2018 INFINITI QX30
2018 INFINITI QX30
Overview
The 2018 INFINITI QX30, a premium compact crossover, generally presents a respectable reliability profile, though not without its specific areas of concern. Built on a platform shared with Mercedes-Benz, it inherits some of that German engineering, which can be a double-edged sword. While many components are robust, certain electrical systems and powertrain elements have shown tendencies for issues that are worth noting for potential owners. The QX30 aims for a blend of sporty driving dynamics and luxury, and its reliability data reflects a vehicle that, for the most part, delivers on its promise, but requires attention to specific potential weak points.
Engine
2.0L Turbocharged I4 (M270/M274)
Coolant Leaks
- Symptoms: Visible coolant puddles under the vehicle, low coolant warning light, engine overheating.
- Solution: Inspection and replacement of leaking hoses, seals, or water pump.
- Cost: $300 - $700
Turbocharger Issues
- Symptoms: Loss of power, whistling noises from the engine bay, check engine light.
- Solution: Diagnosis and potential replacement of the turbocharger assembly or related components.
- Cost: $1,200 - $2,500
Transmission
7-Speed Dual-Clutch Automatic (DCT)
Harsh Shifting / Jerking
- Symptoms: Noticeable jolts or hesitation during gear changes, especially at low speeds.
- Solution: Software updates, transmission fluid flush and replacement, or internal transmission repairs.
- Cost: $400 - $1,500
Transmission Fluid Leaks
- Symptoms: Leaking fluid from the transmission housing, burning smell, difficulty shifting.
- Solution: Repair or replacement of seals, gaskets, or transmission lines.
- Cost: $300 - $800
Suspension
Standard Chassis
No Major Issues
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
Electrical
Infotainment System
Screen Freezing / Unresponsiveness
- Symptoms: Touchscreen becomes unresponsive, system freezes or reboots randomly.
- Solution: Software updates, or replacement of the infotainment unit.
- Cost: $500 - $1,500
Keyless Entry/Start System
Intermittent Malfunctions
- Symptoms: Vehicle not recognizing key fob, difficulty starting the engine.
- Solution: Battery replacement in key fob, reprogramming of fobs, or diagnosis of receiver module.
- Cost: $100 - $400
Exterior
Body Panels & Lighting
No Major Issues
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
Interior
Trim & Upholstery
No Major Issues
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
Summary Verdict
The 2018 INFINITI QX30 offers a generally reliable ownership experience, particularly in its suspension, exterior, and interior components, which show minimal widespread issues. The primary areas requiring attention are the powertrain and electrical systems. The 2.0L turbocharged engine can experience coolant leaks and turbocharger problems, while the 7-speed dual-clutch transmission may exhibit harsh shifting or fluid leaks. Electrical gremlins, especially with the infotainment screen and keyless entry system, are also reported. While not a reliability disaster, potential buyers should be aware of these specific potential repair costs and consider a pre-purchase inspection focusing on these areas.