WashIndex Membership Price Index

Car Wash Membership Prices Over Time

Historical car wash prices and pricing trends from 2015 to 2026: what US car washes charge for an unlimited monthly membership, tracked as the WashIndex Membership Price Index — a composition-robust, same-store index of advertised "wash club" prices, anchored to 2020 = 100.

As of June 2026, US car wash unlimited-membership list prices are up about 16% since 2020 and roughly 31% since 2015, according to the WashIndex Membership Price Index (2020 = 100). The express-tunnel cut is up about 23% since 2020, and the average advertised unlimited membership costs about $34 per month.

Last updated June 2026 · Source: WashIndex / Sparkle Technologies

  • 195 chains priced
  • 3,123 price points
  • 2015–2026, annual
  • 2020 = 100 base
All Formats · 2026
116.1 +16% since 2020

National unlimited-membership list prices across every wash format. Up +31% since 2015. Average advertised membership in 2026: $34.00/mo.

Express Tunnels Only · 2026
123.5 +23% since 2020

The express/conveyor-tunnel cut. Express memberships ran hotter than the all-format average — and were priced below 2020 levels during the late-2010s membership land-grab.

National index, 2015–2026

All formats Express tunnels
80 90 100 110 120 130 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 All formats — 2015: 88.3 All formats — 2016: 92.7 All formats — 2017: 92.8 All formats — 2018: 94.2 All formats — 2019: 96.1 All formats — 2020: 100 All formats — 2021: 101 All formats — 2022: 104.6 All formats — 2023: 106.8 All formats — 2024: 110.7 All formats — 2025: 108.4 All formats — 2026: 116.1 Express tunnels — 2015: 95.4 Express tunnels — 2016: 96.3 Express tunnels — 2017: 95.2 Express tunnels — 2018: 90 Express tunnels — 2019: 90.2 Express tunnels — 2020: 100 Express tunnels — 2021: 103.4 Express tunnels — 2022: 111.5 Express tunnels — 2023: 113.5 Express tunnels — 2024: 115.2 Express tunnels — 2025: 114.8 Express tunnels — 2026: 123.5

Index, 2020 = 100 (dashed line). Hover a point for its value.

Car wash pricing trends over time: executive summary

All formats. The national index sat at 88.3 in 2015, climbed into the 2020 base, and has risen steadily since to 116.1 in 2026 — +16% since 2020 and about +31% since 2015. The one interruption was a dip in 2025 (to 108.4) before a sharp step-up in 2026. In dollar terms the average advertised unlimited membership has hovered in the $28–$34/month range, ending at $34.00/mo.

Express tunnels only. The express cut tells a sharper story: +23% since 2020, reaching 123.5 in 2026. Express memberships were actually cheaper in index terms in 2017–2019 (90.0 in 2018) than at the 2020 base — operators spent the late 2010s buying members with low introductory unlimited plans, then raised prices steadily through the 2020s. This matches Mister Car Wash's SEC-disclosed revenue-per-member, which rose about +10% from 2021 to 2025 against the express index's +11% over the same window.

A note on what this is. The WMPI is a list-price index — the advertised membership price, not the realised revenue per member after promotions, free months, and tier mix. Read it as an upper bound on what members actually paid, and use the index (not the raw dollar averages) for the trend: the index is matched-model, so it isolates genuine price changes from the dataset simply gaining or losing chains over time.

By region, since 2020

Midwest
+29%
Northeast
+21%
South
+9%
West
-1%

Regional indices, 2020–2026

West Midwest South Northeast
80 90 100 110 120 130 140 2020 2021 2022 2023 2024 2025 2026 West — 2020: 100 West — 2021: 91.9 West — 2022: 96.6 West — 2023: 97 West — 2024: 99.4 West — 2025: 89.8 West — 2026: 99.3 Midwest — 2020: 100 Midwest — 2021: 107.7 Midwest — 2022: 109.8 Midwest — 2023: 115.4 Midwest — 2024: 118.1 Midwest — 2025: 120 Midwest — 2026: 128.6 South — 2020: 100 South — 2021: 102 South — 2022: 104.8 South — 2023: 105.6 South — 2024: 102.9 South — 2025: 106.7 South — 2026: 109 Northeast — 2020: 100 Northeast — 2021: 100.2 Northeast — 2022: 95.7 Northeast — 2023: 98.1 Northeast — 2024: 110.5 Northeast — 2025: 116.8 Northeast — 2026: 121.1

All-format index, 2020 = 100. Multi-region chains are attributed across the regions they actually operate in. Regional panels are thinner than the national one, so the breakout starts at 2020.

Index values, 2015–2026

Year All formats Express only Avg. membership
2026 116.1 123.5 $34.00
2025 108.4 114.8 $30.28
2024 110.7 115.2 $33.74
2023 106.8 113.5 $30.42
2022 104.6 111.5 $32.74
2021 101.0 103.4 $31.16
2020base 100.0 100.0 $30.47
2019 96.1 90.2 $33.72
2018 94.2 90.0 $27.54
2017 92.8 95.2 $27.88
2016 92.7 96.3 $28.27
2015 88.3 95.4 $27.73

Index: 2020 = 100. "n" is the location footprint represented that year (sum of priced chains' store counts), not a chain count. Average membership is a composition-sensitive dollar level, shown for scale — use the index for the trend.

Frequently Asked Questions

About the Car Wash Membership Price Index

Where can I find historical car wash prices over time?

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The WashIndex Membership Price Index publishes historical US car wash unlimited-membership prices from 2015 to 2026, as both an index (2020 = 100) and average dollar prices per month. It is the most complete public time series of car wash pricing trends, reconstructed from archived operator pricing pages across 195 chains and 3,123 price points.

How much have car wash membership prices increased?

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US car wash unlimited-membership list prices are up about 16% since 2020 and roughly 31% since 2015, according to the WashIndex Membership Price Index (2020 = 100). The express-tunnel cut rose faster, up about 23% since 2020. These are advertised list prices, an upper bound on what members actually pay after promotions.

What is the average price of a car wash unlimited membership?

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As of 2026, the average advertised unlimited monthly car wash membership is about $34.00 per month, ranging from roughly $24 for a base tier to about $43 for a premium tier, based on the WashIndex priced panel of 195 chains.

How fast have express tunnel car wash memberships risen in price?

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Express/conveyor-tunnel unlimited memberships are up about 23% since 2020 (index 123.5 in 2026, base 2020 = 100). They were priced below their 2020 level during 2017–2019, then climbed steadily through the 2020s as operators raised prices on members acquired with cheap introductory plans.

What is the WashIndex Membership Price Index (WMPI)?

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The WMPI is a back-cast price index of US car-wash unlimited-monthly-membership list prices from 2015 to 2026, anchored to 2020 = 100. It is built from 3,123 archived price points across 195 chains using a matched-model, chain-linked geometric construction that measures price change only across chains priced in both compared years, so it is robust to chains entering or leaving the dataset.

Which US region has the steepest car wash membership price increases?

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The Midwest has seen the steepest car wash membership inflation, up about 29% since 2020, followed by the Northeast (about 21%). The South rose moderately (about 9%) and the West was essentially flat.

Is the index based on list prices or what members actually pay?

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The WMPI tracks advertised list prices, not realised revenue per member after promotions, free months, and tier mix. It is validated against ground truth: Mister Car Wash's SEC-disclosed revenue per member rose about 10% from 2021 to 2025, against the WMPI express cut's roughly 11% over the same window — a close match. Treat the index as an upper bound on realised price growth.

The full methodology

How the index is built — the matched-model, chain-linked construction, time-varying location weighting, post-stratification, winsorisation, the four partial-capture guards, the regional and express cuts, and the validation against Mister Car Wash's SEC-disclosed revenue per member.

Read the full research report