3:23 Automotive

Jesus Medina

★★★★★

3 months ago

I highly recommend 3:23 automotive. Cornelio and Lulu are a great team and are really dedicated to making their business the best. I was really satisfied with the work done to my car and how great they run their business. They were very friendly, effective, and responsible. Their work speaks for themselves. They are quick to respond and help you in anyway they can. They did a really great job and I would definitely recommend them!

Dean Lev

★★★★★

a month ago

Outstanding experience at 3:23 Automotive. I came in for a transmission service and oil change, and the entire process was smooth, professional, and transparent from start to finish. They clearly explained what my vehicle needed, completed the work efficiently, and made sure everything was done properly. No pressure, no unnecessary upsells — just honest, quality service. Pricing was great and fair for the level of expertise and care they provide. If you’re looking for a trustworthy shop that actually values integrity and professionalism, this is the place. Highly recommend and will definitely return. — Dean Lev

Priscilla Romero

★★★★★

3 months ago

Great price • Excellent communication • Fast service Highly recommend Lulu & Cornelio at 323 Automotive! Their communication is always amazing, pricing is very fair, and the service is quick and reliable. About a year or two ago, I had a repair done here and recently needed the same part looked at again (old car) thankfully it was still under warranty, and Cornelio took care of it immediately without any hassle. He also helped me with a few other needs at the same time #ImJustAGirl It’s such a relief to have an honest, dependable shop you can truly trust. I’m so grateful for both of them and highly recommend this shop to anyone looking for quality auto care!

Aric Pelafas

★★★★★

a month ago

Amazing service from a family owned business. They have sent detailed videos to me while at work of what is wrong with my vehicle with a quote for what it will cost before doing the work! They also do not push for services or things that are not needed. This is great for someone like me who does not know anything about vehicles! This has been the only automotive business that I trust in Denver. I would recommend them to anyone!

Donna Feldman

★★★★★

a month ago

This is already the third time we’ve brought our car to this shop and there is honestly no better place. Every visit has been smooth professional and handled with real care. They are honest transparent and take the time to explain everything clearly. You never feel pressured or overcharged and that kind of trust is priceless. The team is knowledgeable efficient and truly cares about doing the job right. It is such a relief to know we have a mechanic we can fully rely on. Highly recommend them to anyone looking for a trustworthy and professional auto shop.

Karla Cal

★★★★★

a month ago

Knowledgeable, honest, and trustworthy! My husband was driving my vehicle the other day when the check engine light started flashing and the vehicle went into limp mode. This was a repeated issue we were having and my husband was ready to go buy parts and try fixing it himself. He decided to call Cornelio first and see if he had any ideas of what it could be. Cornelio knew about an existing recall for our vehicle and suggested that we call the dealer with our VIN to see if we qualified. Long story short our vehicle was towed to the dealer and got an entirely new engine under warranty. A single phone call to Cornelio saved us time, money and a ton of frustration. If that’s not value add I don’t know what is. Thanks Cornelio!

NATALIE SOTO-MEHLE

★★★★★

6 months ago

I highly recommend 3:23 Automotive!! I had the most positive experience with them than I’ve ever had with an auto repair service. They were super prompt about communicating with me when I called in a panic right at closing time, and then they continued to provide touches that proved I had chosen a first-rate auto service. Cornelio sent a video explaining my car’s issue along with a timeline for completion and costs. They are honest, fair and competent, and I trust them completely.

Alexander Rodriguez

★★★★★

11 months ago

Cornelio is hands-down one of the best mechanics I’ve worked with. He’s honest, skilled, and really takes pride in his work. He explains things clearly, doesn’t push unnecessary repairs, and genuinely wants to help you get back on the road safely. You can tell he knows his stuff and cares about doing the job right. Highly recommend him if you’re looking for a mechanic you can trust!

Edgar Sandoval

★★★★★

a month ago

Amazing service every time! They’re very attentive, fast with repairs, and the work is always done right. Thank you to Cornelio and Lulu for making the process so smooth. 323 Automotive is the best!

Vince Hernandez

★★★★★

2 months ago

Cornelio, owner and mechanic of this auto shop is one of the best at what he does! He’s honest, caring and does professional service! My family,, friends and I trust in his work and his dedication and knowledge of the automobile industry! He’s the best!

J Sinsko

★★★★★

2 months ago

The mechanic is excellent!! The staff are friendly! I trust them 100% with getting my car fixed correctly the first time they work on it! I honestly cant say enough about the service I have received from them since I started taking my cars there!!!

Michael Moreno

★★★★★

4 months ago

Service is Top Quality! Cornelio always performs great and satisfying service and LuLu manages the front end with a timely manner. If you’re looking for an Honest Mechanic Cornelios your Man! I’m always Satisfied

Orion Stewart

★★★★★

6 months ago

Cornelio and Lulu at 3:23 Automotive were fantastic to work with! My truck needed quite a bit of attention, and they handled it quickly, professionally, and at a very reasonable cost. Lulu kept me informed every step of the way, and they took the time to walk me through every part of the quote. When any of my vehicles need service, 3:23 will be my first call!

Ann Warner

★★★★★

5 months ago

We had the most amazing experience! Everything was clearly explained, expertly repaired, and communication was amazing. The prices were very reasonable and the staff was amazing. We never thought our car would get back to normal after all of the damage, but when we picked it up, it was like having a brand new car! I will only bring my cars here for any repairs. Thanks so much!

Elias Loya

★★★★★

5 months ago

3:23 Automotive, a family-owned business, has established a reputation for trustworthiness and exceptional customer communication, which is a valuable asset in today's market. The difficulty in locating a reliable mechanic is well-recognized. Despite the distance of approximately 30 miles from Denver, the consistent quality of service at 3:23 Automotive makes the drive worthwhile, ensuring the vehicle receives dependable care.

Darrien Adams

★★★★★

3 months ago

I feel like every time I come in to get a service or oil change, I’m complaining about a tiny, faint noise. Every time, they listen and try to find the source. I’m taken seriously, which is huge. Being a woman, you’re not always taken seriously or given the same information a man might receive when accessing anything related to car services. I’m so thankful to finally find a mechanic that never makes me feel that way!!! Cornelio will send videos with any concerns, detailing what might be the problem and any solutions. I’m learning something any time I take my car in, which helps me know when I should actually be concerned in the future.

Michael van Gaalen

★★★★★

2 months ago

323 Automotive is amazing. They were friendly, helpful, fair, and honest. Finding a.trustworthy and good mechanic is so hard, and I’m extremely thankful that I was referred to 323 Automotive.