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Auto Repair Shops and Mobile Mechanics in O'Fallon, MO

MechanicRank lists 10 auto repair businesses in O'Fallon, MO. 5 run auto repair shops you can drive to. The best rated with a real review history is Childs Tire, at 4.9 stars from 1,468 reviews. Every listing shows the phone number, hours and reviews. Or send one free quote request and a local mechanic calls you back.

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Service Types 5
Auto Repair Shops 5 Heavy Duty & Fleet 1 Trailer & RV Repair 1 Tire Shops 1 Specialty Services 2

Map of Mechanics in O'Fallon

10 pinned locations · open the full MechanicRank map →

All Auto Repair and Mobile Mechanics in O'Fallon

10 independent businesses in our directory.

Getting a Car Fixed in O'Fallon

Independent shops in Missouri usually charge $85 to $125 an hour for labor, which is below the national average. A quote is the book time for the job times that rate, plus parts. At Missouri rates, a serpentine belt replacement runs about $70 to $240 and a transmission fluid change runs about $120 to $350 for a midsize car.

Of the 10 O'Fallon listings that post their hours, 2 open on Saturday. 4 open before 8 AM on weekdays, which helps if you need to drop the car off before work.

9 businesses in O'Fallon have at least 15 reviews, enough for a rating to mean something, and 7 of those hold 4.5 stars or better. Half of them have 214 or more reviews. A shop with a long history and a 4.6 is a safer call than a perfect 5.0 from a handful of people.

For work a general shop may turn away, O'Fallon has 1 tire shop, 1 RV and trailer shop and 1 heavy duty and fleet shop. Call ahead with the year, make and model so you do not waste a trip.

Cars more than 10 model years old or with 150,000 miles or more need a safety inspection every two years, with even model years tested in even years and odd in odd years. Cars registered in St. Louis City, St. Louis County, St. Charles County and Jefferson County also need an emissions test on the same schedule. A 2026 bill to end safety inspections in 2027 did not become law. Details are on the Missouri Department of Revenue and Missouri State Highway Patrol site.

Owning a Car in O'Fallon

36Days a Year at 90°F or Hotter
105Nights a Year at or Below Freezing
44Inches of Rain a Year
14Inches of Snow a Year
26Minute Average Commute
2.01Cars per Household
5%Households With No Car
75%Drive to Work Alone

Summers here bring about 36 days at 90°F or hotter. That is enough to finish off a tired battery or a weak AC compressor, so get both checked in spring rather than on the first hot day.

Lows drop to freezing on about 105 nights a year. Cold is when a weak battery finally fails, because a cold engine takes more power to turn over. O'Fallon averages 14 inches of snow, and road salt eats brake lines, exhaust and the underside of the car. Rinse the underbody through the winter and have the brake lines looked at whenever the car is up on a lift.

About 44 inches of rain fall in a year. Worn tires lose grip on wet roads well before they look bald, and streaky wipers are a cheap fix worth doing before the wet season, not during it.

The average commute in O'Fallon is 26 minutes each way, and 75% of workers drive there alone.

Sources, checked October 13, 2026

  • Weather: NOAA U.S. Climate Normals 1991-2020, station Weldon Spring Nws
  • Households and commutes: U.S. Census Bureau, American Community Survey 2020-2024, O'Fallon city

Pre-Purchase Inspections in O'Fallon

Buying a used car in O'Fallon? PPI Auto, our sister company, sends an inspector to the car for $225 on most cars, pickups and SUVs. That is a 122 point check with a full scan and a road test, and the report comes back the same day. Dealer lot, private seller or auction, it works the same.

The nearest PPI Auto city is St. Louis, about 30 miles away, and inspectors drive out to O'Fallon.

Missouri requires inspections, but a passed sticker only means the car met the minimum on that day. It says nothing about the transmission, the frame or a leak that starts next month.

Book a $225 Inspection Call 951-267-8500

Questions About Auto Repair in O'Fallon

How many auto repair businesses are there in O'Fallon?

We list 10 in O'Fallon, MO. That covers mobile mechanics, workshops, diesel and heavy duty specialists, body shops and tire shops. Every one has its own page with the phone number, what they work on and the reviews we have found.

Who is the best rated mechanic in O'Fallon?

Childs Tire currently holds the highest rating in O'Fallon at 4.9 stars from 1,468 reviews. Childs Tire, Autotech Auto Center, Ruder Automotive Services are the top three by rating among businesses with a real review history behind them. We rank on the ratings themselves and nobody can pay to appear there.

How much do mechanics charge per hour in O'Fallon?

Independent shops in Missouri usually bill $85 to $125 an hour for labor. The national range is $95 to $140. Dealers charge more. Most quotes are the book time for the job times that rate, plus parts, so ask the shop how many hours it is billing you for.

Does Missouri require a car inspection?

Cars more than 10 model years old or with 150,000 miles or more need a safety inspection every two years, with even model years tested in even years and odd in odd years. Cars registered in St. Louis City, St. Louis County, St. Charles County and Jefferson County also need an emissions test on the same schedule. A 2026 bill to end safety inspections in 2027 did not become law.

How do I know a shop in O'Fallon is trustworthy?

Look at the review count as well as the stars, because five stars from four people tells you very little. None of the 10 listings in O'Fallon has been claimed yet, so call to confirm hours and what the shop works on. Get the quote in writing before any work starts.

How does winter in O'Fallon affect my car?

O'Fallon gets about 105 nights a year at or below freezing and 14 inches of snow. Cold exposes a weak battery, and salted roads rust brake lines and exhaust parts. Test the battery in the fall and rinse the underbody in winter.

Can I get a pre-purchase inspection in O'Fallon?

Yes. PPI Auto, our sister company, inspects used cars in O'Fallon for $225 on most cars, pickups and SUVs. The inspector comes to the car, runs a 122 point check and sends the report the same day. Call 951-267-8500 to book.

Mechanics in Nearby Cities

No luck in O'Fallon? A mobile mechanic from the next town over will often make the trip. See all 174 cities in Missouri.

St Peters, MO8 mechanics · 6 miTop rated: Cintech Automotive Repair 5.0★Wentzville, MO3 mechanics · 9 miTop rated: The Garage 4.9★Auto repair in St Charles, MOSt Charles, MO11 mechanics · 10 miTop rated: Lt. Dan's Paintless Dent Repair 5.0★Auto repair in Chesterfield, MOChesterfield, MO2 mechanics · 12 miTop rated: Screens Onsite, LLC. 4.8★Maryland Heights, MO4 mechanics · 14 miTop rated: Bill's Truck Repair & Body Shop 4.7★Ellisville, MO7 mechanics · 16 miTop rated: Economy Car Care Center 4.9★Bridgeton, MO5 mechanics · 16 miTop rated: Big G Auto Service 4.7★Ballwin, MO2 mechanics · 16 miTop rated: Elco Chevrolet Service & Parts Center 4.7★

What Car Repairs Cost in O'Fallon, MO

Typical independent shop prices at Missouri labor rates, parts and labor, for a midsize car. Each guide shows the price for your vehicle and what to ask before you pay. See all 91 repair cost guides.

Shock absorber replacement cost $185 to $600Brake shoe replacement cost $170 to $420Fuel filter replacement cost $50 to $195Window regulator replacement cost $175 to $605Clutch master cylinder replacement cost $145 to $530Serpentine belt replacement cost $70 to $240
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