"How reliable is the 2021 Nissan Altima?"

"Based on 96 NHTSA complaints, the 2021 Nissan Altima has a median complaint mileage of 41000 miles. The most common issue is Electrical System."

"What are common problems with the 2021 Nissan Altima?"

"The most frequently reported component in NHTSA complaints for the 2021 Nissan Altima is Electrical System, accounting for a significant portion of the 96 total complaints filed."

2021 Nissan Altima: Reliability Data

Source: NHTSA — 96 complaints

Total Complaints

41,000mi

Median Mileage

Electrical System

Top Issue

Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

17,000 25th Percentile

41,000 Median Mileage

44,794 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

Electrical System

Automatic Emergency Braking

Service Brakes

Unknown Or Other

Warnings

Steering

Suspension

Engine

Warnings

Seats

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"First of all I know there is a break in period. The stering seems to be loose at times almost to loose when Iâm turning , especially a more sharper turn. The brakes are loud at a stop almost like they are warped but it only has 300 miles.the suspension, brakes,,underneath the front end, and the s..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

When Were Complaints Filed?

Number of complaints by the year the issue occurred.

Where Are Complaints Coming From?

Top states by complaint count.

CA: 15 GA: 11 FL: 7 LA: 7 TX: 6 AZ: 4 AR: 4 MA: 4 NM: 4 IL: 3

Nissan Altima — Other Years

See how this model compares across different model years.

Year	Complaints	Median Mileage	Top Issue	Crashes
1993	150	122,000	Frontal	25
1994	120	126,000	Frontal	37
1995	216	110,500	Frontal	49
1996	117	83,075	Frontal	27
1997	141	120,000	Air Bags	40
1998	141	120,000	Frontal	20
1999	110	88,500	Frontal	29
2000	199	84,000	Engine And Engine Cooling	34
2001	201	69,500	Engine And Engine Cooling	29
2002	1321	87,000	Engine And Engine Cooling	41
2003	1099	86,300	Engine And Engine Cooling	61
2004	334	71,000	Engine And Engine Cooling	18
2005	1358	85,000	Body	71
2006	1043	90,000	Body	58
2007	597	65,000	Suspension	39
2008	1373	71,000	Structure	73
2009	2149	78,000	Steering	55
2010	538	51,603	Unknown Or Other	40
2011	317	72,000	Power Train	18
2012	575	75,000	Power Train	39
2013	2970	62,000	Air Bags	104
2014	1376	62,500	Exterior Lighting	74
2015	1188	51,000	Exterior Lighting	61
2016	778	57,692	Power Train	43
2017	498	55,000	Power Train	32
2018	314	36,000	Unknown Or Other	16
2019	326	14,000	Electrical System	40
2020	266	21,171	Electrical System	27
2022	50	-	Unknown Or Other	8
2023	33	5,300	Electrical System	8
2024	55	-	Unknown Or Other	13

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28