Honda turbocharged engines have been the subject of class action lawsuits alleging coolant leakage into cylinders, overheating, misfires, premature wear, and timing chain/fuel system concerns. These defects can cause stalling, sudden power loss, and long-term engine damage.
Multiple class actions filed in federal court claim Honda failed to disclose these defects. Plaintiffs allege safety risks from stalls and loss of power, with affected models including Accord, Civic, CR‑V, and Acura RDX/TLX.
| Year(s) | Make | Model | Should Purchase? | Reason | Notes | |
|---|---|---|---|---|---|---|
| 2018 2019 2020 2021 2022 | Honda | Accord | Not Suggested | Coolant leaks causing overheating and misfires |
Engine: 1.5L Turbo I4 – L15B7 Alleged design flaw leads to premature wear Named in class action filings (California federal court, 2024) |
|
| 2018 2019 2020 2021 2022 | Honda | Accord (Sport/2.0T) | Not Suggested | Overheating and timing chain concerns |
Engine: 2.0L Turbo I4 – K20C4 Complaints of coolant leakage and misfires Included in engine defect class actions |
|
| 2016 2017 2018 2019 2020 2021 2022 | Honda | Civic | Not Suggested | Coolant leak and premature wear |
Engine: 1.5L Turbo I4 – L15B7 Reports of overheating and stalling Named in multiple defect lawsuits |
|
| 2017 2018 2019 2020 2021 2022 | Honda | CR-V | Not Suggested | Fuel contamination and overheating |
Engine: 1.5L Turbo I4 – L15B7 Known for oil dilution and coolant leakage Covered in federal class action complaints |
|
| 2021 2022 | Acura | RDX | Not Suggested | Engine overheating and head gasket failure |
Engine: 2.0L Turbo I4 – K20C4 Alleged coolant leakage defect Included in Honda/Acura class action filings |
|
| 2019 2020 2021 2022 | Acura | TLX | Not Suggested | Premature wear and misfires |
Engine: 2.0L Turbo I4 – K20C4 Complaints of overheating and stalling Covered in federal class action complaints |
Honda’s turbocharged 1.5L (L15B7) and 2.0L (K20C4) engines in Accord, Civic, CR‑V, and Acura RDX/TLX models (2016–2022) have been alleged to suffer from coolant leakage, overheating, misfires, and premature wear. Class actions filed in federal court claim Honda failed to disclose these defects, posing safety risks from stalls and sudden power loss. These vehicles are generally not suggested for long-term ownership.