Faster89
#2,477 of 19,095
Real-user data through
Recent
CrUX rolling 28-day window
Page and vendor scan
Stale
Latest usable Lighthouse measurement · over 14 days old
Sitemap checked
Not availableNo data
Latest recorded sitemap check
Head to head
Faster
Provider average87
#5 of 24 providers
Verdict
Mark Porter GMC is faster
Scores 89 vs 87 and wins 4 of 5 Core Web Vitals. Main content renders 16% sooner.
Metric by metric
Real-user figures are the 75th percentile of Chrome visits.
Metric
Mark Porter GMC
DealerOnReal-user experience
Performance score
Weighted Core Web Vitals · higher is better
89
+2 pts
87
Largest Contentful Paint
LCP · lower is better
1,321 ms
16% faster
1,579 ms
Interaction to Next Paint
INP · lower is better
261 ms
187 ms
28% faster
Cumulative Layout Shift
CLS · lower is better
0.12
0.03 less shift
0.15
First Contentful Paint
FCP · lower is better
1,043 ms
15% faster
1,223 ms
Time to First Byte
TTFB · lower is better
652 ms
6% faster
696 ms
Lab test · home page
Page weight
Home page download · lower is better
24.9 MB
13.5 MB
46% lighter
Requests
Files the home page loads · lower is better
385
295
90 fewer
Third-party requests
Outside scripts and pixels · lower is better
309
197
112 fewer
JavaScript
Script download · lower is better
7.91 MB
4.44 MB
44% lighter
SEO
Lighthouse · higher is better
100
+7 pts
93
Accessibility
Lighthouse · higher is better
96
+4 pts
92
Best practices
Lighthouse · higher is better
73
75
+2 pts
More matchups
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