Some of Canada’s biggest cities are among the world’s worst for traffic congestion , according to a new report. Though none cracked the top 10 or even the top 20.

The three worst traffic cities in the world were Istanbul in first, followed by Mexico City and Chicago, according to new data from Inrix, a company that analyzes traffic data from connected vehicles like cars, trucks and other sources.

Inrix compared data from road sensors and vehicles around the world from January to September 2025 and compared it to the same data from 2024 and 2023. It then ranked cities based on the total number of hours people lost while in traffic during peak commute periods compared to off-peak conditions relative to the size of the city and its population.

Drivers in Istanbul lost 118 hours in 20

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