2020 Honda Civic Si problems and complaints
Owners have filed 227 complaints with NHTSA about the 2020 Honda Civic Si. The most-reported areas: Electrical System (36), Unknown Or Other (36), Power Train (32).
Key takeaways
- 227 owner complaints on file with NHTSA.
- 15 involve a crash, 1 a fire, 12 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Electrical System | 36 | 16% |
| Unknown Or Other | 36 | 16% |
| Power Train | 32 | 14% |
| Air Bags | 31 | 14% |
| Steering | 28 | 12% |
| Forward Collision Avoidance | 24 | 11% |
| Fuel/Propulsion System | 24 | 11% |
| Service Brakes | 15 | 7% |
| Engine | 12 | 5% |
| Visibility | 7 | 3% |
| Wheels | 7 | 3% |
| Fuel System | 7 | 3% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2020 Honda CIVIC Si 4 DR FWD | 5/5 | 5/5 | 5/5 | 5/5 |
| 2020 Honda CIVIC Si 2 DR FWD | 5/5 | 4/5 | 5/5 | 5/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Equipment - filed 2026-09-10
I am writing to file a complaint regarding the air conditioning system failure in my 2020 Honda Civic Sport. The air conditioner in my vehicle began blowing hot air instead of cold air starting in January 2024. I took the vehicle to a mechanic for inspection, I was informed that the evaporator has failed and needs to b...
Electrical System - filed 2026-09-04
Odometer Fraud. The contact purchased a 2020 Honda Civic. It was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase, the mileage was 87,000. At the time of registration, it was discovered that the mileage was 247,000.
Electrical System,engine - filed 2026-08-30
The turbocharger bypass control solenoid valve circuit on my 2020 Civic Si has developed an intermittent open, setting DTC P0035. I diagnosed it myself: the solenoid coil measures 45 ohms and functions when commanded via bi-directional scan tool, and supply voltage is present at the harness connector. However, the cont...
Diagnose it yourself
As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
More for the 2020 Honda Civic Si
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.