Used cars, trucks & SUVs in St. Louis, MO

Shop quality pre-owned vehicles at South County Auto Plaza

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Used cars under $15,000

Used cars under $25,000

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New arrivals

SUV | SEDAN | COUPE | TRUCK

Stock # 7820

2018 Land Rover Discovery

HSE LUXURY

84,383 miles

$18,990

Est. Payment
$314/mo

Stock # 7808

2018 Audi Q3

2.0T Premium

98,414 miles

$12,990

Est. Payment
$214/mo

Stock # 7806

2017 Mercedes-Benz GLS 450

4MATIC

157,221 miles

$13,990

Est. Payment
$239/mo

Stock # 7809

2018 Ford Mustang

EcoBoost

97,973 miles

$15,990

Est. Payment
$264/mo

Browse new arrivals

Trusted by 1,300+ Happy Customers. See why drivers across the St. Louis area choose South County Auto Plaza for honest pricing, flexible financing, and a pressure-free buying experience.

Aiden Freant
4/4/2026

I recently talked to Jeff about buying a car a couple months ago. He tried working with me but I was young and had no money down. Any dealer would’ve ran your credit like no other but he stopped me and told me to come back later. Here I am today buying a car from Jeff an he has worked with me like no other. It was like he treated me as his own son with financial advice and worked with me so much that it made spending this money a delight.

Amanda Everly
3/17/2026

I went to South County Auto Plaza today and found a beautiful car w help from a very cool sales representative named Dylan Kilbourne, who went out of his way to get me in the car I wanted. South County Auto Plaza had a good selection of cars w lower miles and lower prices than any other used dealership I found. I am very happy w my purchase . Thank you.

Clelia Ann
2/14/2026

Out of all of the cars I’ve looked at, Jeff took care of me! He was thorough, educational, and made me feel like I can trust him and this business. I’m happy with my purchase and excited to have a new car!

Jason Wright
1/23/2026

I recently bought a car for my 16 year old daughter from South County Auto Plaza and could not have asked for a better experience. The process was stress free and I got a quality car at a fair price. Go see Dylan Kilbourne and he will treat you right and he is super responsive as well! The customer service side was just as great- shout out to Jason on their team. I would buy another car from them without thinking twice about it.

Gale Knittig
12/12/2025

Jeff was amazing! No pressure and went over what they needed to do to the vehicle. After sale was also a great experience. They did 100% what they promised! I highly recommend South County Auto Plaza and ask for Jeff, he will take care of you!!

Izzy Wolff
12/3/2025

Jeff is the guy who helped me with my car. Was super nice and friendly, made sure that I’m saving as much money as I could. Helped me find the best financing with my credit!! Happy to get my car from them

Why choose South County Auto Plaza?

Located in St. Louis, Missouri, South County Auto Plaza is your trusted destination for quality pre-owned vehicles, transparent pricing, and flexible financing options.

We proudly serve drivers throughout the St. Louis metro area with a wide selection of reliable cars, trucks, and SUVs — all carefully inspected for safety, performance, and value. No hidden fees. No pressure. Just honest deals.

Our experienced team is here to guide you through every step of the process, whether you’re buying your first car, upgrading to a family SUV, or shopping for a dependable work truck. We take the time to understand your needs and help you drive away with confidence.

At South County Auto Plaza, buying a car is simple, straightforward, and built around you.

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