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Auto Addition

About Us

Auto Addition is a premier car accessories store located in Mishawaka, IN, that has been serving the surrounding areas since 2019. We offer a wide range of products to enhance every vehicle. In addition to our top-notch accessories, we also provide expert services including auto detailing, glass replacement, and much more. Experience the ultimate in automotive customization and care at Auto Addition.

Areas Served

Our Professional Associations

Member of the Professional Installer Network

Our Certifications

Authorized Dealer for Viper
Clarion Authorized Dealer
NFIB
Weather Tech Diamond Dealer

What We Offer

Our Specialties include:

Moon Roof Installation
Glass Replacement
Alarm Remote Start
Window Tinting

Our Services include:

Auto Detailing
Glass Replacement
Trailer Hitches
Trailer Wiring
Window Tinting
Car Accessories Installation
Car Audio
Sunroofs
Alarm Remote Start

Our Brands include:

Weather Tech
Life Saver
Sony
Pioneer
JVC
Viper

Our Products include:

Car Accessories
Remote Start
Alarms
Floor Mats
Glass
LED Light Strips
Stereos
Amp Speakers
Sub Speakers
Security Systems
Sunroofs
Step Bars
Hitches
Moon Roofs
Grilles

Testimonials

On 5/18/2026 Mark Suhovecky had this to say:
I've had 4 trailer hitches and brake controllers installed over the years on Hondas, Hyundais, and Subarus. Highly recommend.

On 3/12/2026 Paul Wulff had this to say:
Great service great prices Testimonial written by Paul Wulff on this site.

On 3/5/2026 Kash Killinem had this to say:
Walked inside And Purchased Two 12's, And Amp, Touchscreen Radio And They Installed All Of It Less Than 3 Hours! Highly Recommend Them For Audio System!

On 11/21/2025 Martine Mango had this to say:
Dave was awesome. I needed A new windshield stat for my car. Not only did Dave have the cheapest price in town but he had it installed in 2 1/2 hours and I was on my way to work!! Simply the best!!

On 7/18/2025 Cherri Jackson had this to say:
This is the place to go for fixing your sunroof! One of the only places around that works on them and does it correctly! Thanks!

Contact Us

Auto Addition
905 E Mckinley Ave Mishawaka, IN 46545
Phone: (574) 256-2451
Email: autoonemish@comcast.net

Where To Find Us

Payment Types Accepted

Discover, American Express, Debit Cards, MasterCard, Visa, PayPal, Apple Pay, Android Pay

Our Hours

Holiday Hours May Vary. Please Call For Details.

Monday: 9:00 AM - 6:00 PM
Tuesday: 9:00 AM - 6:00 PM
Wednesday: 9:00 AM - 6:00 PM
Thursday: 9:00 AM - 6:00 PM
Friday: 9:00 AM - 6:00 PM
Saturday: 8:00 AM - 12:00 PM

FAQ

Do you install remote start and alarm systems for all vehicle makes and models?

Yes! We professionally install remote start and alarm systems for most domestic and foreign vehicles. As an authorized Viper and Clarion dealer, we carry the top brands you can trust.

What types of car audio systems do you carry and install?

We offer a wide range of premium car audio options, including stereos, amplifiers, subwoofers, and complete sound systems. Our experienced technicians can recommend and install the perfect setup for your vehicle.

Can you tint windows to meet Indiana or Michigan legal requirements?

Absolutely. Our expert window tinting services comply with local regulations in Indiana and Michigan. We also offer various shades and UV protection options to suit your needs.

Do you offer trailer hitch installation and wiring for towing?

Yes, we install trailer hitches and provide professional wiring services for safe, reliable towing. Whether it’s for a utility trailer or recreational use, we can set you up.

What accessories do you carry for vehicle customization?

From WeatherTech floor mats and LED lighting to step bars, sunroofs, grilles, and security systems, we have everything you need to customize your car or truck—all installed by our expert team.