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    Garmon's Diesel Performance

    4.2 (5 reviews)

    Services - Garmon's Diesel Performance

    Auto diagnosis or inspection

    Auto maintenance

    Auto repairs

    3 More Services

    Auto transmission repair

    Routine automotive maintenance

    Transmission leak inspection

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    Alpha Auto Repair & Tire

    Alpha Auto Repair & Tire

    (8 reviews)

    Beware of Misleading Diagnosis - Get a Second Opinion!…read more We recently took our 2019 Lincoln Nautilus to Alpha Automotive in Locust Grove due to sluggish performance and visible exhaust emissions. After a quick inspection, we were informed the vehicle needed a brand-new engine--a repair quoted between $9,000-$10,000. The staff insisted this was the only option, and they removed the engine cover during the process. Thankfully, we sought a second opinion from a trusted mechanic and took the car to Legacy in McDonough, where we were told an engine replacement was completely unnecessary. The issue turned out to be a known and documented problem with that engine model (supported by a Ford service bulletin), not a catastrophic failure. Legacy handled the fix properly, professionally, and at a fraction of the quoted cost. When we contacted Alpha Automotive about the removed engine cover, they did apologize--but that didn't change the fact that we were nearly misled into an expensive, unnecessary repair. Our recommendation: Always get a second opinion, especially when faced with high-cost diagnostics. This experience raises concerns about transparency and trustworthiness. Consumers deserve honesty, not what appears to be pressure tactics or oversight.

    I went in there for a slow leak on one of my tires…read more They found a nail in 2 tires. They fixed them both for me and I was out the door. Everyone was really friendly and energetic and made me feel like I have been going here for years. Prices are affordable and just watching how they interacted with other customer, they didn't try to upsell anything and wasn't pushy when a service was turned down. I will be going back again in the future if I need help with a tire.

    Garmon's Diesel Performance - autorepair - Updated May 2026

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