Part of Baltimore Car Wash Market
City Analysis · MD

Stevensville, MD Car Wash Market Analysis

Part of the Baltimore-Columbia-Towson, MD MSA.

A detailed read of the Stevensville car wash market built from 345 Google reviews across 5 locations. Covers format mix, operator dominance, geographic distribution, income demographics, and customer-experience signals at the metro, county, and ZIP level.

21666In-Bay Automatic (3)Express Tunnel (1)Detail Shop (1)

5 car wash locations in Stevensville, MD · dots colored by format · sized by review volume

Locations
5
Chains
2
+ 2 independents
Reviews
0K
Avg Rating
4.48
Damage Rate
0.00%
Median AGI/return
$124K
location-weighted
Executive Read

Stevensville, MD hosts 5 car wash locations identified by the WashIndex format classifier within the broader Baltimore trade area. Operating-quality signals are derived from 345 Google reviews, with 144 reviews processed through structured LLM extraction across 55 dimensions. The weighted-average rating across all locations is 4.48★, with a reviewer-reported damage rate of 0.00% and a membership-cancellation friction rate of n/a of mem-discussing reviews.

Concentration in this city: 2 of 5 locations (40.0%) operate as independents or single-location operators; the top 10 chains together control 3 locations (60.0%). The largest single operator by location count is Friendly's Kent Island with 2sites in Stevensville.

Across all 5 locations, the dominant concept is Detail Shop (1 sites), with secondary presence from Express Tunnel (1), Full Service (0), and Self-Serve Bay (0).

01 Format Mix

What kinds of car washes does Stevensville have?

The Stevensville MSA contains a wide mix of car wash formats — from express tunnels and full-service operations to detail shops and self-serve bays. The bar chart below shows how many locations of each format have been formally classified by our LLM-based format classifier (which reads each operator's own website to determine the format), with the avg Google rating per format displayed alongside the count.

In-Bay Automatic3 (60.0%) · 4.30★Express Tunnel1 (20.0%) · 4.10★Detail Shop1 (20.0%) · 5.00★
Format Locations % of MSA Reviews Avg Rating Damage Rate Cancel Friction
In-Bay Automatic 3 60.0% 202 4.30 0.00%
Express Tunnel 1 20.0% 43 4.10 0.00%
Detail Shop 1 20.0% 100 5.00 0.00%
02 Income & Demographics

Where the customers (and the spend) are.

Each ZIP in the Stevensville MSA has been joined to IRS Statistics-of-Income data (tax year 2022, mean Adjusted Gross Income per return as the income proxy) and to the per-location Google rating dataset. The scatter below plots every car wash with at least 10 reviews against its ZIP-level income, with each dot colored by format and sized by review volume.

Across 5 qualifying locations the simple Pearson correlation between ZIP income and Google rating is 0.00 — effectively zero. Higher-income ZIPs in the MSA do not produce systematically better-rated car washes. Operating-quality signals are dominated by per-operator execution, not by neighborhood income. The mean-of-scatter location sits at $124K AGI/return and 4.16★.

3.0★3.5★4.0★4.5★5.0★$20K$50K$80K$110K$140K$170K$200KMean AGI per Tax Return (ZIP)Google RatingFriendly's Kent Island — Stevensville (21666): 4.6★, 143 reviews, $124K AGI per return, In-Bay AutomaticBay Automotive Detailing — Stevensville (21666): 5.0★, 100 reviews, $124K AGI per return, Detail ShopSpeedy Fast Car Wash — Stevensville (21666): 4.1★, 43 reviews, $124K AGI per return, Express TunnelFriendly's Touchless Carwash — Stevensville (21666): 3.8★, 32 reviews, $124K AGI per return, In-Bay Automaticbp — Stevensville (21666): 3.3★, 27 reviews, $124K AGI per return, In-Bay Automatic
In-Bay Automatic Express Tunnel Detail Shop

Car wash count and quality by income tier

Grouping ZIPs by income tier shows how location count and average rating shift across the income distribution. The blue bars are location count per tier; the orange tick marks show the average Google rating across all car wash locations in that tier (scaled against the same y-axis).

54310Under $50K0 locs · 0.00★$50K – $75K0 locs · 0.00★$75K – $100K0 locs · 0.00★$100K – $150K5 locs · 4.48★$150K+0 locs · 0.00★
Income tier (mean AGI/return) ZIPs Locations Reviews Avg Rating Top Format
Under $50K 0 0 0 0.00
$50K – $75K 0 0 0 0.00
$75K – $100K 0 0 0 0.00
$100K – $150K 1 5 345 4.48 In-Bay Automatic (3)
$150K+ 0 0 0 0.00

The highest-income tier ($150K+) contains 0 car washes across 0 ZIPs, with a weighted-average rating of 0.00★ — compared to 0 locations across 0 ZIPs averaging 0.00★ in the lowest-income tier (Under $50K). The middle-income tiers ($75K–$150K) tend to host the densest concentrations of express tunnels — the format that monetizes most effectively at suburban price points.

03 Dominant Chains

Who operates the most Stevensville car washes?

The Stevensville MSA hosts 2 different chains alongside 2 independent operators (single-location or unaffiliated sites). The table below ranks the top 25 chains by location count in the MSA, with each chain's per-MSA Google rating, reviewer-reported damage rate, and membership cancellation friction rate.

The top 2 chains together control 3 of 5 locations (60.0%) — meaning 40.0% of the MSA's car wash supply remains in the hands of smaller chains and independent operators. That fragmentation level is typical of large US metros and creates meaningful consolidation runway for active acquirers.

# Chain Locations Reviews Avg Rating Damage Cancel Upsell
1 Friendly's Kent Island 2 175 4.45
2 bp 1 27 3.30
05 Customer Experience Signals

What customers love and complain about, MSA-wide.

Aspect scores aggregate the per-review LLM extractions for 144 reviews across all 5 MSA locations. Each score is computed as (positive − negative) / (positive + negative + mixed) for that aspect, ranging from −1 (universally negative) to +1 (universally positive). Numbers above zero mean customers say more positive than negative things; below zero means the reverse.

Reading these together gives a quick read on where the metro's car wash industry stands operationally: which aspects of the experience are reliable strengths and which ones generate the most friction.

Staff +0.88
Per-Wash Price +0.79
Wash Quality +0.75
Facility Cleanliness +0.25
Wait Time -0.50
Equipment Working -1.00
06 All Locations

All 5 Stevensville car wash sites.

The complete inventory of car wash locations in the Stevensville MSA, ranked by review volume. Each row shows the operator name, address, format classification (where determined), chain affiliation (when part of a multi-location operator), Google rating, total review count, county, and the IRS mean-AGI-per-return for the ZIP it sits in. Locations with fewer than 10 reviews on Google appear without a rating column populated.

We're showing the top 10 by review volume; the full set of 5 locations is available in the underlying dataset for users requesting a custom market study.

Location City Format Chain Rating Reviews ZIP AGI
Friendly's Kent Island
1383 Main St
Stevensville, MD In-Bay Automatic Friendly's Kent Island 4.6 143 $124K
Bay Automotive Detailing
317 State St Suite 6
Stevensville, MD Detail Shop 5.0 100 $124K
Speedy Fast Car Wash
517 Main St
Stevensville, MD Express Tunnel 4.1 43 $124K
Friendly's Touchless Carwash
1383 Main St
Stevensville, MD In-Bay Automatic Friendly's Kent Island 3.8 32 $124K
bp
320 Romancoke Rd
Stevensville, MD In-Bay Automatic bp 3.3 27 $124K

About this analysis

Car wash inventory for Stevensville, MD is sourced from the WashIndex national car-wash place index, filtered to places whose Google-Maps-reported city matches Stevensville, and further restricted to places whose format the WashIndex LLM classifier identified as a car wash (excluding dealerships, gas stations, and other auto-related businesses that don't primarily operate a car wash). Inclusion in the parent Baltimore MSA dataset is established by point-in-polygon against the official US Census county boundaries (TIGER/Line, 2024).

Operating-quality signals are derived from 144 customer reviews processed through WashIndex's 55-field LLM extraction pipeline. Format classification comes from a separate per-location website-reading classifier. ZIP-level income data is from the IRS Statistics of Income (tax year 2022) — mean Adjusted Gross Income per tax return, which is directionally aligned with ACS median household income but available without authentication.

See our full methodology for the extraction pipeline, validation samples, and aggregation logic.

Drill into the data directly.

The free WashIndex platform shows every Stevensville car wash on an interactive map, with the same review-derived signals and demographic overlays that power this analysis. Filter by format, drive-time, or operator and compare any location head-to-head with its true competitive set.