TL;DR: Car washes are one of the cleanest ETA targets in the lower middle market. Fragmented ownership, recurring membership revenue, and accessible SBA financing make them worth a serious look. But membership churn and location quality can break a deal that looks good on paper.
Why operators are targeting car washes
According to WashIndex, the United States has roughly 80,000 physical car wash locations. About 88% are owned by independent operators. That is an acquisition market. No dominant consolidator has locked it up. Most sellers are retiring owners who built one site over twenty years and have no succession plan.
The industry generated $20.3 billion in U.S. revenue in 2025, growing at a compound rate near 5.6% over the prior five years. The growth driver is the express tunnel format and the subscription model it brought with it. An unlimited wash membership averages $34 per month today, up 16% since 2020. That recurring charge transforms a weather-dependent service into predictable monthly revenue.
Leonard Green and Partners took Mister Car Wash private in February 2026 at a $3.1 billion total enterprise value. That is not a signal to avoid the sector. It is a signal that institutional buyers see clear exits for operators who build and prove two or three sites.
Which format to target
Four formats define the market: self-serve bays, in-bay automatics, full-service washes, and express tunnels. For ETA buyers, the express tunnel is the primary acquisition target.
Express tunnels move cars fast, run on minimal labor, and generate membership revenue at scale. A stabilized single-bay tunnel with 3,000 active members billing at $28 per month generates over $1 million in annualized membership revenue before retail add-ons. The operational model is simple enough for a first-time operator to manage once systems are in place.
Self-serve and in-bay automatic washes are simpler to operate but carry lower upside. They do not support meaningful membership economics. They work as a first acquisition for operators with limited capital, but the ceiling is low.
Full-service washes are labor-intensive. Margins are lower. Buyer pools are thinner. Avoid these unless you have direct car wash operating experience.
What you will pay
Car wash valuations depend on format and scale. According to Auxo Capital Advisors, planning ranges for 2026 run as follows:
- Single-site, owner-operated: 3.0x to 5.0x SDE
- Express exterior washes: 5.0x to 8.0x EBITDA
- Established multi-site operators: 6.0x to 9.0x EBITDA
- Premium multi-location platforms: 7.0x to 10.0x EBITDA
Small, owner-operated washes use seller's discretionary earnings as the base because owner compensation is embedded in the business. Express tunnels use EBITDA. The distinction matters when you are structuring a letter of intent. A seller quoting a 4x multiple on "earnings" without defining the earnings base is giving you nothing. SDE and EBITDA are not interchangeable, and conflating them is how buyers overpay.
The multiple moves based on membership quality, site traffic, lease control, and equipment condition. A wash with 4,000 stable members, low churn, and a long lease commands the top of the range. A wash with 1,200 promotional members, high cancellation rates, and aging tunnel equipment sits at the bottom.
SBA financing: how it works here
SBA 7(a) loans fund the majority of independent car wash acquisitions. The program covers up to $5 million, requires around 10% equity injection, and prices at a variable rate tied to prime. According to WashIndex lending data, roughly 380 SBA-backed car wash loans are approved each year, at a median of $774,800. The modern-era charge-off rate is 4.4%, down from 13.7% before 2010. Lenders understand this asset class. It is not a hard sell.
SBA 504 loans cover real estate and major equipment at longer fixed-rate terms but require 15 to 20% down due to the special-purpose nature of car wash collateral. Most acquisition buyers use 7(a) for speed and flexibility, then explore refinancing into 504 later if they own the underlying real estate.
For a deeper breakdown of how SBA financing structures work in ETA deals, see this guide to SBA loans for search fund operators.
Lenders want a debt-service coverage ratio of at least 1.15x under 7(a) guidelines. Most preferred lenders want 1.25x. They compute DSCR on maintenance-adjusted EBITDA, not the seller's claimed number. Claimed EBITDA runs 15 to 30% above the sustainable figure at many sites because sellers defer equipment maintenance and exclude normalizing adjustments. A quality of earnings report is not optional in this sector.
The four things that actually determine performance
Membership churn. Rinsed's Q1 2026 industry data across more than 3,000 operating locations shows monthly churn at 7.3%. Voluntary cancellations account for 4.5%; involuntary credit card declines account for 2.8%. Request twelve months of point-of-sale membership acquisition and cancellation history. A wash with a promo-pumped member count that is losing 10% of its base monthly is not the business the income statement describes.
MRR per bay. Divide trailing three-month automated billing revenue by the number of conveyor tunnel bays at the site. Below $25,000 per bay per month, debt coverage is thin at standard SBA terms. Above $45,000, you are looking at institutional-quality cash flow with DSCR headroom above 1.55x. This single metric predicts underwriting outcomes better than the headline revenue number.
Location. Traffic count, ingress and egress, stacking capacity, and competitive saturation in the trade area matter more than the income statement in most car wash deals. A good location in an undersupplied market recovers from a bad operator. A bad location in an oversaturated market does not recover from anything. Ask about the number of tunnels per 10,000 households in the trade area, and pull the development pipeline before you sign a letter of intent.
Lease terms. Short lease tails, ambiguous change-of-control provisions, and above-market rent are deal killers. If the landlord can terminate the lease on a sale, you are buying a site right, not a business. Owned real estate solves this cleanly. At minimum, you need a 15-year remaining term with renewal options and an explicit right of assignment to a buyer.
What to walk away from
Some situations are not negotiating points. They are structural disqualifiers:
- A membership base built on promotional pricing with no stabilized cohort data showing what retention looks like after the promo period
- Equipment deferred maintenance the seller will not credit at closing
- A lease with fewer than 10 years remaining and no renewal options
- A market at 1.5 or more tunnels per 10,000 households with new permits in the pipeline
- Seller-claimed EBITDA with no quality of earnings support
An operator who takes one of these situations on without adequate capital buffer will spend two years working a broken deal instead of building a business.
Who this works for
Car wash acquisitions fit a specific operator profile. The right buyer has capital for the equity injection on a $3 million to $6 million site, can absorb the management complexity of an express tunnel during the membership ramp period, and is buying into a market with room for a second location within three years. The thesis is two or three sites with proven membership economics, then a sale to a regional platform or private equity aggregator at an institutional multiple.
If you want a simpler first acquisition with lower capital requirements, a self-serve or in-bay automatic works. The growth ceiling is lower, and so is the execution risk.
If you have no experience operating a service business, start with a franchise. Tommy's Express is the most SBA-financed car wash franchise in the country, with 58 approved loans totaling $156 million at a median of $2.1 million per location. A franchise provides operating systems and a brand that SBA lenders know how to underwrite. Independent acquisitions require more discipline and more operator knowledge to close cleanly.
The exit paths in this sector are visible. Institutional capital is actively buying proven multi-site operators. The financing infrastructure is established. The deals that work are the ones where the operator did the real work before signing the LOI.
Frequently Asked Questions
What valuation multiple should I expect when buying a car wash?
Valuation depends on format and size. Single-site owner-operated washes typically trade at 3.0x to 5.0x SDE. Express exterior businesses usually trade at 5.0x to 8.0x EBITDA. Multi-site operators with strong membership economics command 6.0x to 9.0x EBITDA or higher, depending on membership quality, site control, and equipment condition.
Can I use SBA financing to buy a car wash?
Yes. SBA 7(a) loans fund up to $5 million for car wash acquisitions with around 10% equity down. Roughly 380 SBA-backed car wash loans are approved each year at a median of $774,800. The modern-era charge-off rate is 4.4%, which makes car washes a financeable asset class with a track record lenders understand. Most preferred lenders want a debt-service coverage ratio of at least 1.25x on maintenance-adjusted EBITDA.
What is the most important metric for underwriting an express car wash?
Monthly recurring revenue per conveyor bay is the most predictive metric. Below $25,000 per bay per month, debt coverage is thin at standard SBA loan terms. Above $45,000, the site generates institutional-quality cash flow with strong coverage ratios. Request twelve months of point-of-sale membership data, not just a static member count, to separate real retention from promotional ramp.
What kills most car wash deals post-close?
Membership churn above sustainable levels, deferred equipment maintenance the buyer must fund after closing, and lease structures that give landlords termination rights on a sale. Industry monthly churn runs 7.3% across more than 3,000 locations tracked by Rinsed. A membership base that is losing members faster than it adds them destroys the recurring revenue thesis the acquisition was built on.
