2003 INFINITI G35

The 2003 Infiniti G35 is a popular sports sedan and coupe known for its engaging driving dynamics, stylish design, and relatively affordable price point. It came equipped with a 3.5-liter V6 engine (VQ35DE) producing around 260-280 horsepower and 260-270 lb-ft of torque, depending on the trim level. The engine was paired with either a 5-speed automatic or a 6-speed manual transmission. Owners generally appreciate the G35’s sporty handling, comfortable interior, and distinctive exhaust note. However, common complaints include issues with reliability, particularly regarding oil consumption, electrical components, and suspension wear.

Engine

3.5L V6 (VQ35DE)

• Excessive Oil Consumption
  • Description/Symptoms: The engine consumes an abnormally high amount of oil, often requiring frequent top-offs between oil changes. This can lead to low oil levels and potential engine damage if left unaddressed. Blue smoke from the exhaust may be present.
  • Solution: Replacing the piston rings and valve stem seals can address the issue, although it is an extensive and costly repair. Sometimes just replacing the PCV valve can help mitigate the issue.
  • Estimated Cost to Fix: $1,500 - $4,000+
  • Recalls: None Found
• Camshaft Position Sensor Failure
  • Description/Symptoms: The camshaft position sensor fails, leading to poor engine performance, rough idling, stalling, and difficulty starting the engine. The check engine light will likely illuminate.
  • Solution: Replace the faulty camshaft position sensor.
  • Estimated Cost to Fix: $100 - $300+
  • Recalls: None Found
• Crankshaft Position Sensor Failure
  • Description/Symptoms: The crankshaft position sensor fails, leading to poor engine performance, rough idling, stalling, and difficulty starting the engine. The check engine light will likely illuminate.
  • Solution: Replace the faulty crankshaft position sensor.
  • Estimated Cost to Fix: $100 - $300+
  • Recalls: None Found

Transmission

5-Speed Automatic

• Transmission Slipping/Harsh Shifting
  • Description/Symptoms: The transmission slips between gears, shifts harshly, or fails to engage properly. This can be caused by worn-out clutch packs, valve body issues, or low transmission fluid.
  • Solution: A transmission flush and fluid change might temporarily alleviate the issue. More severe cases might require valve body repair or a complete transmission rebuild or replacement.
  • Estimated Cost to Fix: $200 (flush) - $3,000+ (rebuild/replacement)
  • Recalls: None Found

6-Speed Manual

• Clutch Failure
  • Description/Symptoms: The clutch wears out prematurely or fails, leading to slipping, difficulty shifting, or an inability to engage gears.
  • Solution: Replace the clutch disc, pressure plate, and throw-out bearing. Resurfacing or replacing the flywheel may also be necessary.
  • Estimated Cost to Fix: $800 - $1,500+
  • Recalls: None Found

Suspension

• Worn Control Arm Bushings
  • Description/Symptoms: Worn control arm bushings cause clunking noises from the suspension, particularly when going over bumps or during braking. The vehicle may also exhibit poor handling and uneven tire wear.
  • Solution: Replace the worn control arm bushings or the entire control arm assembly.
  • Estimated Cost to Fix: $200 - $800+ per control arm
  • Recalls: None Found
• Strut/Shock Absorber Failure
  • Description/Symptoms: Leaking struts or shocks result in a bouncy ride, poor handling, and increased stopping distance.
  • Solution: Replace the worn struts or shocks.
  • Estimated Cost to Fix: $200 - $600+ per strut/shock
  • Recalls: None Found

Electrical

• Window Motor Failure
  • Description/Symptoms: The power window motor fails, preventing the window from opening or closing.
  • Solution: Replace the faulty window motor.
  • Estimated Cost to Fix: $150 - $400+
  • Recalls: None Found
• Door Lock Actuator Failure
  • Description/Symptoms: The door lock actuator fails, causing the door to not lock or unlock with the remote or the interior switch.
  • Solution: Replace the faulty door lock actuator.
  • Estimated Cost to Fix: $150 - $400+
  • Recalls: None Found
• BCM (Body Control Module) Issues
  • Description/Symptoms: The BCM can cause a variety of electrical issues, including problems with lighting, power windows, door locks, and security system.
  • Solution: Diagnose and repair the BCM. In some cases, the BCM may need to be replaced and reprogrammed.
  • Estimated Cost to Fix: $200 - $1,000+
  • Recalls: None Found

Exterior

• Rust (Especially around wheel wells and undercarriage)
  • Description/Symptoms: Rust develops on various parts of the vehicle, especially in areas exposed to moisture and road salt. This can weaken the structure of the vehicle.
  • Solution: Remove rust, repair damaged areas, and apply rust prevention treatments.
  • Estimated Cost to Fix: $100 - $1,000+ (depending on severity)
  • Recalls: None Found

Interior

• Center Console Cup Holder Breakage
  • Description/Symptoms: The cup holders in the center console are prone to breaking, making them unusable.
  • Solution: Replace the cup holder assembly or the entire center console.
  • Estimated Cost to Fix: $50 - $300+
  • Recalls: None Found
• Climate Control Display Failure
  • Description/Symptoms: The climate control display fades or stops working altogether, making it difficult to adjust the temperature and fan settings.
  • Solution: Repair or replace the climate control unit.
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found

Summary

The 2003 Infiniti G35, while offering a sporty and enjoyable driving experience, is known for its fair share of reliability issues. Engine problems like excessive oil consumption can be costly to address, while electrical and suspension issues are also common. The severity and cost of these issues can range from minor repairs to significant expenses, making a pre-purchase inspection crucial for potential buyers. Rust is also a common concern, especially in regions with harsh winters.