Flaw: The GMC Sierra AT4X drinks a lot of gas
The 2023 GMC Sierra AT4X is equipped with a 6.2-liter V8 engine that produces 420 hp and 460 lb-ft of torque as standard,
giving it enough of power to plow through mud and scale obstacles. In addition, it contributes to the Sierra's 0-60 mph time of 6.2 seconds.
We averaged around 14.8 mpg when driving on the highway and in town. While off-roading, the average MPG dropped to 11.6.
However, the EPA estimates just 14 mpg in the city and 17 mpg on the highway.
for instance, has a combined mpg rating of 52. If you're in the market for a fuel-efficient, versatile sedan, the Toyota model is a great option.