FTC Act §5 prohibits deceptive acts that mislead a reasonable consumer in any material way — intent is irrelevant. Unsubstantiated performance guarantees ('Save 10 hours per week — guaranteed'), capability overclaims ('AI-powered' applied to a rule-based filter), and unverified superlatives ('#1 tool for X') expose the company to FTC enforcement, civil investigative demands, and potential consent orders requiring corrective advertising. Beyond legal risk, a consumer who tries the product and finds the claims false files chargebacks, leaves one-star reviews, and churns — compounding the business damage.
Critical because deceptive capability or performance claims violate FTC Act §5 on first exposure, creating direct enforcement liability and triggering consumer harm that cannot be reversed by a later correction.
Add a substantiation note — data source, date, methodology link — immediately adjacent to every specific quantitative claim on marketing pages. For each flagged claim category:
Performance guarantee
BEFORE: "Guaranteed to save 10 hours per week"
AFTER: "Our customers report saving an average of 8 hours per week
(survey of 120 users, Q4 2025; methodology at /docs/survey)"
AI/capability claim
BEFORE: "AI-powered recommendations"
AFTER: "Recommendations based on your usage history"
(if no ML model is present)
Social proof
BEFORE: "Used by 10,000 teams"
AFTER: "10,000 registered users" or "500 paying teams"
Run a copy audit against the FTC deception standard before each marketing page deploy. Comparative claims must cite a benchmark with date, methodology, and test conditions.
ID: ftc-consumer-protection.advertising-claims.no-deceptive-claims
Severity: critical
What to look for: Count all relevant instances and enumerate each. Before evaluating, extract and quote any relevant configuration or UI text found. Read all marketing copy on the homepage, landing pages, feature pages, and in-app upgrade prompts. Identify any claims about product capabilities, performance, outcomes, or competitive positioning. For each significant claim, evaluate: is it objectively verifiable, and is there accessible supporting evidence? Flag these patterns: (1) outcome guarantees ("you will save 10 hours per week," "guaranteed to increase conversions") with no methodology or evidence; (2) capability claims that go beyond what the product actually does (e.g., "AI-powered" applied to a simple keyword filter); (3) comparative claims without verified data ("the #1 tool for X," "faster than [Competitor]" without a benchmark); (4) omissions that make true statements misleading (e.g., "used by 10,000 teams" when 9,500 are free users and the claim implies commercial adoption). Under the FTC Act, a claim is deceptive if it is likely to mislead a reasonable consumer in a material way — intent is not required.
Pass criteria: All material claims on marketing pages are either obviously subjective ("we love building this"), substantiated by accessible evidence (studies, methodology, user data), or clearly labeled as estimates/projections. No absolute performance guarantees without documented basis. Comparative claims cite a verifiable source. "Free" tiers are not described in ways that imply unlimited access if limits exist. A partial or placeholder implementation does not count as pass. Report the count even on pass.
Fail criteria: Marketing copy makes specific performance or outcome claims without any supporting evidence or methodology. Claims are phrased as facts when they are projections. Competitive comparisons use unverified superlatives. A capability is advertised that the product does not actually provide.
Skip (N/A) when: The application has no marketing copy — it is an internal tool or private API with no public-facing marketing pages.
Detail on fail: Specify the claim and why it is problematic. Example: "Homepage states 'Save 10 hours per week — guaranteed' with no methodology or evidence. This is an unsubstantiated performance guarantee." or "Feature page describes the tool as 'AI-powered' but codebase shows only rule-based filtering with no ML model." or "Landing page claims '#1 SEO tool for indie hackers' with no source, survey, or methodology cited."
Remediation: Audit marketing copy against the FTC's standard: "a claim is deceptive if it's likely to mislead a reasonable consumer in a material way." For each flagged claim:
Claim remediation checklist:
1. Performance guarantees ("Save 10 hours per week")
Fix: Add basis or qualify the claim.
BEFORE: "Guaranteed to save 10 hours per week"
AFTER: "Our customers report saving an average of 8 hours per week
(based on a survey of 120 users in Q4 2025)"
OR remove the specific figure and use: "Save significant time
on [specific task]"
2. Comparative claims ("Faster than [Competitor]")
Fix: Cite a benchmark. Include date, methodology, test conditions.
Example: "50% faster data export than Competitor X
(benchmark run February 2026 on 10,000-row CSV export;
methodology at /docs/benchmarks)"
3. AI/capability overclaims
Fix: Describe what the system actually does.
BEFORE: "AI-powered recommendations"
AFTER: "Recommendations based on your usage history"
(if it's a rule-based system with no ML)
4. Social proof that implies more than it shows
BEFORE: "Used by 10,000 teams"
AFTER: "10,000 registered users" or "500 paying teams"
(match the claim to what the number actually measures)
Place a brief substantiation note (data source, date, methodology link) near any specific quantitative claim. This protects you under FTC Section 5 and builds user trust.
Cross-reference: For related patterns and deeper analysis, see the corresponding checks in other AuditBuffet audits covering this domain.