Full-size sedan — what actually breaks
2015–2025 · 35 models · 9 engines · 2,184 federal complaints
Every figure below is computed from federal complaint records decoded to the exact engine, aggregated across the whole segment. Where this segment differs from the all-vehicle average, it says so — where it doesn't, no claim is made.
What complaints in this segment are about
Share of component mentions across all full-size sedans in the database, with the all-vehicle average below it for comparison.
How often those complaints involve a fire, crash or injury
Share of this segment's complaints. The vertical mark is the all-vehicle average — these shares can be compared because sales volume cancels out of a within-group ratio.
all vehicles — Fire 1.1% · Crash 4.4% · Injury 2.6%
The engines with the biggest complaint records
Largest complaint samples in the segment — not a worst-list: complaint totals track sales volume, not failure rate. Each links to the full engine-level breakdown.
The recalls that matter in this segment
Recalls where NHTSA told owners to stop driving or park outside. Model-level, manufacturer-confirmed. Recall repairs are always free, whatever the car's age.
- Lucid Air — Electrical System › Software (park outside, 2022–2025) 26V540000
- Genesis G90 — Electrical System › Starter Assembly › Solenoid (park outside, 2017–2019) 24V107000
- Hyundai Genesis — Electrical System › Starter Assembly › Solenoid (park outside, 2015–2016) 24V107000
- Kia Cadenza — Service Brakes, Hydraulic › Antilock/Traction Control/Electronic Limited Slip › Control Unit/Module (park outside, 2015–2016) 23V652000
- Kia K900 — Service Brakes, Hydraulic › Antilock/Traction Control/Electronic Limited Slip › Control Unit/Module (park outside, 2015–2018) 23V652000
- Hyundai Azera — Service Brakes, Hydraulic › Antilock/Traction Control/Electronic Limited Slip › Control Unit/Module (park outside, 2015–2015) 23V651000
- Hyundai Equus — Service Brakes, Hydraulic › Antilock/Traction Control/Electronic Limited Slip › Control Unit/Module (park outside, 2015–2015) 23V651000
- Kia K900 — Service Brakes, Hydraulic › Antilock/Traction Control/Electronic Limited Slip › Control Unit/Module (park outside, 2016–2018) 22V051000
- Hyundai Genesis — Service Brakes, Hydraulic › Antilock/Traction Control/Electronic Limited Slip › Control Unit/Module (park outside, 2015–2016) 21V160000
- Kia Cadenza — Service Brakes, Hydraulic › Antilock/Traction Control/Electronic Limited Slip › Control Unit/Module (park outside, 2017–2019) 21V137000
All the full-size sedans we cover
Method and limits
- Complaints: NHTSA public complaint database, model years 2015–2025, each decoded to its exact engine through the partial VIN it carries.
- Do not compare complaint totals between engines or models — totals track sales. Only within-group shares (component mix, severity rates) are comparable, because volume cancels out.
- Claims on this page only appear when they clear preset thresholds (deviation ≥1.25×, samples ≥500 mentions or ≥80 complaints). Absence of a claim means the data didn't support one, not that we didn't look.