The Infiniti M45, a mid-size luxury sedan, offered a blend of performance, comfort, and style that appealed to discerning drivers. Choosing the right model year is crucial to ensure a satisfying ownership experience. This guide will delve into the best and worst years of the Infiniti M45, equipping you with the knowledge to make an informed decision.
Infiniti M45 Model Year Overview
| Model Year | Pros | Cons |
|---|---|---|
| 2003-2004 (First Generation) | Relatively affordable, distinctive styling, powerful V8 engine. | Dated interior, potential for electrical gremlins, higher maintenance costs due to age. |
| 2006-2007 (Second Generation) | More refined interior, improved technology features, better handling, more powerful engine (VK45DE). | Some reliability concerns, particularly with the automatic transmission. |
| 2008-2010 (Second Generation) | Enhanced reliability, updated styling, improved interior materials, available with all-wheel drive (AWD). | Can be more expensive than earlier models, still some potential for minor electronic issues. |
| Years to Avoid | 2006 (Due to early production issues in the second generation), cars with poor maintenance records. |
Detailed Explanations
2003-2004 (First Generation)
The first-generation Infiniti M45, produced in 2003 and 2004, offered a unique alternative to the more established luxury sedans. Its distinctive styling, characterized by its aggressive front fascia and sculpted body lines, set it apart from the competition. Under the hood resided a potent V8 engine, delivering ample power for spirited driving. However, the interior design was somewhat dated compared to its rivals, and being older vehicles, these models are more prone to age-related issues like electrical problems and increased maintenance costs.
2006-2007 (Second Generation)
The second-generation Infiniti M45, introduced in 2006, represented a significant upgrade over its predecessor. The interior received a major overhaul, featuring higher-quality materials and a more modern design. Technology features were also enhanced, including a navigation system and advanced audio options. The engine, a VK45DE V8, provided even more power and improved performance. However, the 2006 model year, being the first year of the new generation, experienced some initial production issues, particularly with the automatic transmission. While these issues were often addressed under warranty, they can still be a concern for used car buyers. The 2007 model saw some improvements, but potential transmission issues remain a point to consider.
2008-2010 (Second Generation)
The 2008-2010 Infiniti M45 models built upon the improvements of the earlier second-generation cars. Reliability was further enhanced, addressing many of the concerns from the 2006 model year. The styling was subtly updated, and the interior benefited from even better materials and design refinements. An all-wheel-drive (AWD) option became available, providing enhanced traction and stability in inclement weather. These models generally offer a more refined and reliable ownership experience, though they command a higher price than earlier examples.
Years to Avoid
Generally, the 2006 model year should be approached with caution due to its early production issues within the second generation. While not all 2006 M45s are problematic, the potential for transmission issues and other early-build glitches is higher. Additionally, regardless of the model year, any Infiniti M45 with a poor maintenance record should be avoided. Lack of regular maintenance can lead to a cascade of problems, resulting in costly repairs and a frustrating ownership experience. Always prioritize vehicles with documented service history and evidence of diligent care.
Engine (VK45DE)
The VK45DE engine is a 4.5-liter V8 that powered the second-generation Infiniti M45. It's known for its robust performance and smooth power delivery. However, like any engine, regular maintenance is critical. Issues can arise from infrequent oil changes, leading to sludge buildup and potential damage. Timing chain issues, while not extremely common, can occur in higher-mileage examples. Therefore, a thorough inspection and a comprehensive service history are crucial when considering a VK45DE-equipped M45.
Transmission
The automatic transmission in the Infiniti M45 has been a source of concern for some owners, particularly in the 2006-2007 model years. Issues can range from rough shifting to complete failure. Regular transmission fluid changes, performed according to the manufacturer's recommendations, are essential to prolong the transmission's lifespan. If you're considering an M45, especially a 2006 or 2007 model, have the transmission thoroughly inspected by a qualified mechanic.
Interior Quality
The interior quality of the Infiniti M45 improved significantly with the second-generation models (2006-2010). While the first-generation models (2003-2004) offered a comfortable and functional interior, the materials and design were somewhat dated. The second-generation cars featured higher-quality leather, softer-touch plastics, and a more modern overall aesthetic. However, even in the second-generation models, wear and tear can be evident, especially on frequently touched surfaces like the steering wheel and seats.
Technology Features
The Infiniti M45 offered a range of technology features, including a navigation system, premium audio system, and various driver-assist features. The availability and sophistication of these features varied depending on the model year and trim level. The second-generation models (2006-2010) generally offered more advanced technology compared to the first-generation cars. However, as with any older vehicle, the technology may seem outdated compared to modern vehicles.
Reliability
The reliability of the Infiniti M45 varied depending on the model year. The 2006 model year, being the first year of the second generation, experienced some initial production issues. The 2008-2010 models generally offered improved reliability compared to earlier models. However, regardless of the model year, regular maintenance is crucial to ensure long-term reliability.
All-Wheel Drive (AWD)
The all-wheel-drive (AWD) system offered on the 2008-2010 Infiniti M45 provided enhanced traction and stability, particularly in inclement weather conditions. The AWD system automatically distributes power to the wheels with the most grip, improving handling and control. If you live in an area with frequent snow or rain, an AWD-equipped M45 can be a valuable asset. However, keep in mind that AWD systems typically require more maintenance than two-wheel-drive systems.
Frequently Asked Questions
Which Infiniti M45 year is the most reliable?
The 2008-2010 models are generally considered the most reliable, benefiting from refinements and improvements over earlier years.
What are the common problems with the Infiniti M45?
Common problems can include transmission issues (especially in earlier models), electrical gremlins, and engine maintenance needs (especially with higher mileage).
Is the Infiniti M45 expensive to maintain?
As a luxury vehicle, the Infiniti M45 can be more expensive to maintain than a mainstream car, especially regarding parts and specialized labor.
Is the VK45DE engine reliable?
The VK45DE engine is generally robust but requires regular maintenance, particularly oil changes, to prevent sludge buildup and potential timing chain issues.
Should I avoid the 2006 Infiniti M45?
The 2006 model year should be approached with caution due to potential early production issues, particularly with the transmission.
Conclusion
Choosing the right Infiniti M45 model year is essential for a positive ownership experience. The 2008-2010 models offer the best combination of features, reliability, and refinement. However, regardless of the model year, prioritize examples with a documented service history and evidence of diligent maintenance.