Recent Blog Posts

Automotive Sales, Service, and Repair

Hartford, WI | Erin, WI

12-Month/24,000-Mile Warranty on All Auto Repairs

We Work With All Insurance and Aftermarket Warranty Companies

Carfax Top-Rated Dealer

Hours:

Request a Call Back

Hero Request Form

Your Trusted Auto Repair Partner in Hartford

M&J Auto Sales & Service has been serving Hartford and surrounding communities since 2009. We're a locally owned, family-run shop where you'll find ASE-certified technicians with over 75 years of combined experience working on your vehicle. This level of skill means we've diagnosed and repaired just about everything that can go wrong with a car.

We believe in treating every customer the way we'd want to be treated ourselves. This approach has earned us a strong reputation and recognition as a CARFAX Top-Rated Dealer. We back our work with a 12-month/24,000-mile on all auto repairs parts and labor nationwide warranty so you can drive away with peace of mind. Contact us today!

Why Choose Us

Black checkbox with a check mark inside on a white background

ASE Certified Technicians

Checked checkbox icon in black outline

Quality Service

Checked checkbox icon with a black checkmark in a square outline

Great Reputation

M&J Auto Sales & Service
Black checkmark inside an outlined square checkbox icon on a white background

12-Month/24,000-Mile Warranty

Checkbox with a black check mark inside an outlined square

Works With All Insurance and Aftermarket Warranty Companies

Checked checkbox icon in black outline

CARFAX Top-Rated Dealer

Black oil can, tire, wrench, and spark plug icon on white background

Auto Repair Services

From diagnostics to complex mechanical repairs, our team handles everything your vehicle needs to keep running smoothly and safely on the road.
Black car icon with a check mark in a circle above it

Car Maintenance Services

Regular maintenance extends your vehicle's life and prevents costly breakdowns. We'll keep your car performing at its best with scheduled service.
Black bottle spraying liquid with motion lines on a white background

Exhaust System Repairs

Hear something loud or smell something off? Our technicians can diagnose and repair exhaust issues to restore performance and efficiency.
Black circular icon with a white ring and six small dots inside, resembling a wheel or button

Professional Tire Service

We offer tire sales, installation, balancing, and rotations to make sure you've got the right rubber for Wisconsin roads and weather conditions.
Black icon of a hand holding an electric hair clipper

Wisconsin State Emissions Testing Facility

M&J Auto Sales & Service provides expert emissions-related diagnostics and repairs to help your vehicle meet Wisconsin state emissions requirements.

Black circular icon with a white ring and six small dots inside, resembling a wheel or button

Professional Tire Service

We offer tire sales, installation, balancing, and rotations to make sure you've got the right rubber for Wisconsin roads and weather conditions.
Black car icon with a recycling symbol above it

Expert Used Vehicles

Looking for a reliable pre-owned vehicle? We sell quality used cars that have been thoroughly inspected by our experienced team.

Our Recent Projects

Turquoise ocean waves crashing with white foam in a close-up seascape
A winding river cutting through dense green forest canopy from above
Abstract rippled sand dunes with warm orange and purple shadows in soft light
Two overlapping black chat bubbles with ellipsis dots on a white background

Here's what our satisfied customers are saying...

At M&J Auto Sales & Service, we take pride in providing exceptional auto services to our customers. We would be grateful if you could share your thoughts about our business with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review of M&J Auto Sales & Service and let others know what you think.