The loudest Sentra year in our data, and the one with the most open paperwork — buyable only if the transmission proves itself on a long test drive.

Recall 21V135 covers every 2016–2019 Sentra: 807,376 vehicles, the largest campaign touching this car. The brake-light switch can become contaminated so the circuit never closes and the brake lights simply do not illuminate when you press the pedal. Nobody behind you knows you are stopping. The remedy is free — dealers replace the switch and add a protective grommet — and Nissan's internal code for it is PM971. Owner letters went out on 1 July 2022, which means plenty of cars changed hands before the letter arrived. Run the VIN and confirm it shows completed; if it does not, book it, and in the meantime have someone stand behind the car while you press the pedal.

The 2016 carries an unusually thick airbag stack. 16V244 covers a front-passenger Occupant Classification System — the seat sensor that decides whether to arm the passenger airbag — that can read an adult as a child or read an occupied seat as empty and switch the airbag off; the fix is a free reprogram of the airbag and sensor control units. 16V242 is the related seat-belt-bracket problem: the front passenger belt bracket can deform if it is used to anchor a child seat, after which the sensor misreads the child seat and leaves the airbag armed; dealers reinforce the bracket and reprogram. 16V436 covers cars built 9 February to 4 March 2016 whose wiring-harness connector can come loose from the passenger airbag. 17V253 covers a manufacturing error inside the passenger airbag inflator itself. All four are free. This is also why the 2016 file shows airbag-tagged complaints that are really recall activity rather than a separate defect.

Recall 16V485 applies only to 2016 Sentras built between 11 and 26 April 2016. A terminal pin in the engine-room wiring harness was made too large to hold its connection to the ECU — the engine control unit — so the car may refuse to start or may stall while you are driving it. Dealers replace the pin free of charge. It is a tiny population, but a stall in traffic is the kind of defect worth spending thirty seconds on a VIN check for.

Separately from any recall, Nissan extended the emission warranty on the rear oxygen sensor for certain 2013–2016 Sentras built to 50-state emissions standards. The sensor can develop a short to ground that the car fails to detect, which can hide other fault codes and cause an emissions-test failure. Coverage runs to 20 years/200,000 miles, so on a 2016 it is still live in 2026, and it includes an annual voltage check on request plus repair or replacement of the sensor and wiring. It is not a safety recall and it will not show up on a standard VIN recall lookup — ask a Nissan dealer to check warranty-extension eligibility by VIN.

Behind the transmission, the 2016 file carries a modest run of repeat mass-airflow-sensor faults — the sensor that measures incoming air — where owners report the check-engine light returning with the same code after a cleaning: one owner paid $126 to have it cleaned and had the light back a year later, and quotes replacement at $400 to $600 with labour. One owner reports a fuel pump failing at 51,573 miles for $1,400. A mechanic teardown channel covering this generation also calls out front struts, which announce themselves with a banging noise over bumps or visible fluid on the strut body. None of these are pattern failures on the scale of the transmission, but they are what a cheap 2016 tends to need.