2020 Hyundai Sonata

The 2020 Hyundai Sonata marked the beginning of the eighth generation of the model, introducing a bold new design and a range of tech features. Engine options included a 2.5-liter inline-4 cylinder (191 hp, 181 lb-ft of torque) and a 1.6-liter turbocharged inline-4 cylinder (180 hp, 195 lb-ft of torque). Both engines were paired with an 8-speed automatic transmission. Many owners appreciate the Sonata’s stylish design, comfortable ride, and extensive standard features. Some common criticisms include the somewhat polarizing styling and occasional reports of minor electronic glitches.

Engine

2.5L Inline-4 Cylinder

• Engine Oil Consumption
  • Description/Symptoms: Some owners have reported excessive oil consumption, requiring them to add oil between scheduled oil changes. Symptoms may include low oil level warnings, engine knocking, and eventually engine damage if not addressed.
  • Solution: The solution varies, but often involves monitoring oil consumption and potentially replacing piston rings or other engine components. In some cases, Hyundai may perform an oil consumption test.
  • Estimated Cost to Fix: $1,500 - $5,000+ (depending on the extent of damage and repairs)
  • Recalls: None Found
• Engine Stalling/Failure
  • Description/Symptoms: Some owners reported engine stalling, failure to start, and complete engine failure. These issues were often linked to connecting rod bearing failure.
  • Solution: Engine replacement is often required.
  • Estimated Cost to Fix: $6,000 - $8,000+
  • Recalls: None Found

1.6L Turbocharged Inline-4 Cylinder

• Wastegate Actuator Issues
  • Description/Symptoms: Some owners reported issues with the wastegate actuator on the turbocharger, leading to reduced power, error codes, and potentially turbocharger failure.
  • Solution: Replacement of the wastegate actuator or the entire turbocharger.
  • Estimated Cost to Fix: $500 - $2,000+
  • Recalls: None Found

Transmission

8-Speed Automatic Transmission (Both Engine Options)

• Harsh Shifting/Jerking
  • Description/Symptoms: Some owners reported experiencing harsh or jerky shifting, particularly during low-speed maneuvers or gear changes.
  • Solution: Software updates to the transmission control module (TCM) have sometimes resolved the issue. In other cases, valve body replacement or transmission replacement is necessary.
  • Estimated Cost to Fix: $100 (software update) - $4,000+ (transmission replacement)
  • Recalls: None Found

Electrical

• Infotainment System Freezing/Crashing
  • Description/Symptoms: The infotainment system may freeze, crash, or become unresponsive. This can affect navigation, audio, and climate control functions.
  • Solution: Software updates are often the first step. In some cases, replacement of the head unit may be required.
  • Estimated Cost to Fix: $0 (software update) - $1,000+ (head unit replacement)
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Owners have reported issues with the car battery draining quickly, particularly if the vehicle sits unused for a few days. This can lead to difficulty starting the car.
  • Solution: Identifying and addressing parasitic drain (e.g., faulty module not shutting down). Battery replacement may also be necessary.
  • Estimated Cost to Fix: $150 - $500+
  • Recalls: None Found

Exterior

• Sensor Malfunctions (Blind Spot/Parking)
  • Description/Symptoms: Issues with the blind spot monitoring system or parking sensors, including false alerts or failure to detect objects.
  • Solution: Sensor replacement, recalibration of the system.
  • Estimated Cost to Fix: $200 - $800+
  • Recalls: None Found

Interior

• Sunroof Issues
  • Description/Symptoms: Sunroof malfunctions, including getting stuck open or closed, or making excessive noise.
  • Solution: Repair or replacement of the sunroof motor or track.
  • Estimated Cost to Fix: $300 - $1,000+
  • Recalls: None Found

Summary

The 2020 Hyundai Sonata, while praised for its design and features, has experienced some notable issues. Engine problems, particularly oil consumption and potential engine failure in the 2.5L engine, are a serious concern. Transmission issues, though less severe, can be annoying. Electrical glitches and sunroof malfunctions are also present. The severity of these issues ranges from minor inconveniences to potentially costly repairs. While not every 2020 Sonata will experience these problems, it’s important for potential buyers to be aware of them and to thoroughly inspect any used model before purchase.