Rick Deppen
Rick Deppen at O'Fallon Buick GMC

Rick Deppen

General Sales Manager

O'Fallon Buick GMC

2150 Technology Dr
O'Fallon, MO 63368

Contact Me
4.8
44 Reviews
4.8

44 Reviews

Write a Review

44 Reviews of Rick Deppen

December 05, 2025

Dealership Rating
Employee Rating

This dealership has provided me with excellent service thus far, and I particularly appreciate the service department, which I visited for the first time yesterday. I intend to continue patronizing this e More

by Bodani
Service Price Transparency
Workmanship
Service Time
Service Communication
Recommend Dealer
Yes

Other Employees Tagged: Jarrod Finder, Nik Halaska , Roger

November 22, 2025

Dealership Rating
Employee Rating

Staff needs to be commended because everybody was nice, friendly and professional.All at the same time, I would come back to buy from you all again. More

by randycarthans22
Sales Price Transparency
Purchase Time
Recommend Dealer
Yes

October 27, 2025

Dealership Rating
Employee Rating

Hakeem did an amazing job along with the finance team. We appreciated everyone including the owner which was very pleasant and nice to talk to. You guys rocked it out of the house. Thank you. Randy and K More

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

October 18, 2025

Dealership Rating
Employee Rating

Awful…. so many issues from start to finish…...never proactively contacted by management. So much time and energy exerted on my part — Do not waste your time More

by nicole74
Service Price Transparency
Workmanship
Service Time
Service Communication
Recommend Dealer
No

October 07, 2025

Dealership Rating
Employee Rating

As a valued customer, I have acquired two vehicles from this dealership, most recently the Hummer EV. I would like to commend Roger, the sales representative who facilitated my purchase. I would certainly More

by Bodani
Sales Price Transparency
Recommend Dealer
Yes

Other Employees Tagged: Jarrod Finder, Roger Silva

September 17, 2025

Dealership Rating
Employee Rating

This is not the first car that I’ve bought from them and it certainly won’t be the last. More

by JOEYG3
Service Price Transparency
Workmanship
Service Time
Service Communication
Recommend Dealer
Yes

August 13, 2025

Dealership Rating
Employee Rating

Total professional service from the time ya get there. These guys are finally oiled machines, no pun intended. Lol! Thanks for keeping my truck tiptop shape! You were right, Donnie. It is the More

by dpollard66
Service Price Transparency
Workmanship
Service Time
Service Communication
Recommend Dealer
Yes

July 12, 2025

Dealership Rating
Employee Rating

I was approached quickly upon entry, but no pressure to buy. All my questions were quickly answered. More

by tgearin61
Sales Price Transparency
Trade-in Experience
Purchase Time
Finance Experience
Recommend Dealer
Yes

Other Employees Tagged: Michael Johnson , Harold VL was my sales guy. Wonderful experience. I would seek him out again.

July 03, 2025

Dealership Rating
Employee Rating

Outstanding service from the moment you get there. I have several vehicles that this dealership takes care of, and no complaints at all. Thanks guy! More

by dpollard66
Service Price Transparency
Workmanship
Service Time
Service Communication
Recommend Dealer
Yes

June 27, 2025

Dealership Rating
Employee Rating

This dealership is the epitome of customer service! Not only do they assist in whatever request you have, they go above and beyond! Joe is my service rep and he has never disappointed me! I’ve purchase More

by COLLECTIVECATERING
Service Price Transparency
Workmanship
Service Time
Service Communication
Recommend Dealer
Yes
1
...

Dealership Inventory (336 Vehicles)

new 2026 GMC Acadia car, priced at $65,625
2026 GMC Acadia
new
Ebony exterior
Automatic
All-wheel Drive
new 2026 Buick Envista car, priced at $27,407
2026 Buick Envista
new
Ebony Twilight Metallic exterior
Automatic
Front-wheel Drive
new 2026 GMC Canyon car, priced at $51,119
2026 GMC Canyon
new
Onyx Black exterior
Automatic
Four-wheel Drive
new 2026 GMC Canyon car, priced at $47,414
2026 GMC Canyon
new
Volcanic Red exterior
Automatic
Four-wheel Drive
used 2024 Ford Mustang car, priced at $40,900
2024 Ford Mustang
used
Vapor Blue Metallic exterior
Automatic
Rear-wheel Drive
new 2026 GMC Canyon car, priced at $47,268
2026 GMC Canyon
new
Sterling exterior
Automatic
Four-wheel Drive