Car Service
$10 Off $100 of Labor
Receive $10.00 off $100.00 of labor during your next visit to 521 Automotive!

Oil changes excluded. Limit one per customer. May not be combined with any other offer or promotion. Coupon must be presented in advance.

Welcome to
521 Automotive

From small repairs and maintenance to large auto repair jobs and custom performance upgrades, our local and family-owned auto shop provides a wide range of services. Each of our Mesa auto mechanics has extensive experience, is ASE Certified, and provides top-quality customer care. If you’re looking for a truly trusted and top-rated auto shop in the Mesa, AZ area, contact us today to receive a free estimate for our services from one of our certified auto technicians.

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The Meaning Behind 521

Now to answer the question that we get asked most: what does our name mean? Life is all about the small, meaningful moments in it, and our business is no different. Owner Bill came up with the name 521 Automotive and was somewhat secretive to the meaning, but Mariah, his then-girlfriend, thought it sounded cool and different - so why not! However, soon enough Mariah learned the true meaning of the name. Shortly after naming the business, Bill asked Mariah to marry him, and wanted their wedding to be on May 21st, hence 521 Automotive. So, on May 21st, 2016, Bill and Mariah were married in New Orleans. 521 Automotive is a family-run business that we put our hearts into and truly is a part of us.



  • Low Minimum Monthly Payments
  • Convenient Monthly Billing Statement
  • Online Account Management
  • Simple Credit Application
  • Instant Credit Decision
  • Receive Card Within 7-10 Days
  • Promotional Financing Offers
  • Doesn’t Tie Up Other Credit Lines
  • New Purchasing Power
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Auto Repairs

From small repairs such as headlight replacement, taillight replacement, and engine diagnosis – to large repairs like engine repairs and replacement, our team of expert Mesa auto repair technicians in Mesa, Arizona, can help.

Regular Maintenance

It’s important to have a trusted Mesa auto maintenance mechanic on your side for regular maintenance. At 521 Automotive, we provide oil changes, suspension, brake, and tune-up services, plus a lot more. We also diagnose issues during oil changes to help prevent large repairs.

Motor Swaps

Are you in need of a motor swap mechanic for your vehicle, or are you looking to swap the engine in your classic car for improved performance? You’re in luck. The 521 Automotive team in Mesa has worked with countless motor swap projects.

Auto Performance

Looking to boost the performance of your vehicle with custom exhaust, turbo, super charger, or through custom engine build? No matter your performance dreams, the custom automotive service team at 521 Automotive in Mesa can help you make it happen.

Transmissions & Engines

Does your transmission need repairs or a full replacement, or is your engine in need of replacement or repairs? Our Mesa engine repair experts are here to help. Contact 521 Automotive today to schedule an appointment, or call us.

Hot Rods & Classics

If you own a hot rod or classic car and are looking for a full or partial restoration, need to find a part, or need a trusted classic car mechanic in Mesa to provide you with ongoing care, 521 Autmotive is the Mesa mechanic shop for you. Call today!



Isuzu commercial vehicles are a very common vehicle seen all over the valley. Isuzu has conquered the commercial vehicle market worldwide by creating a reliable, environmentally-friendly vehicle. Isuzu commercial vehicles can run for many years with proper maintenance, and we feel it is crucial to make sure your commercial Isuzu is running at its maximum proficiency. A unique detail about 521 Automotive is we have the factory Isuzu diagnostic tool to service Isuzu NPRs and NQRs. We believe in the importance of doing the job right, and in having the right tools and knowledge to do so. This not only means faster diagnostic times, but also means saving our clients money. Here are some of the Isuzu repair services we offer:

  • Oil Changes
  • Brake Jobs
  • DPF Regeneration
  • Diagnostic Services
  • A/C Repair
  • Hydraulic Dump Bed Repairs


At 521 Automotive, we offer first-rate automotive repair service in Mesa, Arizona. Our goal is to generate a long-lasting connection with each of our clients. You are our first priority, then your vehicle. We provide quality work at a fair rate. With over 20 years of automotive experience, we are able to provide great service and expertise. Owner of 521 Automotive, Bill, is an ASE Master Certified Automotive Technician who has a vast knowledge in just about anything that is propelled by a motor and provides exemplary auto repair and maintenance services. We take pride in being able to deliver an honest diagnosis and handle meticulous work. We treat your vehicle as if it were our own while it is in our shop. We want to make sure you are safe and satisfied with our work and staff.


521 Automotive is a locally and family-owned business growing in the Mesa community, and we strive to be your trusted family mechanic. Making sure that you feel safe and secure while driving your family is our top priority. This is why at 521 Automotive, we have an open door policy for all of our clients. We enjoy it when our clients stop in to ask questions about their vehicles, or just to say hello! This open door policy applies to your vehicle too. You drive your vehicle everyday and know it best, so trust your instinct and let us take a quick look at your vehicle if something doesn’t seem right to you. In most cases, the sooner you stop in to our Mesa auto repair shop, the better. This way, we can fix a small issue before it becomes a devastating one and save you money down the road.




Our automotive know-how envelops extensive knowledge of every aspect of your vehicle. We can do it all! To us, it isn’t all about selling you a service; at 521 Automotive, we believe in informing and teaching our clients. This provides you with a better understanding of your vehicle and allows us give you as many options as we can so you can decide what is best for you and your family. To help you avoid the unexpected breakdown, we complete an inspection on your car during each oil change. This helps us to keep ahead of most of those unexpected vehicle disasters and gives us a way to make a plan together and to schedule preventive services that will help you avoid the larger unexpected and unwanted repairs. Another service we offer is a ride home or to work while we work on your vehicle.

What Our Clients Say

Vivian P.
“ Bill is great!! I am new to Phoenix so did not have a mechanic. Got a referal for 521 and it is the best thing that could have happened. My Jeep was diagnosed quickly and I was given a complete evaluation, repairs were done quickly and a much better price than I could have hoped for. Now I have a mechanic. ”
Amy Shamhart
“ Bill did an outstanding job working on my nieces car. He is very knowledgeable and explains things in detail do you understand. He is very honest and has very reasonable prices. I would highly recommend 521 automotive. ”

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521 Automotive is committed to ensuring effective communication and digital accessibility to all users. We are continually improving the user experience for everyone, and apply the relevant accessibility standards to achieve these goals. We welcome your feedback. Please call 521 Automotive (480) 248-8469 if you have any issues in accessing any area of our website.