M&M Auto Techs

When your vehicle needs professional attention in Fontana, California, you can count on M&M Auto Techs Fontana to deliver reliable auto repair services that keep you safely on the road. Our experienced technicians understand the unique driving challenges of navigating the busy corridors of Sierra Avenue and the surrounding San Bernardino County area. We provide comprehensive auto repair services for all makes and models, from routine maintenance to complex diagnostics.

Located at 9433 Sierra Ave., Fontana, CA 92335, M&M Auto Techs operates as an auto electrical shop serving Fontana in California. This page gathers the practical details people usually look for before visiting: where it is, how to reach it, when it opens and how customers rate it. Google also lists it under auto repair shop, auto parts store, auto tune up service, which is worth knowing if you are comparing several options in the area.

In Fontana, shops are busiest on Monday mornings and before holiday weekends, so a mid-week appointment gets a car seen faster. Labor rates across California vary by neighborhood and by shop type, from small independents to dealership service bays, and mobile mechanics now cover many routine jobs in the driveway. Before authorizing a repair, ask for the estimate in writing, whether the shop warranties parts and labor (12 months / 12,000 miles is common, some offer more), and whether it can provide a loaner or a shuttle. Check the listing for hours, the makes the shop works on and its Google rating, then call ahead, since walk-in capacity is limited at smaller shops.

The business lists hours on 6 days of the week. On most of those days it is open 8 am–6 pm. Note that it does not open on Sunday. As with most places, expect changes around holidays; the phone number below is the fastest way to confirm. You can reach M&M Auto Techs at (909) 251-4371; calling is usually the quickest way to ask about availability, prices or directions. More information is available on its website, mmautotechs.com.

Customers rate it 4.8 out of 5 on Google across 366 reviews, placing it among the better-regarded auto electrical & batteries in Fontana.

Fontana is in California, on the West Coast, where the climate ranges from foggy coast to hot inland valleys, wildfire season can affect air quality in late summer, and traffic is the main thing to plan around. Traffic in Fontana peaks on weekday mornings and afternoons, so allow extra time then. Addresses read from the street number up to the city, state abbreviation and five-digit ZIP code; the map link on this page shows the exact spot.

See the other auto electrical & batteries in Fontana listed below to compare ratings, hours and locations before you decide. If you own or manage M&M Auto Techs, you can claim this listing to correct details, add photos and a description, and receive a verified badge. Everyone else can help by leaving an honest review on Google after a visit.