blocked, fixed it myself. I now also have a couple under dash floor board and cup holder lights that don't work the worked before repairs

  • Does not recommend this dealer
  • Shopped for a used car
  • Did make a purchase

Dealer Response

We appreciate all reviews, and appreciate you giving us the chance to improve by providing us with this feedback. We would like the opportunity to find out how we can better assist you in the future. If you are willing, please contact us (636) 936-9794.

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Maximum rating = 5

About Suntrup Buick GMC

We're St. Charles' neighborhood Buick GMC dealer for new and pre-owned cars trucks and SUVs. Located off Highway 70 at the Cave Springs exit we offer unmatched prices on our extensive inventory of new Buick and GMC cars trucks vans and SUVs for sale--as well as an equally impressive selection of like-new pre-owned and certified vehicles of various make and model. Our GM Certified Service Department attends to all automotive brands and has been regionally recognized for outstanding customer service.

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