2015 INFINITI Q70

The 2015 INFINITI Q70 is a mid-size luxury sedan that offers a blend of comfort, performance, and style. Available engine options include a 3.7-liter V6 producing 330 horsepower and 270 lb-ft of torque, a 5.6-liter V8 generating 420 horsepower and 417 lb-ft of torque, and a hybrid powertrain that combines a 3.5-liter V6 with an electric motor for a total system output of 360 horsepower. All engines are paired with a 7-speed automatic transmission. Owners often praise the Q70 for its comfortable ride, spacious interior, and powerful engine options. Common complaints include the somewhat dated infotainment system and lower fuel economy compared to competitors.

Engine

3.7L V6

• Oil Leaks
  • Description/Symptoms: Oil leaks are a common issue reported by some owners. The source of the leak often comes from the valve cover gaskets or the front timing cover. Symptoms include visible oil drips under the vehicle, a burning oil smell, and low oil levels.
  • Solution: Replacing the leaking gaskets or resealing the timing cover.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found

5.6L V8

• Timing Chain Issues
  • Description/Symptoms: Some owners have reported issues with the timing chain, leading to symptoms such as a rattling noise upon startup, a check engine light, and potential engine misfires.
  • Solution: Replacing the timing chain, tensioners, and guides.
  • Estimated Cost to Fix: $1,500 - $3,000+
  • Recalls: None Found

Hybrid (3.5L V6 + Electric Motor) No Issues Found

Transmission

7-Speed Automatic (All Engines)

• Rough Shifting/Hesitation
  • Description/Symptoms: Some owners have reported experiencing rough or jerky shifts, particularly when shifting between lower gears. Hesitation when accelerating from a stop has also been noted.
  • Solution: In some cases, a transmission fluid flush and software update may resolve the issue. More severe cases may require valve body replacement or a complete transmission rebuild.
  • Estimated Cost to Fix: $300 (fluid flush/update) - $4,000+ (rebuild)
  • Recalls: None Found

Suspension

• Premature Bushing Wear
  • Description/Symptoms: Owners have reported that suspension bushings, particularly those in the front control arms, wear out prematurely. This can lead to clunking noises when driving over bumps and decreased handling precision.
  • Solution: Replacing the worn bushings or the entire control arm assembly.
  • Estimated Cost to Fix: $200 - $800+
  • Recalls: None Found

Electrical

• Infotainment System Freezing/Crashing
  • Description/Symptoms: The infotainment system is sometimes reported to freeze, crash, or become unresponsive. This can affect navigation, audio, and climate control functions.
  • Solution: Resetting the system. A software update may be required to address the problem.
  • Estimated Cost to Fix: $0 (reset) - $200+ (software update if available)
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Some owners have experienced unexplained battery drain, leading to difficulty starting the vehicle.
  • Solution: Diagnosing and addressing the source of the parasitic drain. This may involve replacing a faulty module or repairing wiring.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Navigation Screen Delamination
  • Description/Symptoms: The navigation screen can delaminate over time, leading to a cloudy or distorted image. This affects visibility and the overall functionality of the infotainment system.
  • Solution: Replacing the navigation screen.
  • Estimated Cost to Fix: $500 - $1,500+
  • Recalls: None Found

Summary

The 2015 INFINITI Q70 presents a mix of potential issues. While the engine and transmission are generally reliable, some owners have reported oil leaks, timing chain issues (V8), and rough shifting. Suspension bushing wear and electrical glitches are also common concerns. The infotainment system can be problematic. The severity and cost of these issues vary, with engine and transmission repairs potentially reaching several thousand dollars. A thorough inspection and maintenance history review are recommended before purchasing a used 2015 Q70.