We offer full-service auto repair in Caldwell, ID, including diagnostics, labscoping, brake repair, engine repair, A/C and HVAC service, suspension repair, steering repair, maintenance, custom exhaust, muffler repair, catalytic converter service, and Intoxalock services.
Full-Service Auto Repair in Caldwell, ID
custom exhaust welding sparks under vehicle on lift
Caldwell's Trusted Auto Shop
American Muffler & Auto Repair is a family-owned Caldwell auto shop led by Owen Mahaffey. We specialize in diagnostics, labscoping, A/C and HVAC service, suspension, brakes, steering, engine repair, custom exhaust, catalytic converter work, and Intoxalock services—for fleet customers and everyday drivers across the Treasure Valley.
Complete Auto Repair Services for Caldwell Drivers
From diagnostics and engine repair to brakes, A/C service, suspension, maintenance, and custom exhaust, American Muffler & Auto Repair keeps Caldwell drivers safely on the road.
Family Owned & Operated
Reliable Auto Repair in Caldwell, ID Backed by Local Trust
Trusted by drivers across Caldwell and the Treasure Valley
4.8
Rating
288+
Reviews
5+
Years
Full-Service Auto Repair
From diagnostics and brakes to engine repair, A/C service, suspension, and maintenance, we handle the repairs your vehicle needs.
Custom Exhaust Specialists
We offer expert custom exhaust work, muffler repair, and catalytic converter testing and replacement, all in one local shop.
Certified Local Technicians
Our ASE-certified team provides skilled diagnostics, honest recommendations, and dependable workmanship for Caldwell drivers.
24-Month / 24,000-Mile Warranty
Our work is backed by a continental U.S. warranty program that includes towing, roadside assistance, and lockout assistance.
Caldwell, ID Drivers Trust Us for Auto Repair
From diagnostics and brake repair to engine work, A/C service, and custom exhaust, American Muffler & Auto Repair is a trusted local shop for reliable auto repair in Caldwell, ID.
“Amazing shop! They went out of their way to make sure my car was done early for my own personal scheduling needs! After many bad experiences with mechanics.. these guys know what they are doing! 10/10”
Aleena Wieland
★★★★★Our Process
How Our Auto Repair in Caldwell, ID Works
We make it easy to understand what your vehicle needs, approve the right repairs, and get back on the road with confidence.
Call or Stop By
Tell us what your vehicle is doing, whether it is a strange noise, warning light, A/C issue, brake problem, or exhaust concern.
Diagnostics & Inspection
Our team performs honest diagnostics, labscoping, and inspections to find the real issue before recommending repairs.
Approve the Repair
We explain the problem clearly, review your repair options, and only move forward with the work you approve.
Get Back on the Road
From brakes and engine repair to HVAC, suspension, maintenance, and custom exhaust, we complete the repair and help keep your vehicle road-ready.
Need auto repair in Caldwell, ID? Tell us what's going on with your vehicle and we'll help you take the next step.
Contact us
Schedule Auto Repair in Caldwell, Idaho
Contact American Muffler & Auto Repair to schedule diagnostics, brakes, engine repair, exhaust, A/C, suspension, or fleet service.
