Home · 2021 Honda Civic Si · Complaints
These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.
5 of 134 complaints match · Engine · clear filters
High pressure fuel pump issue diagnosed by mechanic. The models prior to mine up to and some 2021 vehicles were included in the recall but my VIN is not considered within the recall. My vehicle is a very early 2021 bought in 202 that likely has the same fuel filter as 2020sz
NHTSA ODI 11743031
While driving the car began to smoke from under hood and engine stopped. Interior and under hood flooded with smoke and fire under hood. This was a major fire, fire company put it out. No repairs were made or needed on car since purchase October 2024.
NHTSA ODI 11733110
The 2021 Honda Civic experienced an emission system failure at 70,000 MPH and detected fault code p0340, possibly an injector failure
NHTSA ODI 11589806
I was notified of a Safety Recall by American Honda regarding the fuel pump module. I contacted to dealership and they are stating they will not have a remedy within a reasonable time period (60 days), rather they will have the parts available for a remedy in the fall of 2024, which is over six months away. Per the recall information provided on this website, they are supposed to have a way to fix this issue within 60 days from the date I contact them, but they won't even offer an inspection to see if the defect exists on my car.
NHTSA ODI 11572422
Three issues I been having every since I got my car. 1. Car navigation displays not working properly, screen completely freezes or black-out. 2. Brake warning sign appears randomly in dashboard even if theres no vehicle in front, probably an issue with the car detection sensor camera . 3 Probably the most important. The car shuts down. Oil light and battery light shows in dashboard when this happens, usually when the vehicle is coming to a stop. This is an outgoing issue that is really concerning. I have take the car multiple times to the dealer and the have failed to solve any of this issues, the previously told me it was the turbo but never replace it, then i was told it was the electronic wastegate nothing was done then, now two days ago April 21, 2022 this happen again, haven't take the car to the dealer because I know they aren't going to do anything about it.
NHTSA ODI 11461876
Working with the data? Download all 134 complaints as CSV · fetched from NHTSA July 19, 2026