STG Auto Group of Montclair — Local services in Montclair

RUN, don’t walk, as fast as possible from STG Auto Group. Their lower prices are a trap—you’ll lose any savings in the massive headache of dealing with their deceptive business practices and terrible customer service. This review is long, but worth reading if you’re considering buying from them.

My husband and I purchased a 2021 BMW X5 from the Montclair location in February 2025. We live in San Diego and made the 2-hour drive because the vehicle appeared to be a great deal and we liked the model.

After the test drive, the initial offer was nearly $10K over the listing price—loaded with add-ons we never requested: tint, ceramic coating, GPS tracker, service package, and more. After several hours of haggling and “manager visits,” we agreed to pay about $1,000 above listing for a package including tint, ceramic coating, a detail, and a two-year service plan. They also agreed to get us a second key at dealer price and said they’d leave the GPS tracker on since removing it would cost more. We signed and drove off—satisfied, but the nightmare started soon after.

It took nearly a month and over 20 calls just to schedule the tint and coating service. Their phone system is a black hole: endless transfers to disconnected voicemails, missed calls, and no follow-ups. When I finally got someone in service, I was told my contract only included a “buff and detail,” not ceramic coating. I had to contact Rami, the sales manager, which led to another 25+ calls over a month. Eventually, he admitted we were promised the coating, and I got the service scheduled—in late April, almost three months later.

I drove up again from San Diego only to be told they’d only do the coating that day. I had to reschedule the rest. After another 10+ calls, I returned for the tint, detail, and key programming. The tint was fine. The detail was mediocre—cup holders and trunk still dirty. The key couldn’t be programmed, so I was told to speak with the sales office. While driving there, I noticed a missing air vent flap on the passenger side. I photographed it and reported it to Rami immediately. He claimed they’d replace it and coordinate with BMW for the key.

After another 20+ calls, I was told they wouldn’t fix the vent because I couldn’t “prove” the damage happened on their watch. Apparently, their “footage” didn’t show it. Do they really have interior video of every car? Doubtful. The key also wouldn’t be discounted after all.

To top it off, the GPS tracker they said they’d “just leave on” wasn’t even activated. When I explained this to the service manager, she was rude and insisted on physically removing the device before I left, which—while free—was handled with zero professionalism.

The only helpful person I encountered was Josie in service, who showed sympathy and helped with scheduling. Everyone else, especially Rami and the service manager, was evasive, unresponsive, or downright rude.

In total, I made about 70 calls, spent countless hours on hold, and took two round trips (4 hours each)—all just to get partial fulfillment of what was promised. I did get the tint and (supposed) coating. The detail was below average. I never got the second key, and my vehicle was returned damaged. I’ll try fixing the vent myself—though it’s a BMW, so I’m not hopeful. I’ll also note the battery also died after 3 months, but that’s expected with used cars.

This place is a walking stereotype of shady used car dealerships. I remained professional and firm throughout, but their constant evasiveness, broken promises, and worn-out customer tactics made it impossible.

Lesson learned: get every agreement in writing—specifically spelled out. But more importantly, just don’t shop here. Spend a bit more at a dealership with integrity. If you made it this far, thank you—and I hope this saves you from the financial and emotional drain that is STG Auto Group.

UPDATE 7/27/25: In reply to STG's response, as I mentioned you had OVER 70 TIMES to get this right. Your apology and offer to help rings hollow. If you truly were sorry, you would call to...

If I could give zero stars, I would.

Back in February, my partner and I went to STG Motors of Montclair to buy a Dodge Durango we saw on their website. The listed price is what got us in the door, but once we arrived, we were pushed toward a different model at a higher price. We looked at it at night with salesman Manuel, so we couldn’t see everything clearly, but trusted what we were being told. Big mistake.

We signed all the paperwork assuming the car was ready to go. The next day when I went to pick it up, I was told it actually wasn’t ready at all — it needed brakes, an oil change, and other maintenance that they somehow didn’t bother to do before trying to sell it. What was supposed to be a one-day process turned into a week of waiting and constant back-and-forth with managers Joseph and Ramy.

Once we finally got the vehicle, the problems didn’t stop. We had to drive all the way out to Bellflower for promised repairs and updates, including a remote starter that STILL doesn’t work. On top of that, we later realized the trunk cover (which was shown in the online listing) was missing and broken. When we called about it, we were told we’d be given one pulled from another vehicle. Seven months later, it’s September, and we are still waiting.

We were also promised compensation for the multiple wasted trips between Los Angeles and Montclair — gas, childcare, time — but that never happened either. And to this day, our salesman Manuel has yet to provide us with our final contract paperwork, no matter how many times we’ve called to ask.

At this point, anything that was ever promised to us has not been delivered. Not one single thing. This has completely broken our trust with this company. Their lack of professionalism, honesty, and accountability is unbelievable. From the misleading sales tactics, to the hidden maintenance issues, to the lies and empty promises afterward — this entire experience has been a nightmare.

I will never go back, and I strongly warn anyone considering STG Motors of Montclair to think twice before giving them...

I don’t enjoy writing negative reviews, but after weeks of being ignored by STG Auto Group Montclair, I feel obligated to share my experience so others can make informed decisions.

To be fair, I’m giving 2 stars (not 1) because my trade-in value was slightly better than other offers — though only after firm negotiation, as the initial offer was low.

The Issues:

Stain Repair Promise Ignored: Before signing, I pointed out a visible stain on the front passenger door panel and was told it would be addressed. After delivery, they “forgot” and never followed up, despite repeated emails to multiple managers and even the owner.

No Details on 2-Year Maintenance: The signed Due Bill says “2-year complimentary maintenance up to 30,000 miles,” but I received no explanation of coverage, how to use it, or any terms.

Mileage Discrepancy: Online listing showed 59,217 miles; the contract showed 60,399 — a 1,182-mile difference never disclosed beforehand. This is exactly the kind of accuracy customers expect from listings.

Aftermarket GPS Charge: I asked to remove the $1,095 GPS before signing and was told it was “not removable.” In the BBB response, they claimed it was optional.

No Loaner Vehicles: They confirmed they do not provide loaners during repairs — a basic service most reputable dealers offer.

High-Pressure Tactics: I was rushed through form after form with no explanation, told “You’ve been here long enough — just decide,” and even denied time to move my belongings until I insisted. They repeatedly claimed the price was “below Kelley Blue Book,” which, after factoring in the GPS charge and mileage difference, wasn’t true.

In Summary: Friendly at first, but once the paperwork was signed, follow-up was nonexistent. Communication was poor, promises went unfulfilled, and key facts were misrepresented or withheld. If you value honesty, accurate listings, and proper after-sales support, I recommend...