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Certified Experts. Quality Repairs. No Guesswork.

Automotive Services in The Williamston Area

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Auto Repair in Williamston, MI

Welcome to
Key Diesel and Auto Service!

Car problems? Let us take the wheel. As Williamston's trusted auto repair experts, we bring over 20 years of hands-on experience and hold both GM Master and ASE certifications. Family-owned and committed to honesty and efficiency, we proudly operate as a certified NAPA AutoCare Center, offering top-quality NAPA parts and Nokian tires. From walk-in oil changes to warranty-backed repairs, our team is here to keep you moving.

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NAPA Auto Care Gold Certified | Key Diesel and Auto Service
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Why Choose Us?

For more than 20 years, our family-run shop has built lasting relationships through dependable service and expert care. From quick maintenance to complex repairs, our ASE-certified team delivers excellence every time.

Managing a fleet? We handle that, too.

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Family Owned Business

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Accepts Most Extended Warranties

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Over 20 Years of Experience

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Walk-in Oil Changes

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ASE & GM Master Certified

36 Months 36,000 Nationwide Warranty NAPA Auto Care | Key Diesel and Auto Service

36 Months / 36K Miles Warranty

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Financing Options Available

NAPA 6 Months | Key Diesel and Auto Service

Some of
Our Services

From routine maintenance to major repairs, our team brings top-level expertise to every job. Need professional fleet service? We’re ready to support your business.

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Client Testimonials

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We Service
Most Makes and Models

Domestic - European - Import - Exotic - Other

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Wi-Fi Available

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Financing Available

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Waiting Room

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After Hours Drop-Off

Are You Ready to Schedule Your Service?

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