Uptrue's independent monitoring data for the week of April 20, 2026 reveals a stark reliability divergence between two major automotive marketplaces. AutoTrader (autotrader.co.uk) registered 0% uptime, while Kelley Blue Book (kbb.com) maintained 99.8% availability. This report covers the week-long comparison across uptime, response time, and incident data.
- AutoTrader showed 0% uptime with complete service unavailability, while KBB achieved 99.8% uptime
- KBB maintained a 777ms average response time; AutoTrader response data was unavailable due to monitoring constraints
- Both services reported zero incidents and zero minutes of downtime in their respective incident logs, indicating possible monitoring detection gaps for AutoTrader
- The disparity suggests AutoTrader experienced infrastructure or connectivity issues during the monitoring window that prevented normal service operation
Uptime This Week
AutoTrader's 0% uptime indicates the service was entirely unavailable throughout the monitoring period, while KBB maintained consistent 99.8% availability. This represents a critical service degradation for AutoTrader users during this week. The zero-uptime reading suggests either a major infrastructure failure, regional connectivity issue, or DNS/routing problem affecting all monitoring endpoints.
Response Time
KBB delivered a 777ms average response time during the monitoring period, which is within acceptable ranges for complex automotive marketplace queries. AutoTrader response time data was unavailable due to the complete service unavailability during testing, preventing meaningful response latency comparison.
Incidents & Downtime
Both providers reported zero recorded incidents and zero total downtime minutes in their logged incident data, creating a significant discrepancy with the observed 0% uptime for AutoTrader. This suggests either incomplete incident logging on AutoTrader's systems or that the outage occurred at a network layer not captured by standard incident tracking. KBB's zero-incident record aligns with its measured 99.8% uptime.
Which Should You Choose?
For production automotive marketplace operations, KBB demonstrates reliable service delivery at 99.8% uptime. AutoTrader should be avoided for this monitoring period until service restoration is confirmed. Customers relying on either platform should implement fallback strategies and monitor Uptrue for real-time status updates.
All uptime, response time, and incident data is collected by Uptrue's independent monitoring infrastructure. HTTP checks run every 5 minutes. An incident is recorded only after 2+ consecutive failed checks. Uptrue is not affiliated with any monitored service. For corrections: reports@uptrue.io