Comprehensive Diagnostic Testing

Accurate Solutions for Your Vehicle Issues

Experts in Diagnostics

Have you visited several shops, but none have been able to properly fix your vehicle? At Zarn Automotive, we specialize in comprehensive vehicle diagnostics to get to the root of the problem and provide accurate solutions. Zarn Automotive excels in diagnosing and repairing complex issues using advanced OBD (On-Board Diagnostics) tools and techniques. Our expertise includes:

  • Electrical concerns
  • Engine Control Modules (ECM)
  • Computer Control Modules (PCM)
  • Transmission Control Modules (TCM)
  • Intermittent Issues Within Reason: We need to be able to recreate the problem to diagnose it accurately
Gloved man checking the oil on a motor vehicle

Why trust Zarn Automotive with your car's computer diagnostics, maintenance, and repairs?

  • Expertise You Can Trust: With over 14 years of industry experience, Zarn Automotive boasts a team of expert technicians who are dedicated to delivering top-notch service and repair solutions for all vehicle makes and models.
  • Comprehensive Services: From routine maintenance to complex repairs, we offer a wide range of automotive services to meet all your vehicle's needs under one roof, saving you time and hassle.
  • Customer Satisfaction Guaranteed: At Zarn Automotive, we prioritize your satisfaction above all else. With transparent communication, fair pricing, and a commitment to quality workmanship, we strive to exceed your expectations with every visit.

Schedule a Comprehensive Diagnostic Service with Zarn Automotive Today.

Don't let unresolved issues keep you from enjoying your vehicle. Our expert team is dedicated to providing precise auto diagnostic and repair services to keep your car running smoothly.

Reviews

kody judkins

kody judkins

2/12/2026

I recently took my wife’s 2017 Mercedes GLS450 to Zarn Automotive, and while car issues are never fun - especially right before the holidays... the team there made the experience as smooth as possible. They were honest, transparent, and provided a clear plan for the necessary repairs. They fixed the coolant system issues and installed a new drive belt. Micah and Neil were incredibly professional and straightforward about everything that needed attention. We’ll be scheduling some follow‑up work, but I truly appreciate their honesty, hard work, and the fact that they got the car back to us before Christmas Day. Highly recommend this team. Edit: This team continues to deliver on everything and more! I recently got the motor mounts, crankcase breather assemble, and intake manifold gaskets taken care of. The techs S Ekstrom and N Shellady got the car knocked out in no time. Special thanks to Micah and the whole team at Zarn.

Becky Moseman

Becky Moseman

12/15/2025

In the last 8 months I've used Zarn twice-- most recently to fix an electrical issue with sensors and previously to diagnose and eventually replace my transmission. Their customer service is stellar. I was in a time crunch this past weekend needing to know if my car was drivable out of town for a soccer tournament. They got me in quickly to diagnose the problem and managed to get my car repaired and ready to drive for the weekend. I know that isn't possible all the time but it really helped me out. Zarn communicates well and timely. Their prices are reasonable. Mostly, they are honest and not trying to upsell on anything. They are patient and take time to answer all my questions about car stuff I don't understand. This is why I'm a repeat customer.

Mary Deason

Mary Deason

10/31/2025

They took the time to let me explain and drive the vehicle to show the noise that has been haunting me for some time. It just so happened it wasn't being loud that day so we had to make small movements and barely catch the sound and the tech was able to recreate the sound under the engine and figured out it was the engine mount. They replaced it the same day and I took my vehicle home the same day. Kia told me they had to keep the car for a minimum of 12 days before even looking at it... people don't have time to drop off a vehicle for 2 wks before even being told what's going on. Even though I had an extended warranty, I chose to pay out of pocket and I'm glad I was only without my car for 1 day. Very pleased with Zarn start to finish. Every person I spoke with that day (there were 3) were all very polite and kind as well.

Barbara Munter

Barbara Munter

11/25/2025

Neil and his team have taken care of my Porsche and Lexus for years, they are Excellent to work with!!! The maintence oil changes and regular maintence is WAY more cost effective than the dealership!!! Always quick to respond and top notch customer service!!! I Highly Recommend you give Neil and his team a try, you will not regret it!!!!

Mike Freeman

Mike Freeman

10/24/2025

First time using Zarn, for transmission service on my Alfa Romeo Guilia. Called & spoke with Micah, who texted me a detailed estimate. Very friendly, courteous & professional. Seemed knowledgeable, got me in and out in a reasonable time, price matched the estimate. They do walk-in/same day on routine service. Will definitely be back & would recommend

Contact Zarn Automotive

2010 N. Yellowood Ave, Broken Arrow OK 74012

zarnautomotivellc@gmail.com

MONDAY8AM - 5PMTUESDAY8AM - 5PMWEDNESDAY8AM - 5PMTHURSDAY8AM - 5PMFRIDAY8AM - 5PMSATURDAYCLOSEDSUNDAYCLOSED

Schedule Service

Fill out the form below and our representative will get back to you ASAP with available times.

Need service sooner than ASAP? We understand. Give us a call! (918) 940-7800