2020 Subaru WRX STI

The 2020 Subaru WRX STI is a performance-oriented sedan known for its turbocharged engine, all-wheel-drive system, and sporty handling. It comes exclusively with a 2.5-liter turbocharged four-cylinder engine producing 310 horsepower and 290 lb-ft of torque, paired with a six-speed manual transmission. People often praise the STI for its engaging driving experience, rally-inspired performance, and strong aftermarket support. Some common criticisms include the relatively outdated interior, firm ride quality, and less-than-stellar fuel economy.

Engine

2.5L Turbocharged Four-Cylinder (EJ257)

• Piston Ringland Failure
  • Description/Symptoms: Excessive oil consumption, loss of power, engine knocking, and potential engine failure. This is more prevalent in modified vehicles or those that have been tracked extensively.
  • Solution: Engine rebuild or replacement, often including upgraded pistons and other strengthened components.
  • Estimated Cost to Fix: $6,000 - $10,000+
  • Recalls: None Found
• Rod Bearing Failure
  • Description/Symptoms: Engine knocking or ticking noise, especially when cold or under load, followed by potential engine failure.
  • Solution: Engine rebuild or replacement, including new rod bearings and potentially a crankshaft inspection or replacement.
  • Estimated Cost to Fix: $4,000 - $8,000+
  • Recalls: None Found
• Oil Leaks (Valve Cover Gaskets, Oil Pan Gasket, AVCS)
  • Description/Symptoms: Visible oil leaks on the engine, burning oil smell, low oil levels.
  • Solution: Replacement of the leaking gaskets or seals.
  • Estimated Cost to Fix: $100 - $500+ (depending on location and severity)
  • Recalls: None Found

Transmission

6-Speed Manual

• Synchro Wear/Grinding (Specifically 5th Gear)
  • Description/Symptoms: Grinding or difficulty shifting into 5th gear, especially at higher RPMs.
  • Solution: Transmission rebuild or replacement, including replacement of worn synchros and potentially other damaged components.
  • Estimated Cost to Fix: $2,500 - $5,000+
  • Recalls: None Found
• Clutch Failure (Premature)
  • Description/Symptoms: Clutch slippage, difficulty engaging gears, high clutch pedal effort. This can be exacerbated by aggressive driving or modifications.
  • Solution: Clutch replacement, potentially including resurfacing or replacing the flywheel.
  • Estimated Cost to Fix: $1,000 - $2,000+
  • Recalls: None Found

Suspension

• Strut Mount Failure
  • Description/Symptoms: Clunking noise from the suspension, especially when going over bumps or turning.
  • Solution: Replacement of the strut mounts.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found

Electrical

• No Issues Found

Exterior

• No Issues Found

Interior

• No Issues Found

Summary

The 2020 Subaru WRX STI, while a fun and capable performance car, can suffer from some significant engine and transmission issues. The potential for piston ringland and rod bearing failures in the engine represent the most severe and costly concerns. Transmission issues, particularly with synchro wear, can also be expensive to address. While less critical, suspension issues can impact the ride quality and handling. Overall, potential buyers should be aware of these common issues and perform a thorough inspection before purchasing a used 2020 WRX STI, and consider a pre-purchase inspection by a qualified mechanic familiar with the model.