We are not just mechanics, but rather car enthusiasts

North County's Premier Shop for Performance Exhaust, Trailer Hitches, Automotive Repairs & Classic Car/Hot Rod Restoration.

DEDICATED TO EXCELLENCE

Sonny’s Muffler & Auto is a family-owned and operated business in Fallbrook, California that is dedicated to our customers’ complete satisfaction. Our goal is to provide our customers exceptional automotive products, services, and the craftsmanship they deserve at competitive prices.

Sonny has over 25 years experience in building custom exhaust systems, performance upgrades, trailer hitch installation, repairing and replacing exhaust manifolds. Our customers can depend on us to replace brakes, suspension work, vehicle maintenance, including oil changes & tune-ups.

Sonny & Matt have expanded the business over the last few years to include restoration, repair, modernization, and customization of classic cars, muscle cars, and hot rods. See our gallery for a look at all our projects. What makes us different is the relationships we build with our customers, and the time we are willing to spend to assure the customer always get what they are looking for.

Our reputation is our best advertising, so our customers can always be assured they will never be sold a part they don't need, and they will leave our business completely satisfied. We look forward to EARNING your business.

Services We Offer

Automotive Services

Exhaust

CATALYTIC CONVERTERS

TRAILER HITCHES & ACCESSORIES

SUSPENSIONS & STEERING

BRAKES

Tune-Up & Maintenance

HEATING & COOLING

SAFETY INSPECTIONS

WELDING & FABRICATIONS

Classic Car & Hot Rod Services

ENGINE & DRIVETRAIN

SUSPENSION & STEERING

Sonny's carries all the top brands for our customers.

Our customers are our best advertising

My car runs so good after bringing it here! Thank you so much, I have taken my car to other places and never had it checked it as thoroughly. Extremely nice, honest, fast, and thorough repair shop. This is definitely my go-to shop for maintenance and repairs from here on out.

Stephanie

He'll treat your car as if it was one of his own. I honestly can't say enough good about my experience with Sonny and his shop. Forget everyone else, bring your Rod, custom, classic, specialty car or everyday auto/truck here for his services - you won't regret it. Dollar for service, I doubt there's much true competition in the whole of SoCal. Awesome.

Adam

I came to the shop to have my Mercury Grand Marquis converted to dual exhaust. Matt put together an awesome Magnaflow system, H pipe, and chrome tips. Sonny did the work and you would have thought he was working on a Rolls Royce with the care and precision he was putting into my car. The H pipe he made was perfect. Everything looks absolutely perfect and it sounds great! I highly recommend Sonny's Muffler shop and will never go anywhere else.

Steve

I wanted to say thank you so much! The exhaust you put on is perfect! There open on Saturdays so you can't beat that for all you marines/sailers out there that might work all day.

Luke

I had an old truck that needed exhaust work. Sonny's did a great job in a reasonable amount of time for a great price! I can't say enough about the quality of the work that they did! I highly recommend them.

Vern

Sonny and Matt have done great work on 3 of my vehicles and I plan on continuing taking my business to these guys. Very honest, reasonable prices and quick turnaround on the vehicles. Definitely recommend.

David

Sonny and Matt are the best. They have worked on many of my vehicles and have always done perfect work with resonable prices. I had them install an H-pipe on my 2018 Mustang GT, it sounds sooo good.

S Durick

Few businesses owners treat you like a family member, Sonny stands alone at the head of that class. Thank you Sonny.

Jeff Alfonso

Sonny and his staff are trustworthy and professional. They do quality work and they don’t try to run up the price.

Jonathan

Sonny is the best. Been going to him for years. great work and a great guy! A+ business.

Alexander

Matt is a prodigy! I am thrilled with all the work he has done on my 1964 Pontiac.