Parking garage with a white SUV on the right and a large wall logo in the background. | G3 Transmission and Auto
Car repair shop interior with a white SUV on the right and tools and equipment across the garage. | G3 Transmission and Auto

Auto repair in Smithville, MO

All In On Better Auto Repair. All In On Doing It Right.

At G3 Transmission and Auto, we believe quality auto repair starts with getting the diagnosis right. As a family-owned, locally operated shop, we combine specialized transmission expertise with the full range of automotive services your vehicle needs to stay dependable for years to come. From routine maintenance to complex diagnostics and major repairs, our team takes the time to understand the problem, explain what we find, and recommend the right solution. We don't believe in guessing, unnecessary repairs, or treating customers like another repair order.

Whether you're dealing with a transmission problem or simply need a trusted shop for your everyday automotive needs, you can expect professional service, clear communication, and workmanship we stand behind. We're here to build relationships that last well beyond your next repair.

We’re proud to support the families, businesses, veterans, first responders, and neighbors who make our community home.

ATRA logo in yellow and black with text “Automatic Transmission Rebuilders Association” | G3 Transmission and Auto
BBB Accredited Business logo with blue and white design and torch icon | G3 Transmission and Auto
White SUV on a lift in an auto repair shop with several vehicles parked below | G3 Transmission and Auto
Two metal mechanical clutch assemblies on a workbench, shown in grayscale. | G3 Transmission and Auto
Damaged metal transmission housing with a torn outer casing and exposed internal parts on a workshop floor | G3 Transmission and Auto

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Trusted by the People We Serve

Good Work Builds Trust. Great Service Keeps People Coming Back.

Quality Over Easy
Shortcuts

Taking the time to diagnose problems properly and deliver quality repairs - from routine maintenance to complex transmission work.

1

Clear Answers Without
The Guesswork.

We explain what we find, why it matters, and what your options are without unnecessary pressure or
confusing jargon.

2

Specialized Expertise.
Full-Service Care.

Our transmission expertise is at the heart of what we do but it’s backed by knowledge and experience to handle a vehicle from bumper to bumper.

3

A Shop Built On
Relationships

We're family-owned, locally operated, and committed to treating every customer like a person - not a repair order.

4

Make your repairs more manageable with our flexible financing options through Affirm and Sunbit.

Affirm logo in black lowercase text with a blue curved arc above the letters | G3 Transmission and Auto
Sunbit logo with blue text and orange sunburst icon | G3 Transmission and Auto

Specialized knowledge for one of your vehicle's most complex systems

Transmission Problems? We’ve Got You.

From complex diagnostics to in-house rebuilding and installation, our transmission specialists know what it takes to get your vehicle shifting right. And with full-service repair capabilities, we're here for everything else your vehicle needs, too.

Whatever brings your vehicle through our doors, you can expect professional workmanship, straightforward recommendations, and communication throughout the process. We're here to help keep your vehicle reliable for the long haul.

White pickup truck lifted on a garage lift, viewed from the rear-left underside. | G3 Transmission and Auto

from routine maintenance to complex automotive problems

Specialized Transmission Work And Complete Automotive Care.

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Not sure which category fits? Call us at (816) 866-0912 or Book Online - we'll take care of it.

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Your Vehicle. Our Expertise.

Professional Care Across The Vehicles You Drive Every Day.

American brands

European brands

import brands

other brands

Gray pickup truck on a white background, angled front view | G3 Transmission and Auto
Three Jeep SUVs in gray, silver, and white, arranged side by side on a white background. | G3 Transmission and Auto

General Auto Repair

3 Years / 36,000 Miles


Drive with confidence knowing your general automotive repairs are backed by 3 years or 36,000 miles of warranty coverage.

G3 Rebuilt & Installed Transmission

3 Years / 100,000 Miles


Our in-house rebuilt and installed transmissions come with 3 years or 100,000 miles of warranty coverage for added peace of mind.

Carry-Out Transmissions

1 Year / 12,000 Miles


Carry-out transmissions are backed by 1 year or 12,000 miles of warranty coverage, helping protect your investment after your purchase.