Serving Mesa, AZ Since 2020

Precision Diesel
Performance
& Heavy Duty Care

From Cummins diagnostics to high-performance tuning, we deliver automotive excellence with a commitment to transparency and craftsmanship that keeps Mesa moving.

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Specialization

Cummins Diesel

Expert diagnostics and repair for 5.9L, 6.7L, and 6.7L High Output engines.

Performance

Dyno Tuning

Unlock your vehicle's potential with custom ECU programming and bolt-on upgrades.

★★★★★

Trusted Local Mechanics

Our Expertise

Comprehensive Auto Care

Diesel Diagnostics

Advanced scanning and troubleshooting for Cummins, Duramax, and Power Stroke engines. We find the problem others miss.

Performance Tuning

Custom ECU flash tunes, cold air intakes, and exhaust systems designed to maximize horsepower and torque safely.

General Maintenance

Oil changes, brake service, suspension work, and fluid exchanges. Keep your daily driver running smoothly.

Transmission Service

Expert transmission rebuilds, fluid flushes, and repair for both automatic and manual setups.

Pre-Purchase Inspections

Buying a used truck? We perform comprehensive inspections to ensure you're making a smart investment.

Custom Fabrication

Exhaust systems, lift kits, and specialized fabrication work to get your build exactly how you want it.

5+ Years Exp.

About Lorenzo's

Built on Trust,
Powered by Passion

Located in the heart of Mesa, Lorenzo's Auto Repair started with a simple mission: provide honest, high-quality automotive service that big shops often overlook.

Whether you're driving a daily commuter or a modified diesel truck, we treat every vehicle with the same level of precision and care. We don't just fix cars; we build relationships with our customers based on transparency and results.

ASE Certified Technicians

Qualified experts for complex repairs

Transparent Pricing

No hidden fees or surprise charges

What Our Clients Say

"I brought my 2500 Cummins in for some performance work. Lorenzo's was the only shop in Mesa that took the time to explain the tuning options clearly. The truck runs amazing now."

Michael R.

Mesa, AZ

"Honest mechanics are hard to find. They diagnosed my check engine light quickly and didn't try to upsell me on things I didn't need. Highly recommend for general repairs."

Sarah J.

Gilbert, AZ

"Great atmosphere and professional service. They handled my suspension lift perfectly. The shop is clean and the team is knowledgeable about modern diesel tech."

David K.

Chandler, AZ

Get In Touch

Ready to Schedule?

Give us a call or stop by the shop. We are ready to assist with your automotive needs.

Visit Us

748 W Southern Ave
Mesa, AZ 85210-5007

Call Us

(148) 238-8799

Hours

Mon - Fri: 8:00 AM - 6:00 PM
Sat: By Appointment
Sun: Closed

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Precision Diesel Performance & Heavy Duty Care