Choose Rainbow Muffler to maximize your exhaust system performance.

Choose Rainbow Muffler to maximize your exhaust system peformance.

Our technicians are qualified to handle everything from light to heavy engine repair.

Our technicians are qualified to handle everything from light to heavy engine repair.

Rainbow Muffler has the latest state-of-the-art automotive cooling system diagnostic and repair technology.

Rainbow Muffler has the latest state-of-the-art automotive cooling system diagnostic and repair technology.

Who We Are


Rainbow Muffler is a full service auto and truck preventive maintenance and auto repair center in McDonough, GA. We specialize in vehicle maintenance service, electrical service, transmission services, heavy duty services and much more.

Rainbow Muffler's certified experts have over 45 combined years of experience and the knowledge to service and repair even the most challenging automotive problems on all makes and models. Our technicians are trained and certified. We use the latest technology to assess the situation and offer you alternatives.

We guarantee all our work and know you will be happy with the outcome. Stop in, or give us a call today and let us know how we can help you. Come as a customer, leave as a friend!

Turn to Rainbow Muffler for all your auto repairs & vehicle maintenance needs. We look forward to the opportunity to serve you.

WHY CHOOSE US


We are fair and affordable

Customers come back when they are treated right and billed a fair amount for our work. Other places try to overcharge, betting you will never come back.

Good reputation

This is not a large chain shop. We are an independent automotive repair shop and our name is on the building; lackluster workmanship is not an option.

Our experience

Our service professionals with years of experience are highly trained, so they know what they are doing, learning and adapting to changing automotive platforms.

our services


We offer a variety of services to help you get back on the road and keep your life safer

learn about your vehicle


The muffler on a vehicle is designed to reduce the amount of noise coming from the exhaust system of your automobile. The muffler quiets the sound pressure that the engine creates by using acoustic quieting, which means the muffler dampens vibrations to prevent them from reaching the passengers.

1. Loud Noises

2. Lower MPG

3. Bad Smells

 Notice these things? Give us a call!

Testimonials