Results Summary
AutoCorner
A total of 631 AutoCorner hosted websites were reviewed.
A 98th percentile was calculated as 5.105s and any sites taking longer to load than this were excluded from final calculations. In this case, there were 12 sites that were excluded for this reason.
Average page load time: 1.924s (when excluding the 12 websites).
If you include those 12 websites, the average page load was time: 2.003
Dealer Car Search
A total of 2958 Dealer Car Search hosted websites were reviewed.
A 98th percentile was calculated as 27.629s and any sites taking longer to load than this were excluded from final calculations. In this case, there were 58 sites that were excluded for this reason.
Average page load time: 12.889s (when excluding the 58 websites).
If you include those 58 websites, the average page load was time: 13.538s
Carsforsale
A total of 2325 Cars For Sale hosted websites were reviewed.
A 98th percentile was calculated as 28.963s and any sites taking longer to load than this were excluded from final calculations. In this case, there were 46 sites that were excluded for this reason.
Average page load time: 10.218s (when excluding the 46 websites).
If you include those 46 websites, the average page load was time: 10.914s
AutoRevo
A total of 456 AutoRevo hosted websites were reviewed.
A 98th percentile was calculated as 12.906s and any sites taking longer to load than this were excluded from final calculations. In this case, there were 9 sites that were excluded for this reason.
Average page load time: 4.142s (when excluding the 9 websites).
If you include those 9 websites, the average page load was time: 4.445s
V12 Software
A total of 998 V12 Software hosted websites were reviewed.
A 98th percentile was calculated as 23.001s and any sites taking longer to load than this were excluded from final calculations. In this case, there were 19 sites that were excluded for this reason.
Average page load time: 6.900s (when excluding the 19 websites).
If you include those 19 websites, the average page load was time: 7.411s
Wayne Reaves
A total of 636 Wayne Reaves hosted websites were reviewed.
A 98
th percentile was calculated as 14.121s and any sites taking longer to load than this were excluded from final calculations.
In this case, there were 12 sites that were excluded for this reason.
Average page load time: 4.782s (when excluding the 12 websites).
If you include those 11 websites, the average page load was time: 5.028s
JTZ Enterprise
A total of 64 JTZ Enterprise hosted websites were reviewed.
A 98th percentile was calculated as 16.592s and any sites taking longer to load than this were excluded from final calculations. In this case, there were 1 sites that were excluded for this reason.
Average page load time: 10.634s (when excluding the 1 websites).
If you include those 1 websites, the average page load was time: 10.781s
eCarList
A total of 312 eCarList hosted websites were reviewed.
A 98th percentile was calculated as 21.704s and any sites taking longer to load than this were excluded from final calculations. In this case, there were 6 sites that were excluded for this reason.
Average page load time: 9.833s (when excluding the 6 websites).
If you include those 6 websites, the average page load was time: 10.086s
The Legal Stuff
Methodology
Our testing methodology is identical for all systems tested, and we placed no favoritism to any one system over the other.
All tests were preformed out of the Dulles, VA datacenter using WebPagetest's standard settings of an 1.5Mb DSL connection using mutliple web browsers as to reduce any browser rendering anomalies.
All tests were preformed on page 1 of the inventory listing pages as this representes the hardest loading page of any system.
The tests were done at all times of the day & night and every day of the week as to not show any favoritism during peak or off-peak server load times and had random sleep (wait) phases between the tests as to not overwhelm any one server with numerous requests.
At first, we took a list of all known websites hosted by a specific provider and using an automated means verified the websites were live and that each had a minimum of 25 vehicles in inventory.
Any website that did not have the minimum of 25 vehicles in inventory were excluded as this would not represent a full and complete inventory listing page to test the load times.
We also attempted, to the best of our abilities, to test a minimum of 75% of all used car websites hosted by each provider.
The issue is none of the providers tested provide the public with a list of their customers.
For this reason, we were forced to use automated and non-automated processes to determine a close approximation of their total customer count.
The verified list was then passed over to the independed third party testing system
www.WebPageTest.org (info below) for speed testing.
The results from WebPagetest.org were saved to our server and results were calculated after processing the cached data from WebPagetest.org.
In an effort of fairness, we are using a 98
th percentile calculation where the slowest 2% of websites are considered "web anomalies" and for that reason were dropped from the calcuations.
AboutWebPagetest.org
"WebPagetest is an open source project that is primarily being developed and supported by Google as part of our efforts to make the web faster.
WebPagetest is a tool that was originally developed by AOL for use internally and was open-sourced in 2008 under a BSD license.
The platform is under active development on GitHub and is also packaged up periodically and available for download if you would like to run your own instance.
The online version at www.webpagetest.org is run by the WPO Foundation for the benefit of the performance community with several companies and individuals providing the testing infrastructure around the globe.
(copied from the source http://www.webpagetest.org/about)
98th Percentile Calculation Codes
The following are the lines of Perl code used by our system to calculate the 98
th Percentile
use Statistics::Descriptive;
$stat = Statistics::Descriptive::Full->new();
$stat->add_data(@load_times);
$per98 = $stat->percentile(98);
