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O'Fallon Buick GMC

(1,625 reviews)
Sales hours: 9:00am to 8:00pm
Service hours: 7:30am to 6:00pm
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Sales Service
Monday 9:00am–8:00pm 7:30am–6:00pm
Tuesday 9:00am–6:00pm 7:30am–6:00pm
Wednesday 9:00am–8:00pm 7:30am–6:00pm
Thursday 9:00am–6:00pm 7:30am–6:00pm
Friday 9:00am–8:00pm 7:30am–6:00pm
Saturday 9:00am–6:00pm 7:30am–1:00pm
Sunday Closed Closed
2025 consumer dealer award
View 1 awards
2025 consumer dealer award
New (636) 409-5328 (636) 409-5328
Used (636) 409-5324 (636) 409-5324
Service (636) 409-5321 (636) 409-5321

Reviews

(1,625 reviews)

A dealership's rating is based on all of their reviews, with more weight given to recent reviews. Includes reviews of O'Fallon Buick GMC from DealerRater.

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Very pleased with my experience.

Very pleased with my experience. Nik kept me informed and updated as needed throughout the process of my service.

Rating breakdown (out of 5):
  • Customer service
  • Buying process
  • Quality of repair
  • Overall facilities
  • Overall experience 5.0
  • Does recommend this dealer
  • Came in for service or repair
Worked with:
0 people out of 0 found this review helpful.

Was pleasantly pleased with the people and service we

Was pleasantly pleased with the people and service we received at the dealership. Nick did a heart job keeping us informed with the delays in getting the vehicle to the dealer. We feel we got a reasonable deal and love the new truck. Thank you!

Rating breakdown (out of 5):
  • Customer service
  • Buying process
  • Quality of repair
  • Overall facilities
  • Overall experience 5.0
  • Does recommend this dealer
  • Shopped for a new car
0 people out of 0 found this review helpful.

We were out of the service area in less than an hour.

We were out of the service area in less than an hour. Always very prompt service.

Rating breakdown (out of 5):
  • Customer service
  • Buying process
  • Quality of repair
  • Overall facilities
  • Overall experience 5.0
  • Does recommend this dealer
  • Came in for service or repair
0 people out of 0 found this review helpful.

Really good to work with and was willing to deal very

Really good to work with and was willing to deal very happy with our experience.

Rating breakdown (out of 5):
  • Customer service
  • Buying process
  • Quality of repair
  • Overall facilities
  • Overall experience 5.0
  • Does recommend this dealer
  • Shopped for a new car
0 people out of 0 found this review helpful.

Everyone is always so nice and they are fast and

Everyone is always so nice and they are fast and efficient and I never feel like they are trying to sell me something at each visit.

Rating breakdown (out of 5):
  • Customer service
  • Buying process
  • Quality of repair
  • Overall facilities
  • Overall experience 5.0
  • Does recommend this dealer
  • Came in for service or repair
Worked with:
0 people out of 0 found this review helpful.

Bought a new Acadia in 2024.

Bought a new Acadia in 2024. Had 2 issues in the first year. Both parts on back order. No communication from service department. I no longer own a GMC.

Rating breakdown (out of 5):
  • Customer service
  • Buying process
  • Quality of repair
  • Overall facilities
  • Overall experience 1.0
  • Does not recommend this dealer
  • Came in for service or repair
0 people out of 0 found this review helpful.

From my Sales guy Paul to the finance gentleman and even

From my Sales guy Paul to the finance gentleman and even the Parts guy Kevin, everyone has been a pleasure to work with. Buying a vehicle can be a daunting and intimidating experience for some people but not only did I get a great deal on the truck I’ve been purchasing parts for the truck to “spruce it up” and I am thoroughly satisfied with everyone involved!

Rating breakdown (out of 5):
  • Customer service
  • Buying process
  • Quality of repair
  • Overall facilities
  • Overall experience 5.0
  • Does recommend this dealer
  • Shopped for a new car
0 people out of 0 found this review helpful.

I would definitely recommend this dealership to my

I would definitely recommend this dealership to my friends and family! They made our process stress free, easy, and smooth from start to finish!

Rating breakdown (out of 5):
  • Customer service
  • Buying process
  • Quality of repair
  • Overall facilities
  • Overall experience 5.0
  • Does recommend this dealer
  • Shopped for a new car
0 people out of 0 found this review helpful.

Beautiful dealership, large inventory and great staff.

Beautiful dealership, large inventory and great staff. my salesperson Christy Thornton was great. Perfect in every way.

Rating breakdown (out of 5):
  • Customer service
  • Buying process
  • Quality of repair
  • Overall facilities
  • Overall experience 5.0
  • Does recommend this dealer
  • Shopped for a new car
0 people out of 0 found this review helpful.

Blake was very helpful in finding the vehicle we were

Blake was very helpful in finding the vehicle we were looking for. He took the time to answer our questions, and resolved our concerns in a professional way. We would highly recommend Blake as a salesperson.

Rating breakdown (out of 5):
  • Customer service
  • Buying process
  • Quality of repair
  • Overall facilities
  • Overall experience 5.0
  • Does recommend this dealer
  • Shopped for a new car
Worked with:
0 people out of 0 found this review helpful.