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Best Of · MD

The 4 Best Car Washes in Frederick, MD

The highest-rated car wash in Frederick, MD is Sam’s Car Wash at 4.7★ across 247 Google reviews, followed by Fusion Carwash (4.4★) and Rosemont Car Wash (4.3★). Rankings cover Frederick, MD car washes with at least 30 Google reviews.

Part of the Washington-Arlington-Alexandria, DC-VA-MD-WV car wash market.

Data updated · May 20, 2026

Sam’s Car Wash leads Frederick, MD on customer rating with a clear margin. 30-review minimum applied to filter small-sample noise. Sam’s Car Wash's 4.7★/247-review combination is the clear standout. The full Frederick market analysis at the bottom of the page shows where each ranked operator sits in the broader 15-location landscape.

  1. 🥇1

    Sam’s Car Wash

    4960 Westview Dr, Frederick, MD 21703

    4.7
    247 reviews
    Express Tunnel Chain · Sam’s Car Wash $81K AGI ZIP
  2. 🥈2

    Fusion Carwash

    5371 Spectrum Dr, Frederick, MD 21703

    4.4
    385 reviews
    Full Service Chain · Fusion Carwash $81K AGI ZIP
  3. 🥉3

    Rosemont Car Wash

    1814 Rosemont Ave, Frederick, MD 21702

    4.3
    280 reviews
    Full Service $84K AGI ZIP
  4. 4

    Frederick Shell Carwash

    1275 W Patrick St, Frederick, MD 21702

    4.3
    222 reviews
    Express Tunnel Chain · Frederick Shell Carwash $84K AGI ZIP
Frequently Asked Questions

About Frederick, MD

What is the best-rated car wash in Frederick, MD?

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Sam’s Car Wash is the highest-rated car wash in Frederick, MD at 4.7★ across 247 Google reviews. The location is at 4960 Westview Dr, Frederick, MD 21703.

What are the top 4 car washes in Frederick, MD?

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Ranked by Google review rating (filtering to locations with at least 30 reviews): 1. Sam’s Car Wash (4.7★, 247 reviews); 2. Fusion Carwash (4.4★, 385 reviews); 3. Rosemont Car Wash (4.3★, 280 reviews); 4. Frederick Shell Carwash (4.3★, 222 reviews).

How is the "best" car wash determined in this list?

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WashIndex ranks Frederick, MD car washes by their Google review rating, restricted to locations with at least 30 customer reviews so that small-sample outliers don't surface. Where ratings tie, the location with more reviews wins. The pool is restricted to the LLM-classified car-wash formats that actually wash vehicles on site — Express Tunnel, Full Service, In-Bay Automatic, Self-Serve Bay and Hand Wash — so that detailing/tint shops, car dealerships and gas stations with attached washes don't crowd out the actual car-wash operators.

About this ranking

Ranking restricts to LLM-classified car wash formats with at least 30 Google reviews. Sam’s Car Wash's 0.40-star lead over the rest of the top 4 is large enough that small rating movements won't change the #1 position. Ties broken by review count.

Sam’s Car Wash's lead at the top is durable, but the rest of the market matters too. The full Frederick, MD market analysis covers operator concentration, format mix, and per-aspect customer reads. Full Frederick, MD analysis › · Methodology ›

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