M&M Auto & Diesel — because you want it done right.

We are a family-owned automotive repair shop proudly serving Monett and the surrounding areas since 2009. Our mission is to help our neighbors keep their vehicles running smoothly, safely, and reliably.

Every vehicle that comes through our shop is treated as a priority. We follow our “300% Rule”—every vehicle receives a complete inspection, and we share all findings with you. Each visit includes a complimentary 40-point inspection, where our ASE-certified technicians provide detailed explanations and photos for full transparency and clarity.

If your vehicle is experiencing issues, we offer a free 15-minute, no-wrench inspection to help you understand the problem and decide on the best next steps.

Our Mission Statement
We are dedicated to the well-being of our community by helping ensure reliable transportation. Through a welcoming environment and expert care, we repair what’s broken and improve what’s working—so every customer leaves satisfied, confident, and knowing they have a trusted partner they can rely on.

At M&M Auto & Diesel, we follow a process built around transparency and attention to detail. Every vehicle that comes in for service receives a complimentary 40-point inspection, helping us spot concerns early and give customers a better understanding of their vehicle’s overall condition. Our ASE-certified technicians share findings clearly, often with details and photos, so you can make informed decisions with confidence.

If something does not feel right with your vehicle, we also offer a free 15-minute no-wrench inspection to help you decide what steps to take next. That extra level of care reflects how we serve our community every day. We are here to repair broken vehicles, improve good ones, and give drivers peace of mind every time they visit.