2012 INFINITI G37

The 2012 INFINITI G37 is a popular luxury sports sedan known for its performance and stylish design. It was available with a 3.7-liter V6 engine (VQ37VHR) producing 328 horsepower and 269 lb-ft of torque, and either a 7-speed automatic transmission or a 6-speed manual transmission (available only on the G37 Coupe and Sedan). Owners appreciate the G37 for its responsive handling, powerful engine, and upscale interior. Common complaints include the car’s somewhat firm ride, road noise, and fuel economy that isn’t the best.

Engine

3.7L V6 (VQ37VHR)

• Oil Consumption
  • Description/Symptoms: Excessive oil consumption, requiring frequent topping off between oil changes. Some owners report needing to add a quart of oil every 1,000 miles or less. Blue smoke may be visible from the exhaust upon start-up or acceleration.
  • Solution: There isn’t a single definitive fix. Some owners have had success with switching to a different viscosity of oil, while others have had to replace the piston rings or even the entire engine in severe cases. A compression test can help determine the extent of the problem.
  • Estimated Cost to Fix: $50 (oil change) - $5,000+ (engine replacement)
  • Recalls: None Found
• Timing Chain Rattle
  • Description/Symptoms: A rattling noise upon cold start-up that lasts for a few seconds. This is often caused by the timing chain tensioner losing pressure and allowing the chain to slack.
  • Solution: Replacement of the timing chain tensioner and, in some cases, the timing chain itself.
  • Estimated Cost to Fix: $800 - $1,500+
  • Recalls: None Found
• Camshaft Position Sensor Failure
  • Description/Symptoms: The engine may run rough, stall, or have difficulty starting. The check engine light will illuminate, and a diagnostic scan will reveal codes related to the camshaft position sensor.
  • Solution: Replacement of the faulty camshaft position sensor.
  • Estimated Cost to Fix: $200 - $400
  • Recalls: None Found

Transmission

7-Speed Automatic Transmission

• Valve Body Issues
  • Description/Symptoms: Harsh or delayed shifting, slipping between gears, or a complete loss of drive. The transmission may also enter “limp mode,” restricting the car’s speed.
  • Solution: Replacement or rebuilding of the valve body. In some cases, a complete transmission replacement may be necessary.
  • Estimated Cost to Fix: $800 - $4,000+
  • Recalls: None Found

6-Speed Manual Transmission

• Clutch Master Cylinder Failure
  • Description/Symptoms: Soft or spongy clutch pedal feel, difficulty shifting gears, or the clutch pedal sticking to the floor.
  • Solution: Replacement of the clutch master cylinder.
  • Estimated Cost to Fix: $200 - $400
  • Recalls: None Found

Suspension

• No Issues Found

Electrical

• Navigation/Infotainment Screen Failure
  • Description/Symptoms: The navigation or infotainment screen may become unresponsive, display distorted images, or fail completely.
  • Solution: Replacement of the screen or the entire infotainment system.
  • Estimated Cost to Fix: $500 - $2,000+
  • Recalls: None Found
• Bluetooth Connectivity Issues
  • Description/Symptoms: Difficulty pairing devices via Bluetooth, dropped connections, or poor audio quality during phone calls.
  • Solution: Software updates, replacement of the Bluetooth module, or a new infotainment system.
  • Estimated Cost to Fix: $0 - $500+
  • Recalls: None Found

Exterior

• Headlight Condensation
  • Description/Symptoms: Moisture buildup inside the headlight housings.
  • Solution: Replacement of the headlight housings or resealing of the existing housings.
  • Estimated Cost to Fix: $200 - $800+
  • Recalls: None Found

Interior

• Sunroof Motor Failure
  • Description/Symptoms: The sunroof may not open or close properly, or it may get stuck in a particular position. A grinding noise may be heard when attempting to operate the sunroof.
  • Solution: Replacement of the sunroof motor.
  • Estimated Cost to Fix: $300 - $600
  • Recalls: None Found

Summary: The 2012 INFINITI G37 has some common issues, with the engine oil consumption and transmission valve body problems being among the most significant. While other problems exist, they are less common and potentially less expensive to address. Overall, prospective buyers should be aware of these potential issues and have the vehicle thoroughly inspected before making a purchase, particularly paying attention to the engine’s oil consumption and the transmission’s performance.