Miami, FL — Car Care Product Testing

Car care products measured.
Not just marketed.

Independent testing of ceramic coatings, polishing compounds, wash soaps, and decontamination products. Hydrophobic durability tracked. Correction capability scored. Every product purchased at retail.

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60+
Products Tested
90-Day
Coating Exposure Data
$0
Brand Sponsorship
Test Domains

What We Test

Four car care product categories evaluated using standardized measurement protocols — same methodology regardless of brand or price.

💎

Ceramic Coatings

Hydrophobic contact angle, UV resistance, durability at 30/60/90 days, and application difficulty scored per product.

✨

Polish & Compounds

Defect correction per pass, finishing clarity, dust generation, and working time measured under standardized light conditions.

🧼

Wash & Dry

Lubricity, foam density, spot-free drying performance, and cost per wash benchmarked across brands at same dilution ratio.

🧱

Clay & Decontamination

Contamination pickup rate, marring risk on fresh clear coat, and panel coverage speed rated per product type.

Scored Findings

Latest Product Reviews

Every product purchased at retail, tested to the same standard, scored without brand influence.

All reviews →
Ceramic coating products organized on a testing surface for durability evaluation 90-Day Test
Ceramic Coatings

Gtechniq Crystal Serum vs CarPro CQuartz vs Gyeon Q2: Hydrophobic Durability at 90 Days Under Miami Sun

Clear Winner at 90d Read →
Polish and compound products tested for single-step correction per pass 8.7 / 10
Polish & Compounds

Meguiar’s M205 vs Sonax Perfect Finish vs 3D One: Single-Step Polish Correction Measured Per Pass

Top Finishing Pick 3 Tested Read →
Budget vs premium car wash soap lubricity and spot-free performance test Closer Than Expected
Wash & Dry

The $8 Car Wash Soap vs The $25 Car Wash Soap: Lubricity and Spot-Free Performance Compared

Premium Wins on Lubricity Read →
Clay bar versus clay mitt versus chemical decontamination spray panel speed test 3 Methods
Clay & Decontamination

Clay Bar vs Clay Mitt vs Chemical Decon Spray: Contamination Removal Speed Per Panel

Speed + Marring Data Read →
Spray sealant longevity tracking 5 brands over 60 days outdoor parking 60-Day Tracking
Coatings & Sealants

Spray Sealant Longevity Shootout: 5 Brands Tracked Weekly for 60 Days of Outdoor Parking

2 Still Beading at 60d 1 Gone by Week 3 Read →
Microfiber towel scratch risk test on fresh clear coat under controlled pressure 6 Brands Tested
Wash & Dry

Microfiber Towel Scratch Risk: 6 Brands Tested on Fresh Clear Coat Under Controlled Pressure

3 Zero Marring 1 Clear Risk Read →
90 Days
Longest coating durability
tracking period per product
Miami Sun
UV exposure condition
for all outdoor durability tests
Same Panel
Single substrate used per
category for consistent comparison
Retail Only
Every product purchased
at shelf price, no press kits
Car care product testing setup with coatings and compounds organized on a test surface
About Auto Repair D&J

Measured, not marketed.

AUTO REPAIR D&J LLC (Document Number L11000141999) is an independent car care product evaluation company based in Miami, Florida. We test ceramic coatings, polishing compounds, wash soaps, and decontamination products using standardized measurement protocols.

Every product is purchased at retail. We do not detail vehicles, wash cars for clients, or apply coatings for compensation. We score the products that those jobs depend on.

We do not detail vehicles or sell car care products. We publish independent test data.

✓All products purchased at retail
✓Same substrate for every comparison
✓Zero affiliate revenue
✓90-day exposure data published

Product test data before your next purchase.

Car care product results only. No brand content. No paid promotions. No shared data.

Test results only. Unsubscribe at any time.