2018 Infiniti Q50 Problems: 3 Issues Every Owner Should Know
2018 model year · 0+ owner reports · Updated April 2026
According to Au7o's analysis of 0+ owner reports, the 2018 Infiniti Q50 has 3 documented known issues. No issues are rated critical, indicating generally reliable ownership. Across all issues, repair costs range from $0 to $1,500. DIY maintenance guides at au7o.io.
All 3 Known Issues
On the 2014-2026 Infiniti Q50, the dual-screen InTouch infotainment system suffers from significant lag, freezing, and occasional black screens. The system uses an outdated processor that struggles with modern navigation and connectivity demands.
Common Symptoms
- Touchscreen unresponsive to inputs
- Navigation freezing mid-route
- Bluetooth disconnecting frequently
- Black screen on upper or lower display
How to Fix
Perform a system reset by holding the power button for 10 seconds. Update to the latest firmware via USB. In persistent cases, the infotainment module may need replacement. Some owners have had success with aftermarket head units.
On the 2014-2026 Infiniti Q50, the Q50 Sport and Red Sport models equipped with Direct Adaptive Steering (DAS) can exhibit a disconnected steering feel, inconsistent road feedback, and occasional steering angle sensor faults. The system lacks the natural feel of a mechanical steering column.
Common Symptoms
- Numb or artificial steering feel
- Steering pulls intermittently
- Steering warning light illumination
- Inconsistent steering weight
How to Fix
Recalibrate the DAS system at the dealer. Software updates have improved steering feel in later model years. Some owners opt for the non-DAS steering column swap, though this is labor-intensive.
On the 2016-2026 Infiniti Q50, the twin-turbo VR30DDTT engine develops an annoying heat shield rattle, particularly at cold start and low RPM. The heat shields on the turbochargers and exhaust manifold loosen over time due to thermal cycling.
Common Symptoms
- Metallic rattling at cold start
- Buzzing noise at low RPM
- Rattle that disappears when engine warms up
How to Fix
Tighten or replace the heat shield mounting hardware. Stainless steel hose clamps can be used as a temporary fix. Some owners remove the heat shields entirely, though this is not recommended for underhood temperature management.