The average L.A. driver lost more than 100 hours and more than $2,400 in fuel and productivity last year.

Cheap gas and a surging economy are taxing the nation’s roads and contributing to congestion that cost U.S. motorists almost $300 billion last year in wasted time and fuel, according to a new report.

Los Angeles had the worst traffic in the world among the 1,064 cities studied by transportation analytics firm INRIX. The average driver wasted 104 hours sitting in gridlock during the busiest commuting times last year, and lost $2,408 each in squandered fuel and productivity.