Do you do diesel deletes or tuner-only builds?

No. We keep diesel work emissions-legal and do not install delete or defeat devices. We focus on repair and maintenance that keeps your truck legal to drive and register in Arizona.

Do you service the DPF and emissions system?

Yes. We service the diesel particulate filter and emissions system, kept legal. If it is clogging or throwing codes, we diagnose why before recommending anything, rather than just clearing it.

Do you do diesel injector and fuel system work?

Yes. Hard starts, rough running, and power loss often trace to the fuel system or injectors. We diagnose the real cause before replacing expensive parts.

How often should a diesel get an oil change?

Diesels have their own intervals and take more oil than a gas engine. We follow your manufacturer's schedule and adjust for how hard the truck works and the desert heat.

How much does diesel repair cost?

It depends entirely on the issue, so we diagnose first and then give you a straight explanation of what it needs before any work, no guessing and no surprise add-ons.

Do you service diesel work trucks and fleets?

Yes. Diesel work trucks and fleet vehicles are a core part of what we do. See our fleet page to set up ongoing service.

Diesel · Cummins & Power Stroke · Mesa, AZ

Diesel repair in Mesa, Arizona

Diesel engine repair and maintenance for trucks and fleets. Plenty of Cummins and Ford Power Stroke come through our bays, and we diagnose the real problem before touching a part. Near Baseline Road and Mesa Drive.

Call (480) 656-2586 Fleet Diesel Service

4.9★ on Google· Cummins & Power Stroke· Emissions-Legal· Baseline & Mesa Dr

4.9Rated on Google

Auto & fleet repair
Gas & diesel
Cars, trucks & fleets
Mon-Fri, 8:00 AM - 5:00 PM

Diesel done right

A diesel is a big investment, so the diagnosis matters most

The wrong shop can turn a small diesel issue into an expensive one. We diagnose the actual problem, explain it in plain language, and keep your truck running the way it should, whether it is your daily driver or part of a working fleet.

Fuel systems, injectors, turbos, cooling, DPF and emissions, glow plugs, and routine diesel maintenance, we handle the whole truck, gas and diesel, and keep every build street-legal.

Call (480) 656-2586 Request Service

Cummins repair

Ram and Dodge diesel. Diagnosis, repair, fuel and injector work, and the maintenance that keeps a Cummins truck reliable.

Ford Power Stroke repair

Ford Super Duty diesel. From routine service to more involved repairs, handled by people who know the platform.

Emissions-legal, always. We do not install deletes or defeat devices. Every repair leaves your truck legal to drive and register in Arizona.

Diesel services

Diesel engine repair and maintenance

One shop for the whole diesel, diagnosed straight and fixed right.

Diesel engine repair & diagnostics

Warning lights, hard starts, rough running, and power loss, diagnosed to the real cause on gas and diesel.

Fuel system & injectors

Diesel fuel system diagnosis, injector and pump issues, and the hard-start or power-loss symptoms they cause.

Turbocharger

Turbo diagnosis and replacement when boost is down or you hear the signs of a failing turbo.

Cooling system

Diesels run hot in Arizona. Coolant, radiators, and cooling faults handled before they cause real damage.

DPF & emissions

Diesel particulate filter and emissions-system service, kept legal, with no deletes or defeat devices.

Preventive maintenance & oil

Diesel oil, filters, and fluid service on a schedule that keeps a work truck earning, not sitting.

Glow plugs & electrical

Cold-start and electrical diagnosis so your diesel fires up and runs the way it should.

Steering & suspension

Work trucks carry weight all day. Clunks, wander, and worn shocks and joints, diagnosed and repaired.

Trusted with trucks & fleets

From one diesel to a whole fleet

A lot of the diesels we see are work trucks that have to earn their keep. We keep them on the road with honest diagnosis and preventive maintenance, and we handle the rest of the truck too, from steering and suspension to tires, mounted and balanced here.

Fleet Services Brake Repair Tires

“We recently had our fleet vehicles serviced at Mesa Auto & Fleet, and the experience was excellent. Landon and Brandon were both great to work with: professional, responsive, and thorough throughout the entire process. They made everything smooth and hassle-free. Mesa Auto & Fleet has definitely earned our future business, and I highly recommend them to anyone needing reliable fleet service.”

SickSlab · via Google

Reviews

What truck and fleet owners say

“Did a great job on my work van, took me in and got everything done quickly. Good pricing and easy to communicate with”

John Paulvia Google

“Quick, honest, and reliable service. I took my truck in for a coolant leak that I had been chasing for months. They got it fixed same day! It has been months still no coolant leak. I was so impressed with the service that I referred my mom to Mesa Auto and Fleet for a water pump issue on her vehicle. Would highly recommend them for any auto needs.”

Bryce Garstvia Google

“Finally found a totally honest mechanic! Landon was professional, reasonable, and communicative. I highly recommend this business!”

Dan Maggivia Google

Diesel mechanic in Mesa

Right near Baseline & Mesa Dr

Find the Shop

Baseline & Mesa Dr

Look for the Mesa Auto & Fleet sign above the bay doors at 416 E Baseline Rd, Suite 6.

416 E Baseline Rd, Suite 6, Mesa, AZ 85204
Mon-Fri, 8:00 AM - 5:00 PM
Closed Saturday & Sunday

Get Directions View on Google

Mesa Auto & Fleet shop exterior near Baseline Road and Mesa Drive in Mesa

Baseline & Mesa Dr416 E Baseline Rd, Suite 6

FAQ

Diesel repair questions, answered

We service diesel and gas vehicles, and we see a lot of Cummins (Ram/Dodge) and Ford Power Stroke (Super Duty). Tell us what you drive and what is going on.

Get Started

Bring us your diesel

Call (480) 656-2586 or send a request, and we will diagnose it and give you a straight answer before any work.

Call (480) 656-2586 Request Service Ask About Fleet Get Directions

Mon-Fri, 8:00 AM - 5:00 PM · Closed Saturday & Sunday. Submitting a request isn’t an instant booking, we’ll call or text to confirm a time.