2021 Nissan Altima Problems

2021 Nissan Altima problems owners report most

2021 Nissan Altima problems are documented in public: owners have filed 71 complaints with NHTSA, the earliest in 2021 and the most recent in 2026. Sorting those by the component the filer named puts the electrical system clearly first, at 22 of the 71 complaints, close to a third of everything filed.

A complaint is not a repair bill and not a defect finding. It is one owner telling the regulator something went wrong. What makes the count useful is the concentration: when one component takes 31 per cent of everything filed on a car, the pattern is doing more than chance.

Against the 2020 car, this model year has drawn 61 per cent fewer complaints (71 against 182). Both years are led by the electrical system, so this is a fault that carried over rather than one introduced with the 2021 car.

Of those complaints, 7 describe a crash and 1 describes a fire. Filers reported 4 injuries.

Recalls on the 2021 Nissan Altima

A recall means the manufacturer or the regulator found a safety defect, and the repair is free at a franchised dealer however old the car is. There are 2 recalls on this model year. Your own car may be covered by some, all or none of them, so check the VIN rather than the model.

In owners own words

These are complaints filed about the electrical system, quoted as written. They are one persons account rather than a diagnosis, and they are here because a symptom described by a driver is easier to recognise than a component name.

I purchased this car in April 2023 and in December 2023. I had to get a new battery when I purchased a car. They told me that there was no worries or mishaps with the vehicle they said just only normal wear and tear for is a used vehicle. My car is a 2021 Nissan Altima so the car would’ve been about two years old maybe or on his way to be in two years old when I got the car according to the Carfax and the information provided to me it only had one owner previously. I’m not sure what the person did with the car but the battery was bad fast-forward to 2025. I was hit by a F150 truck. I got T-bon

Got the car from kingdom Chevy on 66 and western on February 2024 used at 62.000. I took the car back twice because the screen in the car kept cutting off fading on and fading off. Secondly, the Bluetooth plug would not work. I did not have the car a month. They kept telling me that nothing was wrong with the vehicle. I took my vehicle to the dealer and was told that there were no recalls on the vehicle and that basically my car was one of the cars that got put in the bad batch. I was also told that the only recall on this car was the hood. No one could open the hood, even if I pull the latch

Purchased the car in June of 2024 with around 33,000 miles. I thought the doors were locked and someone was able to just open my back door when my car was unattended in a store parking lot; the car was supposed to be locked. Lights and horn started going off. Being a female with a child this is a very scary issue. The idea that anyone can get in when you think the doors are locked or vice versa, in the event of an emergency no one can get in because the doors dont unlock. It started with the passenger side rear door lock not working with fob or button. The lock needs to be done manually. The

Every component, by complaint count

The full breakdown of what owners named when they filed. Components below the top ten are grouped out of this table.

How other model years compare

The same nameplate across the years we hold. Complaint counts fall naturally for newer cars because fewer of them have been on the road for long, so read the column as a rough signal rather than a ranking. In this set the 2016 Nissan Altima has drawn the most complaints and the 2021 Nissan Altima the fewest.

What to check on the electrical system

Electrical reports cover a wide spread: screens that reboot, cameras that go black, charging that stops, and warning lights that arrive in groups. The common thread is that the fault comes and goes, which makes it hard to show a mechanic on demand.

Buying a used 2021 Altima

Sit in the car with the engine running and work through every switch, screen and camera before you talk about price. An intermittent fault that appears once during a ten minute check is likely to appear often once you own it.

If you already own one

Have the battery and charging system tested before replacing any module. A weak battery produces electrical faults that look like a dozen separate failures, and the test is free at most parts retailers.

• Test every screen, camera and switch before agreeing a price.
• Have the battery and alternator tested before replacing a module.
• Ask for stored fault codes, including the ones already cleared.
• Check whether the fault is covered by a software update.