Improving Facebook Ads Relevance Diagnostics: Fixing 'Below Average' Quality (2026)

Google has "Quality Score." Meta has Relevance Diagnostics. It is a report card that grades your ad compared to competitors targeting the same audience. It appears after ~500 impressions.

The grades:

• Above Average (Top 20%)
• Average (35% - 55%)
• Below Average (Bottom 35%, Bottom 20%, Bottom 10%)

If you are Bottom 10%, Meta charges you a "Quality Tax" (Higher CPM). If you are Above Average, Meta gives you a "Quality Discount" (Lower CPM).

In this "Mega-Authority" guide, we cover:

1. Quality Ranking: Visuals and Hook.
2. Engagement Rate Ranking: Likes/Comments/Clicks.
3. Conversion Rate Ranking: The Offer/Landing Page.
4. The Matrix: Diagnosing the mix.

Part 1: Quality Ranking (The "Stop" Signal)

"How does the ad look?"

• Below Average?
  • Cause: Creating "Ad-like" images (Stock photos, aggressive text overlays). Low resolution. Bait-and-switch.
  • Fix: Switch to native UGC. Remove "Salesy" text.

Part 2: Engagement Rate Ranking (The "Click" Signal)

"Are people interacting?"

• Below Average?
  • Cause: Boring hook. No reason to click.
  • Fix: Punchier initial 3 seconds. Ask a question in the copy. Use a "See Price" CTA.

Part 3: Conversion Rate Ranking (The "Buy" Signal)

"Are people buying after clicking?"

• Below Average?
  • Cause: Disconnect between Ad and Landing Page. Slow site speed. Bad Offer.
  • Fix: Check "Message Match." If ad says "50% Off," page must say "50% Off."

Part 4: The Diagnostic Matrix

Scenario A: Low Quality / Low Engagement / High Conversion

• Diagnosis: The ad is ugly and clickbait, but the product is great.
• Action: Polish the creative but keep the offer.

Scenario B: High Quality / High Engagement / Low Conversion

• Diagnosis: Viral Video. Everyone loves watching it, nobody buys.
• Action: The creative is too entertaining. Make the product the hero. Fix the Landing Page.

Scenario C: Average / Average / Average

• Diagnosis: "Meh."
• Action: Test a radical new angle.

Part 5: Summary & Checklist

Your Action Plan:

1. Filter your ads by "Active."
2. Add the 3 Relevance Columns to your view.
3. Sort by Spend.
4. Kill any ad that is "Bottom 20%" in Quality Ranking (It is inflating your costs).
5. Iterate based on the specific failing metric.

Don't ignore the report card.

The 3×3 Diagnostic Matrix

The three Relevance Diagnostics — Quality Ranking, Engagement Rate Ranking, Conversion Rate Ranking — can each be Above Average, Average, or Below Average. That's 27 possible combinations. Here are the nine most common states and the precise action for each:

The most insidious state is the bottom-left of the matrix: Below Avg / Above Avg / Average — clickbait. High engagement hides the quality problem. Meta's auction will eventually down-rank this ad as users engage but don't convert, driving up CPMs even while CTR stays high.