GM Expects 40% Mileage Boost from Two-mode Hybrid SUVs

Improvement translates into 19-20 mpg performance, up for the the original 25% fuel economy improvement.

Published: 29-Jul-2007

General Motors (GM) said Tuesday that it now expects 40% better fuel economy in city driving from the gasoline-electric hybrid versions of its full-size SUVs than their gasoline-only counterparts, giving the hybrid Chevrolet Tahoes and GMC Yukons 19 or 20 miles a gallon in stop-and-go driving.

That's up from earlier forecasts of a 25% improvement and would give the big SUVs better mileage than some mid- and full-size, gasoline-power family sedans. It also would be better than so-called crossover SUVs that are stealing sales from truck-based SUVs such as Tahoe because crossovers typically use less fuel.

The Tahoe and Yukon, due in showrooms in the fall, will be the first full-size gasoline-electric hybrid SUVs. The so-called dual-mode hybrid system was jointly developed with Chrysler Group and BMW, which plan to offer it in vehicles next year. GM will offer it next year on Cadillac Escalade, then on Chevy and GMC full-size pickups. Saturn models will get a version later.


Mark Phelan tests three different fuel efficiency technologies and concludes that hybrids are the past. Pictured are first Chrysler 300s to come off of European assembly line. Diesel is offered as an option in Europe on this model, but not in North America.

The PML Mini QED supports an all-electric range of 200-250 miles and has a total range of about 932 miles (1,500 km).

C-Metisse concept coupe powered by diesel and electric wheel motors, resulting in combined fuel consumption of 6.5l/100km (36.1mpg).


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