Huntsville's Diesel Specialists

Diesel engines that run hard deserve a shop that knows them inside out.

From routine oil changes to heavy-duty diesel diagnostics, Fat Andy's delivers honest, no-surprise auto and diesel repair right here in Huntsville.

Call (256) 813-3027 Our Services
Locally Owned
Light & Heavy Duty
Honest Diagnostics
Mechanic working on a diesel engine in a Huntsville auto repair shop
What We Do

Full-service auto and diesel repair

Whether you drive a daily commuter or a Class 8 rig, we've got the tools, training, and parts to keep it on the road.

Diesel Engine Repair

Complete diesel diagnostics, fuel system service, turbocharging, and engine rebuilds for light and heavy-duty platforms.

Oil Changes & Fluid Service

Conventional, synthetic, and high-mileage oil changes with full fluid top-off and multi-point vehicle inspection.

Brake Service

Pad and rotor replacement, brake fluid flushes, ABS diagnostics, and complete brake system overhaul for all vehicle types.

Transmission & Drivetrain

Automatic and manual transmission service, clutch replacement, CV joints, and driveline repair for diesel and gas vehicles.

Electrical & Diagnostics

Advanced OBD-II scanning, wiring repair, alternator and starter service, and complex electrical troubleshooting.

Suspension & Steering

Shocks, struts, tie rods, ball joints, and wheel alignment to keep your vehicle tracking straight and riding smooth.

Interior of Fat Andy's Auto and Diesel Repair shop in Huntsville
About Us

Built on hard work,
kept running by honest mechanics.

Fat Andy's Auto and Diesel Repair is a locally owned and operated shop in Huntsville, Alabama. We specialize in diesel engine repair and full-service auto maintenance for both light-duty trucks and heavy-duty commercial vehicles.

We know that when your vehicle goes down, it's not just an inconvenience — it's a lost paycheck, a missed delivery, a broken schedule. That's why we treat every repair with the same care we'd give our own rigs: diagnose it right, fix it right, and don't sell you what you don't need.

Huntsville
Locally owned & operated
Light & Heavy
Diesel & gas vehicles
No Surprises
Transparent pricing
Quality Parts
OEM & aftermarket options
Why Choose Us

The repair shop Huntsville
trusts with their fleet

No Cut Corners

We do the job right the first time. No shortcuts, no temporary fixes that fail down the road.

Clear Communication

We explain what's wrong, what it costs, and what happens if you wait. You'll never be left guessing.

Fair & Upfront Pricing

We give you an estimate before we start. What we quote is what you pay — no hidden fees, no surprises.

Proven Expertise

Years of hands-on experience with diesel and gas engines means we diagnose faster and fix it right.

Ready to get your vehicle running right?

Stop by or give us a call. We'll diagnose the problem, explain the fix, and get you back on the road — fast.

Call (256) 813-3027 Get Directions
Contact Us

Visit us in Huntsville

Drop by the shop or give us a call. We're easy to find and always happy to help.

Address

125 Wholesale Ave NE
Huntsville, AL 35811-1517

Send Us a Message

Have a question or need a quote? Fill out the form and we'll get back to you.

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