At 5:44 on Hwy 50/Elizabeth Ave in Pueblo, CO. The automatic emergency braking system locked up with no reason for it to do so. Thankfully we were not rear ended. I have documented via photograph of this system error alert coming on several times a week while driving this vehicle. It has been to the dealership now twice for this issue and will be making yet another appt to get the car back in…
2020 Nissan Sentra brakes problems
severe 14 complaints filed with NHTSA · avg repair $450 · see brakes across all vehicles →
Complaints
14
Recalls
0
Avg fix
$450
1crash
What stands out
No new NHTSA brakes complaint has been filed on this vehicle in over 3 years — the issue may be aging out of the active population.
The failure pattern owners describe
Buyer takeaway: Multiple 2020 Sentra owners report the automatic emergency braking system falsely engaging without obstacles present, particularly in bright sun or rain, creating rear-end collision hazards; one owner also reported system failure to activate when needed. Nissan dealers are unable to resolve the issue despite multiple service visits.
The 2020 Sentra's automatic emergency braking (AEB) and front collision avoidance system has a documented pattern of false activations. Owners describe the vehicle suddenly braking hard at speeds ranging from 25 to 60 mph on both city streets and highways—with no obstacle, vehicle, or hazard in front of them. One owner documented over 10 false activations within months of purchase; another experienced repeated episodes over several weeks. The problem occurs more frequently in bright sunlight and rainy conditions.
The false braking creates a dangerous rear-end collision hazard when traffic is present behind the vehicle. Owners report taking their Sentras to Nissan dealers multiple times (up to three visits), yet mechanics cannot duplicate the fault or repair it. One dealer told an owner the issue affects most Nissan Sentras.
Separately, a brake sensor malfunction was reported twice within one week in a newly purchased vehicle, triggering warning lights and preventing the car from starting.
In one incident, the AEB system failed to activate when the driver needed it during an emergency evasive maneuver, resulting in a collision with a parked car and a total loss.
Same Nissan Sentra brakes reports on nearby years: 2018 · 2019
Failure modes owners describe
Automatic Emergency Braking (AEB) System - False Activations
The forward collision warning and automatic emergency braking system engages unexpectedly when no obstacle, vehicle, or hazard is present in front of the vehicle. This occurs across various driving conditions and speeds.
When: Multiple occurrences reported from early ownership (weeks to months after purchase) through higher mileage; incidents documented across multiple driving sessions
Symptoms owners cite: Car suddenly brakes hard with no obstacle or vehicle ahead; Multiple false activations (10+ times reported in one case); No warning before braking engages; Occurs more frequently in bright sunlight and rain/bad weather conditions; Occurs at various speeds (25 mph to 60 mph); Occurs both on city streets and highways; Can trigger sudden jerking stops creating rear-end collision hazard
Codes mentioned: System Malfunction warning light on dashboard, Front Collision Avoidance system error message
Repairs/costs cited: Dealers unable to duplicate the fault; three dealership visits reported in one case with no resolution; one owner reported dealer stated issue occurs on most Nissan Sentras; battery replacement attempted but did not resolve issue
Brake Sensor Malfunction
Brake sensor detects false conditions, causing warning messages and system errors. One owner reported the malfunction occurred twice within one week of purchase.
When: Within one week to one month of purchase (new vehicle)
Symptoms owners cite: Brake pedal engages abnormally; Yellow triangle warning appears on dashboard; Multiple dashboard warning symbols illuminate; Vehicle fails to start the following morning
Codes mentioned: Yellow triangle warning light, Multiple unidentified dashboard symbols
Repairs/costs cited: Battery replacement performed at dealership; mechanic reported no sensors were found to be active; vehicle towed to dealer
AEB System Failure - No Activation When Needed
The automatic emergency braking system failed to activate when the vehicle should have avoided a collision, allowing the vehicle to strike a parked car while the driver was attempting an evasive maneuver.
When: During emergency evasive driving situation
Symptoms owners cite: Automatic braking did not activate despite imminent collision; No warning noise from the system; No warning from the collision avoidance system
Repairs/costs cited: Vehicle deemed total loss by insurance due to damage; no repair attempted
Synthesized from 14 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
My daughter was driving her 2020 Nissan Sentra the other day and was trying to avoid hitting a dog that ran in front of her car she crashed into a park car. Our Nissan Sentra anti brakes did not stop the car nor make a noise before hitting that parked car. No warning from our car to prevent this head on collision. There is so much damage that our insurance has deemed it a total loss. By the…
Had brakes trouble with your 2020 Nissan Sentra?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the brakes problem on the 2020 Nissan Sentra?
It's a meaningful issue. 14 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $450.
At what mileage does the brakes typically fail?
Based on the 14 complaints filed, brakes issues most often appear around 40,333 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $450 for brakes repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to brakes?
No active recalls currently cover brakes issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2020/Nissan/Sentra.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.