2018 Subaru Legacy

The 2018 Subaru Legacy is a mid-size sedan known for its standard all-wheel drive, comfortable ride, and reputation for reliability. Engine options include a 2.5-liter naturally aspirated four-cylinder engine producing 175 horsepower and 174 lb-ft of torque, and a 3.6-liter naturally aspirated six-cylinder engine that produces 256 horsepower and 247 lb-ft of torque. Both engines are paired with a Lineartronic CVT (Continuously Variable Transmission). Owners generally appreciate the Legacy’s all-weather capability and spacious interior, but some criticize its somewhat bland styling and occasionally sluggish acceleration with the base engine.

Engine

2.5L Naturally Aspirated Four-Cylinder

• Excessive Oil Consumption
  • Description/Symptoms: Some owners report excessive oil consumption, requiring them to add oil between changes. Symptoms include low oil level warnings and potential engine damage if not addressed.
  • Solution: Subaru released a technical service bulletin (TSB) addressing this issue and may perform an oil consumption test. If excessive consumption is confirmed, the engine may need to be partially rebuilt or replaced.
  • Estimated Cost to Fix: $500 - $5000+ depending on repair.
  • Recalls: None Found
• Faulty Oxygen Sensor
  • Description/Symptoms: Faulty oxygen sensors cause the vehicle to run poorly with bad fuel mileage. In some cases, the check engine light does not activate.
  • Solution: Replace the faulty oxygen sensor.
  • Estimated Cost to Fix: $200 - $300+
  • Recalls: None Found

3.6L Naturally Aspirated Six-Cylinder

No Issues Found

Transmission

Lineartronic CVT (Both Engine Options)

• Valve Body Issues
  • Description/Symptoms: Some owners have experienced CVT valve body issues, resulting in harsh shifting, hesitation, jerking, or complete transmission failure. Symptoms include the vehicle going into “limp mode.”
  • Solution: Replacing or rebuilding the CVT valve body. In some cases, a complete transmission replacement is necessary.
  • Estimated Cost to Fix: $1500 - $6000+
  • Recalls: None Found

Suspension

No Issues Found

Electrical

• Battery Drain
  • Description/Symptoms: Some owners report experiencing a parasitic battery drain that can leave them with a dead battery, especially after the vehicle has been sitting for an extended period.
  • Solution: Diagnostic testing to identify the source of the drain. This may involve checking the alternator, starter, or individual electrical components. TSB’s address this issue including performing a software update to the body control module.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found
• Infotainment System Freezing/Crashing
  • Description/Symptoms: The infotainment system may freeze, become unresponsive, or crash intermittently.
  • Solution: Software updates may resolve some issues. In other cases, the head unit may need to be replaced.
  • Estimated Cost to Fix: $100 - $1000+
  • Recalls: None Found

Exterior

• Windshield Cracking
  • Description/Symptoms: Windshields are more susceptible to cracking due to normal road hazards.
  • Solution: Windshield replacement.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found

Interior

• Sunroof Leak
  • Description/Symptoms: Water leaks into the interior through the sunroof.
  • Solution: Clean the sunroof drain tubes. In some cases, resealing is required.
  • Estimated Cost to Fix: $50 - $300+
  • Recalls: None Found

Summary

The 2018 Subaru Legacy has a few common issues to consider. Excessive oil consumption in the 2.5L engine and potential CVT valve body problems are the most significant concerns, potentially leading to costly repairs. Electrical issues, such as battery drain and infotainment system malfunctions, can also be frustrating. Although not directly related to the car, be sure to check the windshield for cracks. While the Legacy is generally regarded as reliable, prospective buyers should be aware of these potential issues and have the vehicle inspected by a qualified mechanic before purchasing.