2007 Infiniti M45 Sport Sedan

The mid-2000s were a fascinating time for luxury sport sedans. BMW was hitting its stride, Mercedes was perpetually solid, and then there was Infiniti, offering a distinctive Japanese take on the formula. The 2007 Infiniti M45 Sport, in particular, carved out a niche for itself – a blend of muscular performance, refined comfort, and a healthy dose of technology. But was it a true contender or just a compelling alternative? Let's dive deep.

Model Year Nuances and Key Differences

While visually similar, there are some subtle differences between the earlier 2006 and the 2007-2010 M45 models. The 2007 received a few cosmetic updates, including a revised front grille and taillights, lending it a slightly more modern appearance. However, the core ingredients remained the same: a potent V8 engine, rear-wheel drive (AWD was available), and a focus on driver engagement.

The primary differentiator within the M45 lineup was whether you opted for the standard model or the "Sport" trim. The Sport wasn't just a badge; it brought tangible performance enhancements.

Sport vs. Standard: A Tale of Two Sedans

Here's a breakdown of the key differences that made the M45 Sport a compelling choice for driving enthusiasts:

• Suspension: The Sport model featured a tighter, sport-tuned suspension with firmer shocks and springs. This resulted in reduced body roll and sharper handling.
• Wheels and Tires: The Sport boasted larger, more aggressive wheels (typically 19-inch) wrapped in lower-profile performance tires. This improved grip and responsiveness.
• Brakes: Larger front brake rotors and calipers provided improved stopping power and reduced brake fade under hard use.
• Styling: Subtle visual cues, such as unique badging and a slightly different rear spoiler, subtly hinted at the Sport's enhanced performance capabilities.
• Rear Active Steer (RAS): Some Sport models were equipped with RAS, enhancing agility and stability, especially at higher speeds.

Under the Hood: The VK45DE V8

The heart of the 2007 Infiniti M45 was the VK45DE 4.5-liter V8 engine. This naturally aspirated powerplant delivered a healthy dose of power and torque, making it a joy to drive both around town and on the open road.

Engine Specifications:

This engine wasn't just about peak numbers; it was about the character. The VK45DE delivered a smooth, linear power delivery, with a satisfying growl that encouraged you to push the car harder. It wasn't as high-revving as some of its competitors, but the abundance of low-end torque made it incredibly responsive in everyday driving situations.

Real-World Driving Impressions

Behind the wheel, the 2007 Infiniti M45 Sport feels like a well-balanced machine. The steering is nicely weighted, providing good feedback from the road. The sport-tuned suspension does a commendable job of minimizing body roll, allowing you to confidently tackle corners. While not as razor-sharp as a BMW 5-Series of the same era, the M45 Sport offers a more comfortable and compliant ride, making it a better choice for daily commutes. The brakes are strong and responsive, inspiring confidence during spirited driving.

The interior is a comfortable and well-appointed space. The seats are supportive and offer ample adjustment. The cabin is generally quiet, though some road noise can be present on rough surfaces. The technology, while not cutting-edge by today's standards, is user-friendly and functional. The infotainment system features a relatively intuitive interface, and the navigation system (if equipped) is easy to use.

Pros and Cons: The Verdict

Here's a quick summary of the strengths and weaknesses of the 2007 Infiniti M45 Sport:

• Pros:
  • Strong and responsive V8 engine
  • Sport-tuned suspension for improved handling
  • Comfortable and well-appointed interior
  • Unique and distinctive styling
  • Generally reliable (with proper maintenance)
  • More affordable than some of its European rivals
• Cons:
  • Fuel economy can be poor (especially with aggressive driving)
  • Infotainment system is dated compared to modern systems
  • Some interior materials feel less premium than competitors
  • Rear-wheel drive models can struggle in snow or ice (AWD alleviates this)
  • Can be expensive to maintain, especially if neglected

Technology Highlights

The 2007 Infiniti M45 was packed with technology for its time. Here are some of the notable features:

• Intelligent Cruise Control (ICC): This system uses radar to maintain a set distance from the vehicle ahead, automatically adjusting speed to maintain a safe following distance.
• Lane Departure Warning (LDW): This system alerts the driver if the vehicle is drifting out of its lane without a turn signal.
• RearView Monitor: A rearview camera system provides a live video feed of the area behind the vehicle when backing up.
• Bose Premium Sound System: A high-fidelity sound system delivers excellent audio quality.
• Voice Recognition: Allows the driver to control certain functions (such as navigation and audio) using voice commands.

Alternative Considerations

When considering a 2007 Infiniti M45 Sport, it's worth comparing it to its contemporaries. The BMW 545i/550i offered sharper handling, while the Mercedes-Benz E550 provided a more luxurious and refined experience. The Acura TL Type-S was a less expensive but still sporty alternative. Ultimately, the best choice depends on your individual priorities and driving preferences.

Spec Table: 2007 Infiniti M45 Sport (RWD)

In conclusion, the 2007 Infiniti M45 Sport represents a compelling blend of performance, luxury, and value. It's not without its flaws, but its strong V8 engine, sport-tuned suspension, and distinctive styling make it a rewarding and engaging car to drive. Finding a well-maintained example is key to long-term enjoyment.

Final Note: So, is the M45 Sport a truly forgotten gem, or just a decent also-ran in a competitive segment? Let's hear your opinions! Did the Infiniti's Japanese approach offer something uniquely valuable compared to its German rivals? Or were those rivals ultimately more polished and desirable? Let the debate begin!