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2021 Nissan Sentra

The Verdict

69 Solid Pick

The 2021 Nissan Sentra has 125 owner complaints filed with NHTSA. The most reported issues are body (58 complaints) and electrical (33 complaints). With a Klunk Score of 69/100, it earns a "Solid Pick" rating. If you're shopping for a Nissan Sentra, consider the 2023 model year which has 85% fewer complaints.

Safe Bet

The 2023 has 85% fewer complaints

View the 2023 Nissan Sentra dashboard →

69

Klunk Score: Solid Pick

Fewer complaints than most vehicles. Generally dependable, but check the top problems below.

How is this calculated?

The Klunk Score ranks this vehicle year against all others in our database based on total owner complaints filed with NHTSA. 100 = fewest complaints (top tier), 0 = most complained-about. Scores above 60 are better than average; below 40 means more problems than most.

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Under the Hood

Each number is a complaint. Darker = bigger problem.

YearBodyBrakesElectricalEngineTransmission
200047734817
20016121451117
200262107816914
2003163371176
2004188521136
20051912251104
200624435467
20075317403014
20084818533117
200916101892
2010271604412
20113613393815
2012475264755
2013668595117275
201453306375159
201561134977147
201643184658101
20174915485363
20184735342542
20195134662444
2020124243897
202158233374
20224342184
202372531
2024134644
2025172240

By Category

Body
58
Electrical
33
Brakes
23
Engine
7
Transmission
4

By Severity

1
65
2
45
3
1
4
14

Worst Problems

Compare Against

See how the 2021 Nissan Sentra stacks up against rivals.

Complaints

Body 1

Alternator needed replacement Front windshield needed replacement Unfortunately this kicked off the malfunction warning. All Nissan can say is it’s the ADAS 2 controller. They are unable to determine part numbers. However the alternator and windshield replacement kicked off the malfunction warning.

1mo ago
Body 1

Several issues since purchasing vehicle. The front collision sensor malfunction. Came to an abrupt stop several times while on the freeway due to failed sensor. Narrowly avoided major collisions. Also, have had to replace batter every year along with brakes and tires. My suspension is awful. The brakes are crap and have consistently had to address worn tires in one side. Electric panel shit off and key fob malfunctions. So many issues and so much unnecessary repairs with no real results

1mo ago
Body 2

Hello, I am reporting a steering-related issue involving the inner tie rods on my 2021 Nissan Sentra. Nissan previously issued safety recall campaign PM985 for bent inner tie rods on certain Sentra vehicles from the same model year. Two separate repair facilities inspected my vehicle and confirmed problems involving the inner tie rods and steering system components. No warning lamps or dashboard messages appeared prior to the issue being identified. Although my VIN may not currently be included in the recall population, my vehicle is experiencing a similar issue involving the same steering-related component identified in recall PM985. Because tie rods are directly related to steering control and vehicle stability, this issue raises concerns about driving safety. I am submitting this complaint so the issue can be documented and reviewed in case similar failures are occurring outside the current recall population.

1mo ago
Body 1

The door swung open while in drive, once was able to pull over and close it never opened back up due to a faulty door actuator. This was the third time the door had been “fixed”.

2mo ago
Brakes 2

The contact owns a 2021 Nissan Sentra. The contact stated that while driving approximately 15 MPH, the parking braking independently activated. The failure occurred a second time, and the parking brake unintendedly activated. There was no warning light illuminated. On the third occasion, while driving approximately 45 MPH, the parking brake activated unintendedly, causing the vehicle to stop abruptly, nearly causing a crash with another vehicle. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 13,414.

2mo ago
Electrical 1

The infotainment/radio system in my 2021 Nissan Sentra intermittently reboots and produces static. When this happens, the backup camera freezes or shuts off completely. This has occurred while I was actively reversing, causing a sudden loss of rear visibility. The screen either goes black or restarts, making the backup camera unavailable. This is a safety concern because the backup camera is required for safe reversing, and the failure happens without warning. The issue occurs repeatedly and is not driver-related. The problem appears to be related to the head unit malfunctioning, which disables the backup camera system.

2mo ago
Body 2

Some time while driving on empty roads Fuel Economy warning light beeping and automatically emergency brake . It happened on me more than 5 times.

4mo ago
Electrical 1

The passenger front, and both back windows no longer function. This appears to be a common issue when searching the internet. There is also an issue with the keyless start, as it often does not recognize that the fob is in the vehicle, or gives a low batter warning (with a new battery). As there was already a recall on the sensor for the blind spot warnings and such, there appears to be wide spread electrical and sensor issues with this year/make/model. The windows pose a safety risk if someone is trapped in a vehicle that the doors won't open.

4mo ago
Brakes 1

AEB system is initiating emergency braking at random times. Both on surface street, and the freeway on ramp. With and without weather, and without any obstacles or cars in the way. The vehicle comes it a complete stop when this happens and puts the driver in significant danger. At this point the dealer observed warning code on the dashboard, but it did not engage. Message relating to that the AEB may deploy. When it does happen Emergency Brake is on the dashboard. After it happens vehicle can resume driving. Various indicines happened last year. We took it to Ken Garff Nissan (11155 So. Jordan Gateway in South Jordan, Ut. 84095. They could not find the problem or get the problem reproduced. They recommended turning off the safety features when driving. We have done that for a year. Then on 1-15-26, the safety system was on and the break engaged and brought the car to a stop on the freeway on ramp. The car is now at Ken Garff Nissan (777 So. West Temple SLC, Utah) It has been there for 2 weeks. This is the dealer that saw the code, but the system did not engage.

5mo ago
Engine 2

Rattling noise coming from the belt assembly. Tensioner pulley is shaky and alternator had a piece brake off causing metal shavings to fly around.

6mo ago
Electrical 1

Purchased brand new with 0 miles. The system malfunction popped up and engine would not turn over after running perfectly fine a hour prior.Had to get towed to dealership and found a faulty battery luckily I still had 100 or so miles left on my warranty.Happened again last month the same exact thing except this time I had to get a jump off after several minutes the engine finally turned over.

7mo ago
Electrical 2

I got in the car to start it and it would not start. This happened at the car wash one morning. It didn’t give me any warnings of a bad battery and the only way I started it was to have someone jump it. This has happened 4 times now. It takes several minutes for the battery to charge to start the car. I have been stranded 2 times and could not get to work on time 2 times.

8mo ago
Engine 1

While driving down the highway along with other traffic the car went into limp mode and lost power instantly almost causing an accident. Come to find out the engine bearings caused the engine to go on it without any warning signs. This car has been maintenanced and taken care of and had the same issue happen that the other nissans have had that they have the recall out for.

8mo ago
Body 1

Electric steering rack has play and causes violent shaking. Huge safety risk as this could have complete failure and cause accidents. Vehicle started showing symptoms at 68,000 miles and after reading separate forums, many others have experienced these same issues. No warning lights appear on the dash and no inspection by safety highway patrol. This is a serious issue especially given I do not appear to be the only person experiencing this. The steering and suspension seem to be a common issue on this call given the recall on the tie rods.

8mo ago
Electrical 1

purchased my 2021 Nissan Sentra brand new with no prior owner. Around 2023, the air conditioning system stopped working. The AC will not turn on at all the switch or control that activates the system is completely unresponsive. I brought the vehicle to a Nissan dealership, where I was quoted $300 just for a diagnostic test, with no warranty coverage or acknowledgment of a known issue. This failure appears to be linked to a potential electrical fault or defective AC component. It compromises both comfort and safety, especially in extreme temperatures. Numerous complaints online suggest this is a recurring issue among Sentra owners, yet Nissan has not issued a recall for the AC system. I am submitting this report to request an investigation into a possible manufacturing defect and to advocate for a formal recall.

8mo ago
Body 1

The check engine light comes on with a malfunction symbol. The car has delay acceleration, jerks, hard shifts.

9mo ago
Brakes 1

Since having my Nissan 2021 Sentra I have for one, had to replace the battery in it twice. On a more serious note, it is now stopping the car at random and unnecessary times stating an object is in front of me. It happens once a while ago and I did not have any other signs, and it was just for a second, so I tried not to stress about it. Now it is happening more often and just this morning happened three times. Causing my car to come to a complete stop, it is very dangerous and I am not sure what I am to do about it.

9mo ago
Electrical 2

Passenger side power windows and driver side rear window on occasion will stop working.

9mo ago
Electrical 1

I and many others have noticed that the 2020+ Nissan Sentra has a very common issue with its window switch where the driver side window works, but all passenger windows get stuck refusing to roll up or down, or do so very slowly. I have had people try to come up to my window where I could not properly shut it, I have had to leave my window partially open over night, and in the rain.

9mo ago
Electrical 1

The rear door locks on my vehicle fail to lock and unlock properly, especially using the power lock switches or key fob. This is not an occasional issue — it happens every single day. This is a major safety concern because the back doors often cannot be opened at all, which puts my children at risk of being trapped inside during an emergency or accident. In addition, the rear windows frequently get stuck and will not roll down. This is also a daily occurrence. It makes the problem even more dangerous because the windows cannot be used as an emergency exit if the doors fail. These issues are consistent and ongoing. Because the vehicle is used to transport children, the defective door locks and windows create a significant safety hazard that could prevent occupants from exiting the car quickly in an accident, fire, or similar emergency.

9mo ago

125 total

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