Hillside Auto Repair

Hillside Auto Repair Loved by O'Fallon since 1985! 🚗 Hillside Auto Repair: The Professionals You Can Trust for expert service and honest advice.

All backed by a nationwide 3 yr/36k mile warranty. Your family deserves the best - we deliver!

Your luxury car is not trying to drain your bank account with service reminders. It is trying to save you from a repair ...
06/17/2026

Your luxury car is not trying to drain your bank account with service reminders. It is trying to save you from a repair bill that could buy a used Honda. 🚗💨

Audi, BMW, Mercedes, Range Rover, and Land Rover vehicles are packed with technology that demands specific maintenance. Variable valve timing. Direct injection. Turbochargers spinning at 100,000 RPM. Active suspensions that read the road. Dual-clutch transmissions that shift faster than you can blink. Each system requires precise fluids and service intervals. Ignore the warnings and you risk catastrophic failure.

We explain the real reasons behind those service alerts and how Hillside Auto Repair in O'Fallon, MO keeps your investment protected using dealer-level tools, factory fluids, and a 3-year/36,000-mile warranty on our work.

Your dashboard is trying to help you. Are you listening?

Click the link to read our full blog! 👇
https://hillsideautomotiverepair.com/blog/why-does-my-luxury-car-have-so-many-scheduled-services

Have you checked your luxury vehicle's service schedule lately?

Toyota: “I need five quarts of basic oil and a spin on filter. Done in 20 minutes.”Mercedes: “I need nine quarts of unic...
06/16/2026

Toyota: “I need five quarts of basic oil and a spin on filter. Done in 20 minutes.”
Mercedes: “I need nine quarts of unicorn tear spec 229.5, a computer reset, no dipstick, 13 underbody bolts, and a technician with a factory scan tool. Also my filter housing might crack just for fun.”

And then drivers ask us why the price is different. 🤦‍♂️

We broke down every single dollar on the blog. Same oil? Not a chance. Same filter? Absolutely not. Same shop? Please don’t take your Mercedes to a quick l**e in O’Fallon unless you enjoy dash lights and regret.

Click the link to read the full story from Hillside Auto Repair. And yes, we offer that 3 year/36,000 mile warranty on everything we do. Even the “expensive” oil changes.

Tap the link in bio to learn why your Mercedes costs more to love: https://hillsideautomotiverepair.com/blog/why-is-my-mercedes-oil-change-when-my-toyota-is

Stop playing "will it freeze or will it roast" at every red light in O’Fallon. 🚦🥵Your AC works great at 70 mph on the hi...
06/15/2026

Stop playing "will it freeze or will it roast" at every red light in O’Fallon. 🚦🥵

Your AC works great at 70 mph on the highway but turns into a hair dryer the second you hit traffic near Mid Rivers Mall? That’s not bad luck. That’s a broken cooling fan relay or a weak fan motor. At idle, no fan equals no cold air. Period.

We wrote the ultimate guide to this #1 St. Louis summer complaint. Click the link to read why this happens, how we diagnose it with dealer grade tools, and why our 3 year/36,000 mile warranty means you never sweat this repair again:

https://hillsideautomotiverepair.com/blog/why-is-my-ac-blowing-warm-air-when-idling-in-traffic-but-cold-on-the-highway-

What’s your worst “no AC in traffic” memory? Tell us in the comments!

Summer in O’Fallon is officially here, which means your car’s AC is about to work harder than a one legged man in a butt...
06/09/2026

Summer in O’Fallon is officially here, which means your car’s AC is about to work harder than a one legged man in a butt kicking contest. 🥵

Before you grab that cheap DIY recharge can from the auto parts store, ask yourself one question: do you feel lucky?

Because that little can might give you cold air for a week, but it won’t fix the leak, it won’t measure the oil, and it definitely won't stop your compressor from grenading itself.

We wrote the full truth about what an AC recharge actually involves, why venting refrigerant is illegal, and how a $$$ pro service beats a $$$$$ compressor replacement every single time.

Click the link to read our latest blog post and learn why cheap usually costs more in the end. 👇
https://hillsideautomotiverepair.com/blog/what-s-actually-involved-in-an--ac-recharge---why-can-t-i-just-use-a-diy-can-

You asked us to check the brakes. We found the death wobble instead. 😬 Sorry, not sorry. We'd rather be the bearer of ba...
06/08/2026

You asked us to check the brakes. We found the death wobble instead. 😬

Sorry, not sorry. We'd rather be the bearer of bad news than the reason you're hitchhiking home on Highway K.

Read our latest blog to find out why we always "find something else wrong" and how Hillside Auto Repair keeps you safe (with a 3 year/36k warranty to back it up).

Click the link to read more. 👇
https://hillsideautomotiverepair.com/blog/why-do-you-always-find-something-else-wrong--can-t-you-just-fix-what-i-asked-for-and-leave-it-alone-

Hillside Auto Repair customers: we’re asking you to please advocate for us.The automotive industry is at a critical mome...
06/02/2026

Hillside Auto Repair customers: we’re asking you to please advocate for us.

The automotive industry is at a critical moment.

Next week, Congress will move forward on the REPAIR Act, legislation that directly impacts your freedom to choose where you get your car fixed, the future of independent repair shops like ours, and how vehicle diagnostics and serviceability work for years to come.

If you support the Right to Repair, now is the time to make your voice heard. The good news? It takes less than 30 seconds.

Simply:
• Visit https://www.repairact.com/
• Click “Advocate Now”
• Enter your information
• A pre‑populated message will be automatically sent to your local legislators

The process is incredibly simple, but the impact could be huge for our industry and for keeping Hillside Auto Repair able to serve you fairly.

Please take a few moments to support the future of automotive repair, then share this with others who drive.



LEARN MORE:
https://youtu.be/Df4JGM-bk1s?si=vewZUsBBgFYiZYg5

Ladies of O’Fallon, have you ever left a repair shop feeling like your wallet just went through a breakup? 💔 Some shops ...
06/02/2026

Ladies of O’Fallon, have you ever left a repair shop feeling like your wallet just went through a breakup? 💔
Some shops do take advantage. We said it.

But we also wrote the ultimate guide to protecting yourself, from digital inspections to our Women’s Automotive Empowerment Course led by our own NaTasha.

Nikki, our dealership trained service advisor, will never call you “baby” or pink tax you (You know upcharge cause you are a female, EWW).

Click the link below to read our blog about this, because your car deserves a pro, not a predator. And we are the Professionals You Can Trust. 🔧🚗
👉 https://hillsideautomotiverepair.com/blog/do-shops-take-advantage-of-me-because-i-m-a-woman

Have you ever felt talked down to at a shop? What’s one question you wish you had asked? Comment below. NaTasha reads the comments and will answer your automotive questions!

Your check engine light is on. AutoZone just handed you a free code that says "misfire." So naturally, you are ready to ...
06/01/2026

Your check engine light is on. AutoZone just handed you a free code that says "misfire." So naturally, you are ready to throw a set of spark plugs at it and call it a day. What could go wrong? Besides everything.

That free code is like a weather forecast saying "it might rain." It doesn't tell you if you need an umbrella, a boat, or an ark. We wrote an entire blog post explaining why we charge a diagnostic fee even when the parts store works for free. We talk about our $5000 scan tools, the technician who knows your engine's secrets, and why guessing with your wallet is a dangerous game.

If you live in O’Fallon, Missouri and you want the problem fixed right the first time (backed by our 36,000 mile warranty), click the link. Read the truth. Then come see us at Hillside Auto Repair. You have free will-choose professionals please!

Click the link👉 https://hillsideautomotiverepair.com/blog/why-do-you-charge-a-diagnostic-fee-just-to-look-at-my-car-the-code-was-free-at-autozone-what-am-i-paying-for

Your brakes just failed. Again. And that mobile mechanic you paid in cash? He has pulled a vanishing act faster than you...
05/27/2026

Your brakes just failed. Again. And that mobile mechanic you paid in cash? He has pulled a vanishing act faster than your kids disappear when chores are mentioned. 🪄💨

Before you invite a stranger with a socket set to destroy your driveway and your transmission, read our new blog. We cover everything from oil-stained concrete to bolts that were never tightened. Spoiler alert: your family deserves better than a guess from a guy working out of a beat up van.

Click the link for the full story. Then bring your car to people who actually have a building. And a warranty. And a conscience.

👉 https://hillsideautomotiverepair.com/blog/the-hidden-dangers-of-using-a-mobile-mechanic

Your driveway is for basketball, not brake jobs. Trust the pros with the lift. Trust Hillside Auto Repair.

What is the worst repair horror story you have ever heard from a mobile mechanic? Drop it in the comments. 👇

Address

400 Church Street
O'Fallon, MO
63366

Opening Hours

Monday 8am - 1pm
2pm - 5pm
Tuesday 8am - 1pm
2pm - 5pm
Wednesday 8am - 1pm
2pm - 5pm
Thursday 8am - 1pm
2pm - 5pm
Friday 8am - 1pm
2pm - 5pm

Telephone

+16362401050

Website

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