With gas prices skyrocketing across America and showing little sign of letting up, there is bound to be renewed interest in smaller, more eco-friendly passenger cars this year. With that in mind, we figured we’d compile an easy-to-read article and accompanying chart to lay out which GM vehicles get the best fuel economy, and which will cost more to keep fuelled up.
As our helpful chart indicates, the Chevy Spark is the most fuel-efficient GM vehicle, achieving a city fuel economy rating of 30 mpg and a highway fuel economy rating of 38 mpg. This equates to a combined fuel economy rating of 33 mpg. The Chevy Malibu mid-size sedan is close behind it at 32 mpg combined, followed by the Chevy Trailblazer subcompact crossover at 31 mpg combined.
|Model||Powertrain||Drivetrain||Required Fuel||Recommended Fuel||City MPG||Highway MPG||Combined MPG|
|Chevy Spark||1.4L I4 LV7||FWD||87||30||38||33|
|Chevy Malibu||Turbo 1.5L I4 LFV||FWD||87||29||36||32|
|Chevy Trailblazer||Turbo 1.3L I3 L3T||FWD||87||29||33||31|
|Buick Encore GX||Turbo 1.3L I3 L3T||FWD||87||29||32||30|
|Chevy Equinox||Turbo 1.5L I4 LYX||FWD||87||26||31||28|
|Buick Encore||Turbo 1.4L I4 LE2||FWD||87||24||32||27|
|Cadillac CT4||Turbo 2.0L I4 LSY||RWD||87||93||23||34||27|
|Cadillac CT5||Turbo 2.0L I4 LSY||RWD||87||93||23||33||27|
|Chevy Trax||Turbo 1.4L I4 LE2||FWD||87||24||32||27|
|GMC Terrain||Turbo 1.5L I4 LYX||FWD||87||25||30||27|
|Buick Envision||Turbo 2.0L I4 LSY||FWD||87||93||24||31||26|
|Cadillac XT4||Turbo 2.0L I4 LSY||FWD||87||93||24||30||26|
|Chevy Silverado 1500||Turbo-diesel 3.0L I6 LM2||RWD||Diesel||23||31||26|
|GMC Sierra 1500||Turbo-diesel 3.0L I6 LM2||RWD||Diesel||23||30||26|
|Chevy Camaro||Turbo 2.0L I4 LTG||RWD||87||93||22||30||25|
|Chevy Blazer||Turbo 2.0L I4 LSY||FWD||87||22||29||25|
|GMC Acadia||Turbo 2.0L I4 LSY||FWD||87||22||29||25|
|Cadillac XT5||Turbo 2.0L I4 LSY||FWD||87||93||22||29||24|
|Chevy Tahoe||Turbo-diesel 3.0L I6 LM2||RWD||Diesel||21||28||24|
|Cadillac Escalade||Turbo-diesel 3.0L I6 LM2||RWD||Diesel||21||27||23|
|Cadillac XT6||Turbo 2.0L I4 LSY||FWD||87||93||21||27||23|
|Chevy Suburban||Turbo-diesel 3.0L I6 LM2||RWD||Diesel||21||27||23|
|Chevy Colorado||Turbo-diesel 2.8L I4 LWN||RWD||Diesel||20||30||23|
|GMC Yukon||Turbo-diesel 3.0L I6 LM2||RWD||Diesel||21||27||23|
|GMC Yukon XL||Turbo-diesel 3.0L I6 LM2||RWD||Diesel||21||27||23|
|GMC Canyon||Turbo-diesel 2.8L I4 LWN||RWD||Diesel||20||30||23|
|Buick Enclave||3.6L V6 LFY||FWD||87||18||26||21|
|Chevy Traverse||3.6L V6 LFY||FWD||87||18||27||21|
|Chevy Corvette||6.2L V8 LT2||RWD||91||93||16||24||19|
The Cadillac CT4 and Cadillac CT5 are also notable entries toward the top of the chart. These four-doors have decent combined fuel economy ratings of 27 mpg and unlike the Chevy vehicles that occupy the top three spots, have somewhat powerful engines and luxurious interiors. This is important, as consumers considering buying a more eco-friendly vehicle should know they don’t always have to sacrifice performance and comfort for fuel economy. It’s worth noting that our chart includes only the most efficient available powertrains for a given vehicle. In the case of the CT4 and CT5, the most efficient powertrain/drivetrain combination consists of a turbocharged 2.0L LSY four-cylinder engine, GM’s eight-speed automatic transmission and rear-wheel drive.
Not surprisingly, one of the least fuel-efficient models in GM’s product portfolio is the C8 Corvette Stingray, which has a city fuel economy rating of 16 mpg and a highway fuel economy rating of 24 mpg, equating to a combined rating of 19 mpg. The Corvette is a mid-engine sports car that produces just shy of 500 horsepower, so it should go without saying that buyers of this vehicle are not too concerned with how much they are paying at the pump.
Readers should know that GM’s most fuel-efficient model, the Spark, will soon be put to pasture to make way for a new small crossover. GM is hoping to funnel eco-conscious shoppers into its electric vehicles, though, such as the 2022 Chevy Bolt EV and Bolt EUV. The automaker’s EV portfolio will soon grow with the introduction of other mass-market models like the 2024 Chevy Equinox EV, as well.
Appearing on CNBC on Tuesday, morning GM CEO Mary Barra said the automaker views EVs as the “ultimate solution,” to rising gas prices and energy costs.