2021 Lexus IS300

The 2021 Lexus IS300 marked the beginning of the fourth generation of the IS line, though it’s often considered a significant refresh of the previous generation. The IS300 comes standard with a 2.0-liter turbocharged inline-four engine producing 241 horsepower and 258 lb-ft of torque, paired with an eight-speed automatic transmission in rear-wheel-drive configuration or a six-speed automatic in all-wheel drive. A more powerful 3.5-liter V6 engine is available in the IS350, generating 311 horsepower and 280 lb-ft of torque. Many appreciate the IS300 for its comfortable ride, stylish interior, and reputation for reliability. Criticisms often center around its somewhat dated infotainment system and the less-than-thrilling performance of the base engine compared to rivals.

Engine

2.0L Turbocharged Inline-4

• Excessive Oil Consumption
  • Description/Symptoms: Some owners have reported higher-than-normal oil consumption, requiring more frequent oil top-offs between scheduled oil changes. Symptoms may include the low oil level warning light illuminating on the dashboard, visible blue smoke from the exhaust, and a noticeable drop in oil level on the dipstick.
  • Solution: Monitoring oil levels diligently and topping off as needed. In more severe cases, the issue may be caused by faulty piston rings or valve stem seals, requiring engine repair or replacement.
  • Estimated Cost to Fix: $2,000 - $7,000+ for engine repair or replacement.
  • Recalls: None Found

Transmission

AWR (8-Speed Automatic)

• Harsh Shifting/Hesitation
  • Description/Symptoms: Some owners have noted instances of harsh or jerky shifting, particularly during downshifts or when accelerating from a stop. Hesitation when shifting gears can also be experienced.
  • Solution: In some cases, a transmission control module (TCM) software update can resolve the issue. If the problem persists, more extensive repairs, such as valve body replacement or transmission rebuild, may be necessary.
  • Estimated Cost to Fix: $150 - $300 for TCM update; $800 - $3,500+ for more extensive repairs.
  • Recalls: None Found

Electrical

• Infotainment System Freezing/Crashing
  • Description/Symptoms: Reports of the infotainment system freezing, crashing, or becoming unresponsive. This can affect navigation, audio, and climate control functions.
  • Solution: A software update may resolve the issue. If problems continue, the infotainment unit may need to be replaced.
  • Estimated Cost to Fix: $100 - $300 for software update; $1,000+ for unit replacement.
  • Recalls: None Found

Interior

• Rattling/Squeaking Noises
  • Description/Symptoms: Some owners have reported rattles or squeaks emanating from various interior components, such as the dashboard, door panels, or center console.
  • Solution: Identifying the source of the noise and tightening or replacing the affected components. Applying felt tape or foam padding can also help dampen vibrations.
  • Estimated Cost to Fix: $50 - $500+, depending on the complexity and parts needed.
  • Recalls: None Found

Exterior

• Automatic High Beam Malfunction
  • Description/Symptoms: The automatic high beam system may not function as intended, failing to automatically dim the headlights when oncoming traffic is detected or not activating the high beams when appropriate.
  • Solution: Recalibrating or replacing the sensor for the high beam system.
  • Estimated Cost to Fix: $200 - $800
  • Recalls: None Found

Summary

The 2021 Lexus IS300 generally enjoys a strong reputation for reliability. However, some owners have encountered issues related to engine oil consumption, transmission shifting, infotainment system glitches, interior noises, and malfunctioning automatic high beams. The severity and cost of these issues can vary, with engine repairs potentially being the most expensive. While these problems may not be widespread, potential buyers should be aware of them and thoroughly inspect the vehicle before purchasing.