The Sierra and similar Chevrolet Silverado have relatively responsive handling and a spacious, quiet cabin. Benefits include easy cabin access, intuitive controls, and generous towing and payload capacities. Fuel economy with the 5.3-liter V8 crew cab we tested was 16 mpg overall, but the truck feels a bit sluggish in everyday driving. Other engines are a 4.3-liter V6 and powerful 6.2-liter V8. Its few shortcomings include a jittery ride and front seats that aren't as supportive as those in certain competitors. Lane-keeping assist is offered, and Android Auto and Apple CarPlay are available. Reliability has been below average.