2015 INFINITI QX70

The 2015 INFINITI QX70 is a mid-size luxury crossover SUV known for its sporty handling and distinctive exterior styling. It’s offered with a 3.7-liter V6 engine producing 325 horsepower and 267 lb-ft of torque, paired with a 7-speed automatic transmission. Some owners appreciate the QX70’s athletic driving dynamics, luxurious interior, and unique design, while others find the fuel economy and limited cargo space to be drawbacks.

Engine

3.7L V6

• Oil Leaks
  • Description/Symptoms: Oil leaks can develop from various points, including valve cover gaskets, oil pan gasket, and front timing cover. Symptoms include visible oil drips, burning oil smell, and low oil level.
  • Solution: Replacement of the leaking gaskets or seals is usually required.
  • Estimated Cost to Fix: $200 - $1000+ depending on the leak location.
  • Recalls: None Found
• Catalytic Converter Failure
  • Description/Symptoms: The vehicle’s catalytic converters may fail prematurely, leading to poor emissions, a check engine light, and reduced performance.
  • Solution: Replacement of the faulty catalytic converter(s).
  • Estimated Cost to Fix: $800 - $2000+ depending on location of converter and if OEM part is used.
  • Recalls: None Found

Transmission

7-Speed Automatic

• Slipping or Harsh Shifting
  • Description/Symptoms: Some owners have reported experiencing transmission slipping, harsh shifting, or delayed engagement, especially at higher mileage. This can be caused by wear and tear of internal components, such as valve body issues.
  • Solution: Depending on the severity, the transmission may require a fluid flush, valve body repair/replacement, or a full transmission rebuild/replacement.
  • Estimated Cost to Fix: $200 (fluid flush) - $4000+ (rebuild/replacement)
  • Recalls: None Found

Suspension

• Premature Suspension Component Wear
  • Description/Symptoms: Ball joints, control arm bushings, and sway bar links can wear out prematurely, leading to clunking noises, poor handling, and uneven tire wear.
  • Solution: Replacement of worn suspension components.
  • Estimated Cost to Fix: $200 - $800+ per component.
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: Some owners have reported issues with excessive battery drain, especially if the vehicle sits unused for extended periods.
  • Solution: Diagnosing the parasitic draw by testing individual circuits and replacing the responsible component.
  • Estimated Cost to Fix: $100 - $500+ depending on the source of the drain.
  • Recalls: None Found
• Navigation/Infotainment System Issues
  • Description/Symptoms: The navigation or infotainment system can experience glitches, freezing, or failure to boot.
  • Solution: Software updates, replacement of the head unit or individual modules.
  • Estimated Cost to Fix: $100 - $1000+ depending on the specific issue and solution.
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Sunroof Issues
  • Description/Symptoms: Sunroof may get stuck, leak, or fail to open/close properly.
  • Solution: Cleaning and lubricating the tracks, repairing or replacing the sunroof motor or related components.
  • Estimated Cost to Fix: $100 - $800+ depending on the issue.
  • Recalls: None Found

Summary

The 2015 INFINITI QX70 can be a rewarding vehicle to own but is not without its potential problems. Engine oil leaks and catalytic converter failure are the most common engine issues. Transmission problems can be costly, especially if a rebuild or replacement is necessary. Suspension components and electrical issues are also items to watch out for. While some repairs are relatively inexpensive, others can be quite costly, making a thorough pre-purchase inspection by a qualified mechanic highly recommended.