Franchise opportunities compared

    CARSTAR vs HHO Carbon Clean Franchise System

    Reviewed figures from each brand's Franchise Disclosure Document (FDD), side by side. Each figure carries its FDD year and page. This is not a ranking or recommendation, and the two FDDs may cover different years and location groups.

    Initial investment · Item 7

    CARSTAR

    $23,500 – $804,300

    2025 FDD · Item 7

    HHO Carbon Clean Franchise System

    $108,380 – $185,330

    2025 FDD · Item 7 · PDF p. 18

    Initial franchise fee · Item 5

    CARSTAR

    $10,000

    2025 FDD · Item 5 · PDF p. 29

    HHO Carbon Clean Franchise System

    $44,900

    2025 FDD · Item 5 · PDF p. 10

    Royalty · Item 6

    CARSTAR

    1.5% or $1,000/mo min

    2025 FDD · Item 6 · PDF p. 36

    HHO Carbon Clean Franchise System

    6%/7%/8% or monthly min

    2025 FDD · Item 6 · PDF p. 12

    Before you compare

    • Both sets of figures come from 2025 FDDs.
    • CARSTAR discloses more than one business format, so the investment range spans formats; the full report breaks them out.
    • Only CARSTAR has reviewed Item 19 figures here.

    Financial commitment

    Estimated initial investment (Item 7)

    CARSTAR

    $23,500 – $804,300
    2025 FDD · Item 7

    HHO Carbon Clean Franchise System

    $108,380 – $185,330
    Total Estimate - Single Territory
    2025 FDD · Item 7 · PDF p. 18
    Standard initial franchise fee (Item 5)

    CARSTAR

    $10,000
    2025 FDD · Item 5 · PDF p. 29

    HHO Carbon Clean Franchise System

    $44,900
    Additional territories receive discounts when purchased at signing, subject to market type, availability, and franchisor discretion.
    2025 FDD · Item 5 · PDF p. 10
    Royalty (Item 6)

    CARSTAR

    1.5% or $1,000/mo min
    Monthly Base Franchise Fee
    2025 FDD · Item 6 · PDF p. 36

    HHO Carbon Clean Franchise System

    6%/7%/8% or monthly min
    Royalty
    2025 FDD · Item 6 · PDF p. 12
    Brand / advertising fund (Item 6)

    CARSTAR

    $500
    Insurance and Marketing Fund Fee minimum
    2025 FDD · Item 6 · PDF p. 31

    HHO Carbon Clean Franchise System

    0% of percentage of gross sales
    Brand Development Fund
    2025 FDD · Item 6 · PDF p. 12

    System scale & health

    Total outlets (Item 20)

    CARSTAR

    471
    Outlets at end of 2024
    2025 FDD · Item 20 · PDF p. 82

    HHO Carbon Clean Franchise System

    15
    Outlets at end of 2024
    2025 FDD · Item 20 · PDF p. 43
    Net outlet change (Item 20)

    CARSTAR

    +25
    Calculated: 446 at end of 2022 → 471 at end of 2024

    HHO Carbon Clean Franchise System

    +4
    Calculated: 11 at end of 2022 → 15 at end of 2024
    Outlet exits (Item 20)

    CARSTAR

    32
    Closures, terminations & non-renewals in 2024 · Calculated turnover 7.0% of outlets at start of year
    2025 FDD · Item 20 · PDF p. 82

    HHO Carbon Clean Franchise System

    Not available
    No complete exit records for a year
    Franchising since (Item 1)

    CARSTAR

    Not available
    Not in reviewed records

    HHO Carbon Clean Franchise System

    2020
    2025 FDD · Item 1 · PDF p. 8
    Franchisor founded (Item 1)

    CARSTAR

    Not available
    Not in reviewed records

    HHO Carbon Clean Franchise System

    2020
    2025 FDD · Item 1 · PDF p. 8

    Financial performance (Item 19), by location group

    CARSTAR
    Locations counted not stated in the reviewed record — CARSTAR franchised facilities, Bottom 50% by 2024 average Gross Sales
    198 units
    other Part A
    2025 FDD · Item 19 · PDF p. 78
    Locations counted not stated in the reviewed record — CARSTAR franchised facilities, Top 50% by 2024 average Gross Sales
    199 units
    other Part A
    2025 FDD · Item 19 · PDF p. 78
    Locations counted not stated in the reviewed record — Part B franchisee-operated facilities converting existing repair businesses; FY…
    $1,340,572
    other Part B
    2025 FDD · Item 19 · PDF p. 80
    +16 more groups in the full report
    HHO Carbon Clean Franchise System

    Not disclosed — no Item 19 financial performance representation

    Item 19 groups are shown separately and never combined. Revenue or sales figures are not profit. Net outlet change and turnover are Franopolis calculations from the disclosed counts; turnover is a count-based rate, not a measure of owner earnings.

    CARSTAR vs HHO Carbon Clean Franchise System: common questions

    Which costs less to open, CARSTAR or HHO Carbon Clean Franchise System?
    CARSTAR: $23,500 – $804,300 (2025 FDD · Item 7); HHO Carbon Clean Franchise System: $108,380 – $185,330 (2025 FDD · Item 7 · PDF p. 18). These are each franchisor's Item 7 estimated initial investment. The low end of the disclosed estimate is lower for CARSTAR. At least one range spans several business formats. Estimates are not quotes, and the FDD years may differ.
    How do CARSTAR and HHO Carbon Clean Franchise System royalties compare?
    CARSTAR: 1.5% or $1,000/mo min (2025 FDD · Item 6 · PDF p. 36); HHO Carbon Clean Franchise System: 6%/7%/8% or monthly min (2025 FDD · Item 6 · PDF p. 12). Royalties as disclosed in Item 6; other recurring fees are listed separately.
    Which has more locations, CARSTAR or HHO Carbon Clean Franchise System?
    CARSTAR: 471 (2025 FDD · Item 20 · PDF p. 82); HHO Carbon Clean Franchise System: 15 (2025 FDD · Item 20 · PDF p. 43). Total outlets from Item 20. Outlet counts do not indicate territory availability or franchisee results.
    Do CARSTAR and HHO Carbon Clean Franchise System disclose financial performance (Item 19)?
    CARSTAR has reviewed Item 19 figures for 19 location groups; HHO Carbon Clean Franchise System makes no Item 19 financial performance representation. Different location groups are not directly comparable, and revenue is not profit.

    Answers restate the reviewed figures above. Not a ranking or recommendation.

    How Franopolis reviews FDD figures

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