2021 Honda Accord Engine Problems

NHTSA component category: ENGINE · data through 07/14/2026

29Engine complaints

13.6%Of all 214 complaints

#4Most-reported category

Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.

How engine ranks on this vehicle

ELECTRICAL SYSTEM51 · 23.8%

Unspecified / other50 · 23.4%

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING46 · 21.5%

ENGINE29 · 13.6%

SERVICE BRAKES25 · 11.7%

Share of the 214 complaints citing each category; one complaint can cite several. Full breakdown on the 2021 Honda Accord overview page.

What owners report

“Head gasket blown before 50k miles even at 30k miles ive seen it happen to my friend!”NHTSA complaint 11634205 — filed 01/05/2025

“NOTE: the item / malfunction described below is CURRENTLY UNDER RECALL for multiple Honda models but has not YET been recalled for the 2021 Accord…”NHTSA complaint 11625538 — filed 11/15/2024

“Brakes failed and steering took over the car uncontrollably and went in all different directions hitting whatever it came across and ending up stopping after…”NHTSA complaint 11539109 — filed 08/17/2023

Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.

Engine complaints by year filed

Frequently asked questions

Does the 2021 Honda Accord have engine problems?

Engine is the #4 most-reported problem area on the 2021 Honda Accord: 29 of 214 complaints on file (13.6%). Complaints are unverified owner reports, not confirmed defects.

How many complaints does the 2021 Honda Accord have in total?

214 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 14 involved a crash, 1 involved a fire, 8 reported injuries, and none reported deaths.

What does NHTSA's engine category include?

NHTSA assigns each complaint to standard component categories; this page reports the ENGINE category exactly as NHTSA defines and records it.

About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/14/2026.