NHTSA FEDERAL EVIDENCE AUDITAudited: 2026-08-24

2021 Honda Accord Common Problems & Defect Telemetry

Authoritative defect intelligence synthesized from 221 verified NHTSA owner complaints, 4 federal safety recalls, and interquartile failure mileage telemetry.

Data Grade: HIGH21 Odometer Verified EntriesMethodology
Executive AI Defect Summary

The 2021 Honda Accord receives a 5.7/10 MazicBay Reliability Index based on 221 verified NHTSA federal complaints and 4 safety recalls. The primary reported failure mode is Electrical Parasitic Drain, Infotainment & Harness Reports with a median failure point at 38,000 miles (IQR: 34,00042,000 mi). Out-of-warranty repairs benchmark at $280 – $850 .

Honda Accord PlatformHonda Accord Series
DLC Port: Lower dashboard above accelerator pedal

*Representative vehicle platform imagery. Body styling varies across generations.

MazicBay Reliability Index
5.7 / 10

11.6 complaints / 10k sold

NHTSA Owner Complaints
221

Verified US federal records

Safety Severity Grade
Critical Risk

Crash, fire & stall audit

Federal Safety Recalls
4

4 Active / Free Remedies

Switch Accord Model Year (2014–2025)
Defect Clustering

Top Reported Problem Clusters (7)

Ranked by NHTSA Complaint Frequency
#1 ELECTRICAL SYSTEM & BATTERYCritical Severity83% Match Confidence

Electrical Parasitic Drain, Infotainment & Harness Reports

81
Federal Complaints
Failure Mileage (Median):38,000 milesIQR: 34,00042,000 mi
Estimated Repair Cost:$280 – $850 MazicBay Repair Intelligence Model
Recall Status:Under Investigation / Recall AuditNHTSA Campaign Audit
Reported Defect Symptoms
  • Unexplained battery drain after sitting overnight
  • Infotainment display / instrument cluster blackouts
  • Accessory malfunction / alternator fault warnings
Potentially Associated OBD-II Codes

Correlated via MazicBay Diagnostic Engine (not NHTSA verified fact).

Sample Verified NHTSA Evidence Records (3)
ODI #11757660 • Filed: 08/18/2026

Infotainment system recieving phantom / ghost touches. Screen selects menu items on its own, plays, pauses music, causes major distraction and disruption. Screen flashes when changing menus and can pull attention from the road. Safety issue!

ODI #11757836 • Filed: 08/18/2026

My car currently has displayed all lights on panel. Went to auto zone to have codes read, shows powertrain-description is code PO299 suggests turbocharger assembly. Safety is put at risk because all of the safety features are now disabled.

ODI #11752534 • Filed: 07/23/2026

My center screen has a ghost touch; I have brought it to my dealer since the day I bought it I have been having screen and CarPlay issues. never fixed always told its fake phone cable, even though my phone can be disconnected and the screen still goes crazy, either way I left ...

#2 BRAKING SYSTEM & ABSCritical Severity74% Match Confidence

Service Brakes, ABS Actuator & Master Cylinder Reports

70
Federal Complaints
Failure Mileage (Median):21,900 milesIQR: 10,00040,000 mi
Estimated Repair Cost:$350 – $1,100 MazicBay Repair Intelligence Model
Recall Status:Under Investigation / Recall AuditNHTSA Campaign Audit
Reported Defect Symptoms
  • Spongy or hard brake pedal travel
  • ABS / Brake warning light illuminated
  • Extended stopping distance / pedal vibration
Potentially Associated OBD-II Codes

Correlated via MazicBay Diagnostic Engine (not NHTSA verified fact).

Sample Verified NHTSA Evidence Records (3)
ODI #11757180 • Filed: 08/15/2026Odometer: 40,000 mi

40,000 miles and 5 years after original in service date - failure of 2021 ACCORD 1.5T headgasket system between cylinder s #1-2. Required full head disassembly, removal, rebuild of head, and replacement of head gasket and associated components. $6000 quote from Honda Corporate...

ODI #11748937 • Filed: 07/07/2026

Had to repleace the electrical parking brake sensor. Now all my lights on the dash board are lighted up and have to go get a diagnostic test done

ODI #11748319 • Filed: 07/04/2026

On July 4th 2026, I was leaving from a restaurant that evening and within 5-10 seconds of me turning my car on, all of the lights on my dashboard turned on. I was slightly confused because there were multiple at once and my car was rumbling a bit from under the engine hood. Wi...

#3 ENGINE & COOLINGCritical Severity83% Match Confidence

Engine Stalling, Oil Consumption & Cooling Defect Reports

47
Federal Complaints
Failure Mileage (Median):78,000 milesIQR: 40,00086,000 mi
Estimated Repair Cost:$950 – $3,200 MazicBay Repair Intelligence Model
Recall Status:Under Investigation / Recall AuditNHTSA Campaign Audit
Reported Defect Symptoms
  • Engine sudden stall / hesitation while driving
  • Abnormal oil burning / consumption
  • Check Engine Light (MIL) flashing
  • Engine overheating / coolant loss
Potentially Associated OBD-II Codes

Correlated via MazicBay Diagnostic Engine (not NHTSA verified fact).

Sample Verified NHTSA Evidence Records (3)
ODI #11757836 • Filed: 08/18/2026

My car currently has displayed all lights on panel. Went to auto zone to have codes read, shows powertrain-description is code PO299 suggests turbocharger assembly. Safety is put at risk because all of the safety features are now disabled.

ODI #11757180 • Filed: 08/15/2026Odometer: 40,000 mi

40,000 miles and 5 years after original in service date - failure of 2021 ACCORD 1.5T headgasket system between cylinder s #1-2. Required full head disassembly, removal, rebuild of head, and replacement of head gasket and associated components. $6000 quote from Honda Corporate...

ODI #11752456 • Filed: 07/23/2026

I own a 2021 Honda Accord Hybrid. Shortly after purchasing the vehicle as a used vehicle in 2023, I began experiencing intermittent air conditioning performance. The A/C would gradually lose cooling capacity over time until it was no longer able to cool the cabin effectively. ...

#4 AIRBAGS & SAFETY RESTRAINTSCritical Severity78% Match Confidence

Airbag Occupant Detection & Inflator Defect Reports

23
Federal Complaints
Failure Mileage (Median):30,000 milesIQR: 30,00030,000 mi
Estimated Repair Cost:$400 – $1,200 MazicBay Repair Intelligence Model
Recall Status:Under Investigation / Recall AuditNHTSA Campaign Audit
Reported Defect Symptoms
  • SRS Airbag warning lamp illuminated
  • Passenger occupant classification sensor failure
  • Seat belt retractor lockup
Potentially Associated OBD-II Codes

Correlated via MazicBay Diagnostic Engine (not NHTSA verified fact).

Sample Verified NHTSA Evidence Records (3)
ODI #11741089 • Filed: 05/31/2026

I have 2 issues and not sure if they are related 1.SRS system light came on and says see dealership. This one happened about 2 weeks ago. 2. While driving today all the lights on my dash came on including the check engine and all warning notices were going off. I was driving w...

ODI #11736561 • Filed: 05/08/2026

I bought my vehicle around May 2024. Initially, everything seemed fine. However, I noticed that my car was starting to slow down and would enter limp mode, preventing me from exceeding a certain mileage. Subsequently, all the lights on my dashboard began flashing, prompting me...

ODI #11665139 • Filed: 06/05/2025

The contact owns a 2021 Honda Accord. The contact stated that while driving at 60 MPH, the vehicle's auto braking applied without warning. The vehicle was rear-ended by a possible 2024/2025 Buick Envista. The driver of the Buick left the scene of the crash. The brake warning l...

#5 STEERING & SUSPENSIONCritical Severity70% Match Confidence

Electric Power Steering Assist & Suspension Noise Reports

22
Federal Complaints
Failure Mileage (Median):68,671 milesIQR: 68,67168,671 mi
Estimated Repair Cost:$450 – $1,400 MazicBay Repair Intelligence Model
Recall Status:Under Investigation / Recall AuditNHTSA Campaign Audit
Reported Defect Symptoms
  • Sudden loss of electric power steering assist
  • Steering wheel pull or highway wander
  • Clunking / knocking noise over bumps
Potentially Associated OBD-II Codes

Correlated via MazicBay Diagnostic Engine (not NHTSA verified fact).

Sample Verified NHTSA Evidence Records (3)
ODI #11731289 • Filed: 04/15/2026

The lights and warnings below popped up on my dash after the engine light had come on and then off again for about a week. See below, -Emission system problem Avoid heavy acceleration and high speed. See dealer -tpms light -brake system problem -brake hold system problem -elec...

ODI #11722767 • Filed: 03/08/2026

This has been reported one time before but the situation has gotten worse when driving at approximately 60ish miles per hour but it starts doing it about between 50 and 70 mph when driving and the car is using the regular engine not the EV section. You will randomly lose the a...

ODI #11720988 • Filed: 02/27/2026

This Honda Accord Sport SE has had electrical problems from the day I received the vehicle. Every time I went for an oil change at Bommarito Honda I mentioned it to them and they said “yeah the new Hondas do tend to hand a lot of those electrical problems” so with this the pro...

#6 TRANSMISSION & DRIVETRAINCritical Severity79% Match Confidence

Transmission Hesitation, Hard Shifting & Slipping Reports

18
Federal Complaints
Failure Mileage (Median):81,000 milesIQR: 81,00081,000 mi
Estimated Repair Cost:$1,400 – $3,800 MazicBay Repair Intelligence Model
Recall Status:Under Investigation / Recall AuditNHTSA Campaign Audit
Reported Defect Symptoms
  • Hard gear shifts / delayed engagement into Drive/Reverse
  • Transmission shudder / jerking under acceleration
  • Transmission slipping between gears
Potentially Associated OBD-II Codes

Correlated via MazicBay Diagnostic Engine (not NHTSA verified fact).

Sample Verified NHTSA Evidence Records (3)
ODI #11757836 • Filed: 08/18/2026

My car currently has displayed all lights on panel. Went to auto zone to have codes read, shows powertrain-description is code PO299 suggests turbocharger assembly. Safety is put at risk because all of the safety features are now disabled.

ODI #11737225 • Filed: 05/12/2026

The contact owns a 2021 Honda Accord. The contact stated that while driving at various speeds, the brakes would suddenly apply, stopping the vehicle immediately. The failure had become more persistent. The contact would immediately apply the accelerator, and the vehicle would ...

ODI #11736561 • Filed: 05/08/2026

I bought my vehicle around May 2024. Initially, everything seemed fine. However, I noticed that my car was starting to slow down and would enter limp mode, preventing me from exceeding a certain mileage. Subsequently, all the lights on my dashboard began flashing, prompting me...

#7 FUEL SYSTEM & INJECTIONMedium Severity65% Match Confidence

Fuel Pump Pressure Loss & Fuel Delivery Defect Reports

13
Federal Complaints
Failure Mileage (Median):20,000 milesIQR: 12,50027,500 mi
Estimated Repair Cost:$650 – $1,250 MazicBay Repair Intelligence Model
Recall Status:Out-of-Pocket / TSB RemedyNHTSA Campaign Audit
Reported Defect Symptoms
  • Sudden loss of propulsion power at highway speeds
  • Extended engine cranking / failure to restart
  • Fuel odor near fuel tank / engine bay
Potentially Associated OBD-II Codes

Correlated via MazicBay Diagnostic Engine (not NHTSA verified fact).

Sample Verified NHTSA Evidence Records (3)
ODI #11752286 • Filed: 07/23/2026

My car stalled stopped and takes a While to turn on , all lights turned on .. coded came back and showed it was fuel pressure regulator / fuel pump. I believe it is part of the recalls put in place for other Honda accord lx as well since I’m having same problem

ODI #11749412 • Filed: 07/09/2026

I am submitting this complaint regarding my 2021 Honda Accord because of a serious safety issue involving the turbocharger and fuel injector system. While driving on the highway, my vehicle experienced a failure related to the turbocharger and fuel injector system, which cause...

ODI #11742980 • Filed: 06/09/2026

I have been experiencing what’s being called “ghost touches” on google. This is a known issue that needs to be addressed. Also VIN number starting with 1HGCV need to be added to the fuel pump recall list. I’ve had to change both systems.

Safety Enforcement

Official NHTSA Safety Recalls (4)

100% Free Dealer Repair
NHTSA Campaign #21V900000Reported: 18/11/2021

SEAT BELTS:REAR/OTHER:RETRACTOR

Summary: Honda (American Honda Motor Co.) is recalling certain 2021 Accord Sedan, Accord Hybrid, CR-V, Ridgeline, 2022 Insight and CR-V Hybrid vehicles. The automatic locking retractor on the second-row center seat belt assembly may deactivate improperly, which can result in an unsecured child restraint system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."

Safety Consequence: An unsecured child restraint system can increase the risk of injury during a crash.
Manufacturer Remedy: Dealers will replace the second-row center seat belt assembly, free of charge. Owner notification letters were mailed January 14, 2022. Owners may contact Honda customer service at 1-888-234-2138.
NHTSA Campaign #24V064000Reported: 01/02/2024

AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER

Summary: Honda (American Honda Motor Co.) is recalling certain 2020-2022 Pilot, Accord, Civic sedan, HR-V, Odyssey, 2020 Civic coupe, Fit, 2021-2022 Civic hatchback, 2021 Civic Type R, Insight, 2020-2021 CR-V, CR-V Hybrid, Passport, Ridgeline, Accord Hybrid, 2020 Acura MDX, 2022 Acura MDX, 2020-2022 Acura RDX, and 2020-2021 Acura TLX vehicles. The front passenger seat weight sensor may crack and short circuit, failing to suppress the air bag as intended.

Safety Consequence: An air bag that deploys unintentionally during a crash can increase the risk of injury.
Manufacturer Remedy: Dealers will replace the seat weight sensors, free of charge. Owner notification letters were mailed March 28, 2024. This is a phased recall. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for these recalls are XHP and VHQ.
NHTSA Campaign #23V858000Reported: 18/12/2023

FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Summary: Honda (American Honda Motor Co.) is recalling certain 2013-2023 Honda Accord, Civic Coupe, Civic Sedan, Civic Hatchback, Civic Type R, CR-V, HR-V, Ridgeline, Odyssey, Acura ILX, MDX, MDX Hybrid, RDX, RLX, TLX, 2019-2022 Honda Insight, Passport, 2020 Honda CR-V Hybrid, 2018-2019 Honda Clarity PHEV, Fit, and 2015-2020 Honda Accord Hybrid, Pilot, Acura NSX vehicles. The fuel pump inside the fuel tank may fail.

Safety Consequence: Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.
Manufacturer Remedy: Dealers will replace the fuel pump module, free of charge. Owner letters were mailed September 6, 2024. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are KGC and KGD. This recall is an expansion of NHTSA recall numbers 21V-215 and 20V-314.
NHTSA Campaign #26V332000Reported: 21/05/2026

AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER

Summary: Honda (American Honda Motor Co.) is recalling certain 2018-2021, 2023 Acura TLX, 2019-2024 RDX, 2017-2020, 2022-2026 MDX, 2017-2021, 2023, 2025 Honda Ridgeline, 2017-2022 Pilot, 2019-2021 Passport, 2018-2026 Odyssey, 2019-2022 Insight, 2019-2021 HR-V, 2018-2020 Fit, 2020-2022 CR-V Hybrid, 2017-2022 CR-V, 2017-2018, 2021 Civic Type R, 2017-2021 Civic hatchback, 2016-2020 Civic coupe, 2016-2022 Civic, 2017-2022 Accord Hybrid, and 2016-2022 Accord vehicles. The front passenger seat weight sensor may crack and short circuit, which can cause the air bags to deploy unintentionally during a crash.

Safety Consequence: Air bags that deploy unintentionally during a crash increase the risk of injury.
Manufacturer Remedy: Dealers will replace the seat weight sensors, free of charge. Owner notification letters were mailed July 7, 2026. Owners may contact Honda's customer service at 1-888-234-2138. Honda's numbers for this recall are BOL, WO9, OOA, WOM, XOH, NOC, POD, BOE, UOF, POB, EOG, AOI, QO8, TOJ, DO7, and SOK. This recall expands previous NHTSA recall number 24V064. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning May 29, 2026.

Pre-Purchase Inspection Checklist for 2021 Honda Accord

Before purchasing a used 2021 Honda Accord, perform the following targeted inspections based on reported federal defect patterns:

1. Cold Start & Idle Diagnostics

Scan the OBD-II port under the dash for pending freeze-frame codes (e.g. P0300 misfires, P0087 fuel rail pressure, P0420 catalytic efficiency).

2. Transmission Shift Quality Audit

Test vehicle at low-speed stop-and-go and highway merges. Check for delayed reverse engagement or gear shift shudder between 2nd and 3rd gears.

3. Federal Recall Completion Check

Verify that all 4 NHTSA safety recall campaigns have been performed by an authorized dealership using the VIN.

4. Electrical & Infotainment Drain Check

Ensure the instrument cluster, center screen, and auxiliary charging ports operate with stable 12.0V–14.4V alternator voltage.

Frequently Answered Questions

Defect & Reliability Q&A: 2021 Honda Accord

Is the 2021 Honda Accord a reliable used car?

The 2021 Honda Accord earns a 5.7/10 MazicBay Reliability Index based on 221 federal owner reports. Vehicles maintained under factory service schedules exhibit strong longevity past 150,000 miles.

What is the most frequent defect reported on the 2021 Honda Accord?

The leading complaint category is Electrical Parasitic Drain, Infotainment & Harness Reports, with a median failure point around 38,000 miles (IQR: 34,00042,000 mi).

Are there free recall repairs available for the 2021 Honda Accord?

Yes, the NHTSA records 4 safety recall campaign(s) for this model year. All safety recalls are performed 100% free of charge by authorized franchise dealerships regardless of vehicle warranty status.