SPEEDME journalists have analyzed the U.S. Environmental Protection Agency's Automotive Trends Report. According to data for the 2024 model year, General Motors' fleet averaged 22.8 mpg—the second-worst result among major U.S. automakers. Only Stellantis performed worse, trailing by just 0.05 mpg.

For context, the market average reached 27.3 mpg. Competitors posted significantly better numbers: Honda at 31.0 mpg, Hyundai at 29.7 mpg, and Toyota at 29.0 mpg. Despite GM's improvement of 0.25 mpg compared to 2023, the pace of progress remains modest.

The journalists note that excluding electric vehicles and plug-in hybrids would make GM's statistics look even weaker. Tesla, with its fully electric lineup, shows an equivalent of 117.0 mpg.

Over the past five years, the market's average fuel efficiency has improved from 25.0 mpg to 27.3 mpg. Toyota, BMW, and Mercedes-Benz have shown the most notable progress. GM's situation is complicated by its high share of large SUVs and pickups—like the Tahoe and Suburban—which traditionally have higher fuel consumption.

Expanding its electric vehicle lineup in the 2025 model year may partially improve these figures. However, the EPA points out that a significant leap will require broader adoption of hybrids and increased efficiency in internal combustion engines.