2021 Nissan Frontier

For the 2021 Nissan Frontier, powertrain complaints make up the largest share of what owners report, followed by airbag and electrical concerns. On the powertrain side, owners describe transmission control module faults triggering warning lights, and some report difficulty getting parts to complete repairs. A handful of owners also mention starting failures, where pressing the push-to-start button produces abnormal sounds from the engine compartment and the truck won't turn over. Airbag complaints center on the passenger airbag indicator behaving erratically, blinking, staying on, or going off unexpectedly, leaving owners uncertain whether the airbag would deploy in a crash. Electrical complaints overlap somewhat with the warning-light reports, with multiple warning lights illuminating simultaneously during normal driving. With only 17 total complaints across all systems, the overall volume is low for this model year.