B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
40.1%
40.1% -- product to cart progression increase for luxury brand websites (2026)
A 0.1-second improvement in website load time produced a 40.1% increase in product-to-cart progression for luxury brands.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
40.1%
Unit
Percentage
Data Vintage
2026
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Deloitte/Google
Primary
Tier C
https://www.itshco.com/blog/luxury-store-website-loses-customers ↗
Source Article
Why Your Luxury Store's Website Loses Customers in 3 Seconds
Walk into any independent jewelry store or watch boutique in America and you'll see the same thing. Custom display cases. Perfect lighting. A showroom that cost six figures to build out. Every detail considered.
Then pull up their website on your phone.
A template. Stock photography. Copy that reads…
Original Research
Deloitte/Google
· Original study ↗
Methodology
Citing Deloitte/Google load-time study
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
luxury brand websites: 40.1% product to cart progression increase. Source: Deloitte/Google (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/load-time-cart-progression-luxury-2026
HTML Embed
<blockquote cite="https://lighthousedata.io/data/load-time-cart-progression-luxury-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>40.1%</strong> -- product to cart progression increase for luxury brand websites<br><small>Source: Deloitte/Google (2026) · <a href="https://lighthousedata.io/data/load-time-cart-progression-luxury-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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