United States (US) auto giant General Motors (GM), on Monday said combined U.S. sales of the 12 vehicles that get an EPA estimated 30 mpg or better on the highway are expected to reach 100, 000 units or more in March, a record for the Detroit-based automaker.

Manufacturers, including GM, will officially report U.S. sales numbers for March on Tuesday.

By the end of 2012, GM will have new or significantly freshened Chevrolet, Buick, GMC and Cadillac cars and crossovers in segments that represent 60 percent of the U.S. light vehicle industry.

Last year, 40 percent of new GM vehicles sold had four-cylinder engines, according to GM. The automaker currently offers four models with turbocharged engines and will double that number for the 2013 model year.

GM Fuel Economy Leaders on Sale Today
Vehicle Powertrain EPA Est. Highway Fuel Economy
2012 Chevrolet Sonic 1.8-liter I-4
1.4-liter I-4 turbo
35 mpg
40 mpg
2012 Chevrolet Cruze 1.8-liter I-4
1.4-liter I-4 turbo
up to 36 mpg
up to 42 mpg
2012 Chevrolet Volt 1.4-liter I-4 with electric drive unit 93 mpg-e
2012 Chevrolet Malibu 2.4-liter I-4 33 mpg
2013 Chevrolet Malibu Eco eAssist 37 mpg
2012 Chevrolet Camaro 3.6-liter V-6 30 mpg
2012 Chevrolet Impala 3.6-liter V-6 30 mpg
2012 Chevrolet Equinox 2.4-liter I-4 FWD 32 mpg
2012 Buick Verano 2.4-liter I-4 32 mpg
2012 Buick Regal eAssist 36 mpg
2012 Buick LaCrosse eAssist 36 mpg
2012 GMC Terrain 2.4-liter I-4 FWD 32 mpg


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