What Year Infiniti Q50 To Avoid

So, you're thinking about getting an Infiniti Q50, eh? Good choice. They're sharp-looking cars with a sporty feel. But like any vehicle, some years are better than others. We're going to dive into which Q50 years you might want to steer clear of, focusing on common issues and how to spot them.

The Problem Years: 2014 & 2015 Infiniti Q50

While the Q50 debuted in 2014 with a lot of promise, the early models, specifically 2014 and 2015, are the ones that tend to have the most documented problems. It's not to say all of these cars are lemons, but you'll need to be extra vigilant if you're considering one from these years.

The main issues center around two key areas: the Direct Adaptive Steering (DAS) system and some early engine problems, particularly with the 3.0t VR30DDTT engine (although this is more pronounced in later years).

Direct Adaptive Steering (DAS) - A Technological Leap, with Growing Pains

The Direct Adaptive Steering, or DAS, system is an electronically controlled steering system. Instead of a traditional mechanical linkage between the steering wheel and the wheels, the DAS uses sensors, actuators, and computers to translate your steering input into wheel movement. This was a cutting-edge technology, but early versions were plagued with issues.

Purpose: Understanding the DAS is crucial if you're looking at a 2014 or 2015 Q50. It's complex and expensive to repair. Knowing the symptoms of DAS failure can save you a lot of headaches (and money).

Key Specs and Main Parts of the DAS System

Steering Angle Sensors: These sensors measure the position of the steering wheel.
Steering Actuators: These electric motors control the steering rack based on the input from the sensors and the DAS control module.
DAS Control Module: The computer that processes the information and controls the actuators. It's the "brain" of the system.
Backup Mechanical Linkage: A mechanical linkage is included as a redundancy in case of DAS failure.

How the DAS Works (Simplified)

You turn the steering wheel.
Steering angle sensors detect the amount and speed of the turn.
This information is sent to the DAS control module.
The DAS control module, based on its programming and vehicle speed, calculates the optimal amount of steering input to apply to the wheels.
The DAS control module sends signals to the steering actuators.
The actuators move the steering rack, turning the wheels.

DAS Problems in Early Q50s

The main complaints with the DAS in the 2014 and 2015 Q50 models include:

Vague steering feel: Drivers often complained about a lack of feedback from the road. The steering felt artificial and disconnected.
Erratic behavior: In some cases, the steering could feel twitchy or unstable, especially at higher speeds.
System failures: The DAS system could fail completely, requiring a trip to the dealership.
Software glitches: Early software versions had bugs that could cause unexpected steering behavior.

Real-World Use: Troubleshooting DAS Issues

If you're test driving a Q50 with DAS, pay close attention to the steering feel. Does it feel natural and responsive, or does it feel disconnected and artificial? Listen for any unusual noises from the steering system. Look for any warning lights on the dashboard related to the steering system.

Here are some basic troubleshooting tips:

Check for warning lights: Any warning lights related to the steering system should be investigated immediately.
Steering wheel vibration: Unusual vibrations could indicate a problem with the actuators.
Erratic steering response: If the steering feels twitchy or unpredictable, there may be a software or hardware issue.
Inspect the mechanical linkage: In the event of DAS failure, the mechanical linkage should engage. Make sure it's functioning properly.

Safety Considerations with the DAS

The DAS system is a critical safety component. A failure in the system can lead to a loss of steering control. If you experience any problems with the DAS, get the vehicle inspected by a qualified mechanic immediately.

The backup mechanical linkage is designed to provide steering control in the event of DAS failure. Ensure this system is regularly inspected and maintained.

Engine Problems (VR30DDTT - 3.0t)

While the 2014 and 2015 models were primarily known for DAS issues, the introduction of the VR30DDTT engine in later years brought its own set of concerns. This engine, while powerful and advanced, has been known to experience turbocharger issues, oil leaks, and premature wear.

Early signs of VR30DDTT trouble can include:

Whining noises from the turbos: This could indicate failing turbo bearings.
Oil consumption: Keep an eye on your oil level. Excessive oil consumption can be a sign of internal engine problems.
Check engine light: Of course, this can indicate many things, but it's always worth investigating.

While the 2014 and 2015 Q50 mostly had the VQ37VHR, it's vital to check if the original owner upgraded the engine, because this could make it susceptible to VR30DDTT problems.

Other Considerations

Beyond the DAS and engine issues, remember to consider these general factors:

Maintenance History: A well-maintained car is always a better bet. Look for service records.
Accident History: A car that's been in a major accident can have hidden problems.
Overall Condition: Check the car for signs of wear and tear, both inside and out.

Making an Informed Decision

The 2014 and 2015 Infiniti Q50 models aren't necessarily bad cars, but they do require extra scrutiny. If you're comfortable with the risks and are willing to do your homework, you might be able to find a good deal. However, be prepared for potential repairs, especially related to the DAS system. Thoroughly inspect the car, get a pre-purchase inspection from a trusted mechanic, and be prepared to negotiate the price based on any potential issues.

If you’re set on a Q50, consider models from 2016 onwards, after some of the initial DAS issues were addressed (though not entirely eliminated). Later models also had improved infotainment systems.

Remember, knowledge is power. By understanding the potential problems with early Q50 models, you can make a more informed decision and avoid costly surprises.