STG Auto Group of Ontario

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STG Auto Group of Ontario We are Inland Empire's premier used car dealership. Explore and choose from over 1,600 quality vehicl

STG Auto Group should be your first stop when you're looking at used cars for sale in LA County, Orange County, and Inland Empire. We make it easy to explore our high-volume and high-quality pre-owned car inventory from all over California. And don't hesitate to schedule an appointment at our car repair center or meet with our auto finance experts!

10/20/2026

Spooky season is upon us👻🍂🎃

10/20/2026

We tested the autopark on the Tesla Model X 👀

The 2023 Audi SQ8 4.0T doesn't ask for attention — it takes it. 🖤 500 horses of German muscle 🐎 in a coupe-cut SUV that ...
10/20/2026

The 2023 Audi SQ8 4.0T doesn't ask for attention — it takes it. 🖤 500 horses of German muscle 🐎 in a coupe-cut SUV that hits different in person. Quattro grip, Prestige everything. ⚡

10/18/2026

“I’m just looking.” So is the salesman. 👀😂

10/17/2026

Built on trust. Driven by growth. From Montclair to Bellflower, Chandler to Dallas — we’re just getting started.

Your driveway deserves this. 🔥 The 2021 Chevrolet Corvette 2LT brings sharp looks and a reason to take the long way home...
10/17/2026

Your driveway deserves this. 🔥 The 2021 Chevrolet Corvette 2LT brings sharp looks and a reason to take the long way home.

10/17/2026

What do you guys think about the new Tesla Model X Roadster? 👀

10/16/2026

This ain't your everyday Jeep. 🐊 2022 Gladiator Rubicon — Sarge Green, lifted, light bar up top, and diesel with 442 lb-ft of torque. Off-road it or keep it clean? 👇

Parked, but still stealing the show. 🔥 2022 BMW M4 Competition at STG Auto Group. Who’s taking the keys? 👀 ...
10/16/2026

Parked, but still stealing the show. 🔥 2022 BMW M4 Competition at STG Auto Group. Who’s taking the keys? 👀

10/16/2026

5 trims. 3 seconds each. How many did you get? 👇

Address

10477 Central Avenue
Montclair, CA
91763

Opening Hours

Monday 9am - 9pm
Tuesday 9am - 9pm
Wednesday 9am - 9pm
Thursday 9am - 9pm
Friday 9am - 9pm
Saturday 9am - 9pm
Sunday 9am - 9pm

Telephone

+19093085431

Website

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