London Tops Global List for Slowest Driving Speeds in a Capital City.

Findings from the 2025 TomTom Traffic Index

According to Novyny.live: According to the 2025 TomTom Traffic Index, London is the slowest capital city in the world for drivers, with an average speed of just 16.5 km/h (approximately 10.3 mph). This ranking places the UK capital at the forefront of global cities experiencing the most severe traffic delays. Other major cities with notably slow average driving speeds include:

• Barranquilla, Colombia, at 16.4 km/h;
• Bengaluru, India;
• Kolkata, India;
• Lima, Peru.

The study also measured the world's highest congestion levels. Mexico City leads this category with a congestion rate of 75.9%, indicating severe traffic issues. Other urban centers with alarmingly high congestion figures are:

• Bengaluru at 74.4%;
• Dublin at 72.9%;
• Lodz at 72.8%;
• Pune at 71.1%.

These figures underscore a widespread trend of increasing gridlock in major metropolitan areas worldwide. For perspective, a congestion level of 75% means a typical 30-minute trip takes 75% longer during peak hours.

The data from the 2025 TomTom Traffic Index highlights the critical traffic management challenges facing the world's largest cities. London's position as the slowest capital necessitates urgent action from city authorities to improve mobility. The analysis of congestion in other global hubs similarly points to a pressing need for comprehensive solutions to reduce delays and enhance the quality of life for urban residents.