2002 INFINITI G20

Introduction:

The 2002 INFINITI G20 is a compact luxury sedan known for its sporty handling, stylish design, and comfortable interior. It was offered in two trim levels: the Base and the Sport. The Base model was powered by a 2.0-liter inline-4 engine with 145 horsepower and 142 lb-ft of torque, while the Sport model featured a more powerful 3.5-liter V6 with 260 horsepower and 266 lb-ft of torque. Both engines were paired with a standard 5-speed manual transmission, with a 4-speed automatic transmission available as an option.

Owners of the INFINITI G20 have praised its sharp handling, responsive engines, and comfortable cabin. However, the vehicle has also been criticized for its lack of rear legroom, firm ride, and relatively high maintenance costs.

Engine

2.0-Liter Inline-4

• Intake Valve Carbon Buildup:
  • Description/Symptoms: Deposits build up on the intake valves, leading to reduced airflow, hesitation during acceleration, and rough idling.
  • Solution: Removal of the intake manifold and cleaning of the buildup typically resolves the issue.
  • Estimated Cost to Fix: $400 - $800+
  • Recalls: None Found

3.5-Liter V6

• Knock Sensor Failure:
  • Description/Symptoms: The knock sensor monitors engine knock and adjusts timing accordingly. Failure of the sensor can lead to detonation, reduced performance, and a check engine light.
  • Solution: Replacing the faulty knock sensor is necessary.
  • Estimated Cost to Fix: $300 - $500+
  • Recalls: None Found
• Coolant Leak from Plastic T-Piece:
  • Description/Symptoms: A plastic T-piece that connects the radiator hoses to the engine can develop a leak, resulting in coolant loss and overheating.
  • Solution: Replacing the faulty T-piece resolves the issue.
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found

Transmission

5-Speed Manual

• No Issues Found

4-Speed Automatic

• Hesitation During Gear Shifts:
  • Description/Symptoms: Transmission slips or hesitates during gear changes, particularly when transitioning from 3rd to 4th gear.
  • Solution: In some cases, a transmission fluid change may resolve the issue. If the problem persists, a full transmission rebuild may be required.
  • Estimated Cost to Fix: $800 - $2,500+
  • Recalls: None Found

Suspension

• Strut Dust Boot Tearing:
  • Description/Symptoms: The rubber dust boots protecting the front struts can tear over time, allowing dirt and debris to enter the suspension system. This can lead to damage to the strut components.
  • Solution: Replacement of the torn dust boots is recommended.
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found
• Rear Shock Absorber Bushing Deterioration:
  • Description/Symptoms: Rubber bushings in the rear shock absorbers can deteriorate, leading to excessive rear-end bouncing and a harsh ride.
  • Solution: Replacement of the affected bushings is necessary.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found

Electrical

• Power Window Motor Failure:
  • Description/Symptoms: One or more power window motors may fail, resulting in non-functioning windows.
  • Solution: Replacement of the faulty motors is required.
  • Estimated Cost to Fix: $200 - $400+ per window
  • Recalls: None Found
• Alternator Overheating:
  • Description/Symptoms: The alternator may overheat and fail, leading to charging issues and potential electrical system problems.
  • Solution: Replacing the faulty alternator is necessary.
  • Estimated Cost to Fix: $600 - $1,000+
  • Recalls: None Found

Exterior

• Plastic Bumper Fading:
  • Description/Symptoms: The black plastic bumper cover on some models can fade and discolor over time.
  • Solution: Painting or replacing the affected bumper is necessary.
  • Estimated Cost to Fix: $400 - $1,000+
  • Recalls: None Found

Interior

• Climate Control Panel Buttons Sticking:
  • Description/Symptoms: The buttons on the climate control panel may become sticky or unresponsive, affecting the functionality of the HVAC system.
  • Solution: Cleaning the buttons or replacing the climate control panel may be required.
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found
• Seat Position Sensor Malfunction:
  • Description/Symptoms: The seat position sensor may fail, leading to difficulty adjusting the driver’s seat position.
  • Solution: Replacement of the faulty sensor is necessary.
  • Estimated Cost to Fix: $300 - $500+
  • Recalls: None Found

Summary

The 2002 INFINITI G20 has received mixed reviews regarding its reliability. While some owners have reported experiencing significant problems, others have found the vehicle to be relatively reliable. The engine and transmission issues can be costly to repair, while the suspension and electrical problems are generally less severe. Owners should be prepared for potential maintenance expenses when owning this vehicle.