The 2007 Infiniti M45 is a luxury mid-size sedan that was part of Infiniti's M line, produced from 2002 to 2010. For 2007, it was available in one key trim, the M45. This rear-wheel-drive sedan started with an MSRP typically in the high $40,000s. It stands out with its powerful V8 engine, upscale interior, and sporty driving dynamics, offering a compelling alternative to German luxury sedans.
The Good
The 2007 M45 excels with its robust V8 performance, providing exhilarating acceleration. Its plush interior offers exceptional comfort, while the sophisticated styling appeals to those seeking an elegant ride. Practically, it represents good value for a V8 luxury sedan, offering a reliable and enjoyable ownership experience.
The Bad
Potential buyers of the 2007 Infiniti M45 should be aware of the vehicle's less-than-stellar fuel economy due to its V8 engine. Some owners have reported issues with the navigation system and minor electrical glitches. Maintenance costs can also be higher than for some competitors.
2007 Infiniti M45: Quick Overview
- Engine Options: Only one engine was offered for the 2007 M45.
- Engine: 4.5-liter V8
- Horsepower: 325 hp @ 6,400 rpm
- Torque: 336 lb-ft @ 4,000 rpm
- Fuel Economy (EPA Estimated):
- City: 15 mpg
- Highway: 21 mpg
- Combined: 17 mpg
- 0-60 Times: Approximately 5.7 - 6.0 seconds (depending on driver and conditions)
- Towing Capacity: Not applicable (sedan)
- Trim-Level Features (M45 - Standard):
- Leather upholstery
- Heated and ventilated front seats
- Power-adjustable front seats with driver's seat memory
- Bose premium audio system
- Dual-zone automatic climate control
- Sunroof
- Xenon headlights
- 18-inch alloy wheels
- Keyless ignition and entry
- Power-adjustable tilt/telescoping steering wheel
- Rearview camera
- Cruise control
- Power windows, door locks, and mirrors
- Optional Sport Package: Included sport-tuned suspension, sport seats, paddle shifters, and unique exterior/interior trim.
- Optional Technology Package: Included navigation system, voice recognition, and premium audio upgrades.
2007 Infiniti M45 Specifications
Vehicle Information
| Year | 2007 |
| Make | Infiniti |
| Model | M45 |
| Trim | - |
| Style | - |
| Type | Sedan |
| Category | Large Car |
Manufacturing Details
| Made In | Japan |
| Manufacturing City | TOCHIGI |
Dimensions
| Doors | 4-Door |
| Curb Weight | 3995 pounds |
| Gross Vehicle Weight Rating | - |
| Overall Height | 59.50 inches |
| Overall Length | 192.60 inches |
| Overall Width | 70.80 inches |
| Wheelbase Length | 114.20 inches |
| Standard Seating | 5 |
Engine & Performance
| Engine | 4.5-L V-8 DOHC 32V |
| Engine Size | 4.5L |
| Engine Cylinders | 8 |
| Transmission | 5-Speed Automatic |
| Transmission Type | Automatic |
| Transmission Speeds | 5-Speed |
| Drivetrain | Rear-Wheel Drive |
Additional Features
| Anti-Brake System | 4-Wheel ABS |
| Steering Type | Rack & Pinion |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | $50,550 |
| Invoice Price | $46,438 |
| Delivery Charges | $715 |
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What Problems Does the 2007 Infiniti M45 Have?
The 2007 Infiniti M45 generally enjoys a reputation for solid reliability, benefiting from Nissan's robust engineering. However, like any vehicle, some common issues have been reported by owners over time. One frequently mentioned concern revolves around the infotainment system, particularly the navigation unit, which can sometimes experience glitches or become unresponsive. This can range from minor display issues to complete system failure. Another area that some owners have encountered problems with is the ABS (Anti-lock Braking System), with reports of the ABS warning light illuminating or the system malfunctioning, often related to wheel speed sensors.
While not as widespread, some drivers have noted occasional issues with suspension components, such as worn bushings or shocks, particularly on higher-mileage vehicles. This can lead to a less refined ride or knocking noises. The exterior paint, while attractive, has been reported by some to be susceptible to chipping or fading over time, especially if not properly maintained. Regarding recalls, for the 2007 model year, there were a few notable ones. One significant recall addressed potential issues with the passenger seat occupant classification system, which could prevent the airbag from deploying correctly in a crash. Another recall pertained to the fuel tank, with a potential for cracks developing and fuel leaks. It is crucial for prospective buyers to verify that any applicable recalls have been addressed.
Long-term reliability for the M45 is largely dependent on consistent maintenance. Vehicles that have received regular oil changes, fluid flushes, and timely attention to any developing issues tend to be very dependable. The V8 engine is known for its durability, but like any complex powertrain, it requires proper care. Overall, while some minor electronic and suspension issues can arise, the 2007 M45 is considered a relatively reliable luxury sedan, especially when compared to some of its more complex European rivals. It's always advisable to obtain a pre-purchase inspection from a trusted mechanic.
While not as widespread, some drivers have noted occasional issues with suspension components, such as worn bushings or shocks, particularly on higher-mileage vehicles. This can lead to a less refined ride or knocking noises. The exterior paint, while attractive, has been reported by some to be susceptible to chipping or fading over time, especially if not properly maintained. Regarding recalls, for the 2007 model year, there were a few notable ones. One significant recall addressed potential issues with the passenger seat occupant classification system, which could prevent the airbag from deploying correctly in a crash. Another recall pertained to the fuel tank, with a potential for cracks developing and fuel leaks. It is crucial for prospective buyers to verify that any applicable recalls have been addressed.
Long-term reliability for the M45 is largely dependent on consistent maintenance. Vehicles that have received regular oil changes, fluid flushes, and timely attention to any developing issues tend to be very dependable. The V8 engine is known for its durability, but like any complex powertrain, it requires proper care. Overall, while some minor electronic and suspension issues can arise, the 2007 M45 is considered a relatively reliable luxury sedan, especially when compared to some of its more complex European rivals. It's always advisable to obtain a pre-purchase inspection from a trusted mechanic.
How long will the 2007 Infiniti M45 last?
Based on owner data and typical maintenance habits, a well-maintained 2007 Infiniti M45 can realistically achieve an average of 200,000 to 250,000 miles or more. Many owners report their vehicles continuing to run reliably well into the 150,000 to 200,000-mile range with routine servicing. The V8 engine is known for its robustness and longevity, contributing significantly to its long-term durability. However, as mileage increases, wear and tear on components like suspension parts (bushings, struts), the transmission, and accessory belts become more common. The electrical system, particularly the infotainment unit, can also develop issues over time. Despite these potential wear items, the core mechanical components of the M45 are engineered for endurance. Consistent and proactive maintenance is the key factor in maximizing its lifespan and avoiding more costly repairs down the line. Neglecting fluid changes or ignoring minor warning signs can accelerate wear and shorten its service life.
What Technology & Safety Features are Included?
The 2007 Infiniti M45 offered a commendable suite of technology and safety features for its era, blending luxury with convenience. Standard tech included a Bose premium audio system with an in-dash CD player and an auxiliary audio input. The dual-zone automatic climate control ensured comfort for both driver and front passenger, while a rearview camera aided in parking maneuvers. The driver's seat offered power adjustments with memory, enhancing personalized comfort.
Optional technology packages significantly enhanced the M45's offerings. The Technology Package was a popular upgrade, adding a sophisticated navigation system with a 7-inch color display, voice recognition capabilities, and an upgraded premium audio system, often including satellite radio. This system also typically integrated Bluetooth hands-free phone connectivity. For those seeking a sportier driving experience, the optional Sport Package not only included performance enhancements but also often featured sport-stitched leather seats and unique interior trim.
In terms of driver-assistance features, the standard rearview camera was a notable inclusion. While advanced driver-assistance systems (ADAS) as we know them today were less common, the M45 provided a solid foundation for safety. Standard safety equipment included front airbags, front side-impact airbags, and roof-mounted side-curtain airbags for both rows of passengers. Traction control and stability control systems were also standard, helping to maintain control in challenging driving conditions.
Crash-test ratings for the 2007 Infiniti M45 were generally strong. The National Highway Traffic Safety Administration (NHTSA) awarded it five stars for frontal driver and passenger crash protection, as well as for side-impact driver and rear passenger protection. The Insurance Institute for Highway Safety (IIHS) rated the M45 as "Good" in its front-offset and side-impact crash tests, indicating a high level of occupant protection. These ratings underscore the M45's robust safety structure.
Optional technology packages significantly enhanced the M45's offerings. The Technology Package was a popular upgrade, adding a sophisticated navigation system with a 7-inch color display, voice recognition capabilities, and an upgraded premium audio system, often including satellite radio. This system also typically integrated Bluetooth hands-free phone connectivity. For those seeking a sportier driving experience, the optional Sport Package not only included performance enhancements but also often featured sport-stitched leather seats and unique interior trim.
In terms of driver-assistance features, the standard rearview camera was a notable inclusion. While advanced driver-assistance systems (ADAS) as we know them today were less common, the M45 provided a solid foundation for safety. Standard safety equipment included front airbags, front side-impact airbags, and roof-mounted side-curtain airbags for both rows of passengers. Traction control and stability control systems were also standard, helping to maintain control in challenging driving conditions.
Crash-test ratings for the 2007 Infiniti M45 were generally strong. The National Highway Traffic Safety Administration (NHTSA) awarded it five stars for frontal driver and passenger crash protection, as well as for side-impact driver and rear passenger protection. The Insurance Institute for Highway Safety (IIHS) rated the M45 as "Good" in its front-offset and side-impact crash tests, indicating a high level of occupant protection. These ratings underscore the M45's robust safety structure.
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2007 Infiniti M45 Prices and Market Value
When new, the 2007 Infiniti M45 had an MSRP starting in the high $40,000s, with fully optioned models exceeding $50,000. As with most luxury vehicles, the M45 experienced significant depreciation in its first few years. Currently, the used market prices for a 2007 Infiniti M45 typically range from $5,000 to $10,000, depending heavily on mileage, condition, and trim level. Models with lower mileage and the desirable Technology or Sport packages command higher prices. Factors affecting resale value include maintenance history, the presence of any accident damage, and the overall condition of the interior and exterior. Due to its age, mileage is a primary determinant of value. The V8 engine, while desirable for performance, can also deter some buyers concerned about fuel costs and potential maintenance expenses, further impacting its resale trajectory compared to less powerful or more fuel-efficient sedans.
2007 Infiniti M45 Cost of Ownership
The 2007 Infiniti M45 is generally considered costly to own rather than economical. Insurance premiums can be higher than for average sedans due to its luxury status and powerful V8 engine. Fuel costs are a significant factor, with its V8 engine averaging around 15-21 mpg combined, making it thirsty for premium unleaded. Maintenance costs are also above average; while basic oil changes are standard, more complex repairs for its luxury components or V8 engine can be expensive. Parts can be pricier, and specialized Infiniti technicians may be required. Routine maintenance like brakes, tires, and fluid changes will be similar to other luxury cars, but potential repairs to the transmission, suspension, or electronics can add up quickly. Overall, expect higher than average running costs.
2007 Infiniti M45 Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
20.00 gallons
City Mileage
17 miles/gallon
Highway Mileage
23 miles/gallon
2007 Infiniti M45 Safety Rating
NHTSA
IIHS
2007 Infiniti M45 Warranty
Basic
Original warranty
48 months / 60,000 miles
Estimated remaining
Expired
Powertrain
Original warranty
72 months / 70,000 miles
Estimated remaining
Expired
Rust
Original warranty
84 months / unlimited miles
Estimated remaining
Expired
2007 Infiniti M45 Insurance
Insurance for a 2007 Infiniti M45 is moderately priced, reflecting its status as a Sedan with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2007 Infiniti M45 Compare to Other Sedan?
The 2007 Infiniti M45 competed in a fiercely contested luxury sedan segment. Its primary rivals included the Lexus GS 430, BMW 5 Series (545i/550i), and Mercedes-Benz E-Class (E550).
Performance: The M45's 4.5-liter V8 engine delivered a potent 325 horsepower, offering strong acceleration that often matched or exceeded its competitors, particularly the V8-powered BMW and Mercedes models. The Lexus GS 430, with its 4.3-liter V8 (300 hp), was slightly less powerful but still offered ample performance. The M45's rear-wheel-drive bias provided a more engaging driving experience for some.
Features: All these vehicles offered luxurious interiors with premium materials and advanced features for their time. The M45 was well-equipped with standard leather, heated/ventilated seats, and a quality Bose audio system. Optional navigation and advanced tech were comparable to the German rivals, though perhaps slightly less intuitive than Lexus' offerings. The BMW and Mercedes often had more extensive and customizable option lists.
Reliability: Historically, the Lexus GS 430 is renowned for its superior long-term reliability, often surpassing both Infiniti and the European brands in this regard. The Infiniti M45 is generally considered reliable, but not to the same degree as Lexus. BMW and Mercedes-Benz, while offering excellent driving dynamics, are typically known for higher maintenance and repair costs and can be less reliable as they age, particularly with complex electronics and turbocharged engines.
Price: When new, the M45 was often priced slightly lower than comparable BMW and Mercedes models, offering more V8 power for the money. The Lexus GS 430 was also competitively priced. In the used market, the M45 generally depreciates more heavily than the Lexus, making it a potentially better value proposition for a powerful V8 luxury sedan. The BMW and Mercedes can hold their value better but also have higher running costs.
Alternatives:
Performance: The M45's 4.5-liter V8 engine delivered a potent 325 horsepower, offering strong acceleration that often matched or exceeded its competitors, particularly the V8-powered BMW and Mercedes models. The Lexus GS 430, with its 4.3-liter V8 (300 hp), was slightly less powerful but still offered ample performance. The M45's rear-wheel-drive bias provided a more engaging driving experience for some.
Features: All these vehicles offered luxurious interiors with premium materials and advanced features for their time. The M45 was well-equipped with standard leather, heated/ventilated seats, and a quality Bose audio system. Optional navigation and advanced tech were comparable to the German rivals, though perhaps slightly less intuitive than Lexus' offerings. The BMW and Mercedes often had more extensive and customizable option lists.
Reliability: Historically, the Lexus GS 430 is renowned for its superior long-term reliability, often surpassing both Infiniti and the European brands in this regard. The Infiniti M45 is generally considered reliable, but not to the same degree as Lexus. BMW and Mercedes-Benz, while offering excellent driving dynamics, are typically known for higher maintenance and repair costs and can be less reliable as they age, particularly with complex electronics and turbocharged engines.
Price: When new, the M45 was often priced slightly lower than comparable BMW and Mercedes models, offering more V8 power for the money. The Lexus GS 430 was also competitively priced. In the used market, the M45 generally depreciates more heavily than the Lexus, making it a potentially better value proposition for a powerful V8 luxury sedan. The BMW and Mercedes can hold their value better but also have higher running costs.
Alternatives:
- Similar: Lexus GS 430 offers a comparable V8 luxury experience with superior reliability but less aggressive styling and slightly less power.
- Alternative: For buyers prioritizing driving dynamics and brand prestige, a used BMW 5 Series (545i/550i) is a strong contender, though expect higher ownership costs. A Mercedes-Benz E550 offers similar V8 power and luxury but also comes with a premium price for maintenance. For a more budget-friendly but still luxurious option with excellent reliability, consider a used Acura RL, though it lacks the V8 power.
Final Verdict: Is the 2007 Infiniti M45 a Good Sedan?
The 2007 Infiniti M45 is ideal for buyers seeking a powerful and luxurious sedan with a potent V8 engine without the highest price tag of its German counterparts. It's a strong contender for those who prioritize performance and a comfortable, upscale interior over absolute peak reliability or fuel efficiency.
It is worth buying, especially on the used market, provided it is inspected thoroughly. Its current pricing offers significant value for a V8-powered luxury vehicle. Used buyers should focus on examples with comprehensive maintenance records. A pre-purchase inspection is highly recommended to identify any potential issues with the electronics or suspension. Opting for a model with the Technology Package enhances the ownership experience with navigation and other conveniences. Avoid models that appear neglected, as maintenance costs can be substantial. For the right buyer who understands its fuel consumption and potential for higher repair bills, the 2007 M45 offers a compelling blend of power, luxury, and style for the money.
It is worth buying, especially on the used market, provided it is inspected thoroughly. Its current pricing offers significant value for a V8-powered luxury vehicle. Used buyers should focus on examples with comprehensive maintenance records. A pre-purchase inspection is highly recommended to identify any potential issues with the electronics or suspension. Opting for a model with the Technology Package enhances the ownership experience with navigation and other conveniences. Avoid models that appear neglected, as maintenance costs can be substantial. For the right buyer who understands its fuel consumption and potential for higher repair bills, the 2007 M45 offers a compelling blend of power, luxury, and style for the money.
Eugene S
Eugene is an automotive enthusiast with over 15 years of experience in the used car market. As a writer at VINCheck.info, he brings deep industry insight and a passion for cars, helping readers make smart, informed decisions. Eugene has written hundreds of used car reviews and is known for breaking down complex automotive topics into clear, actionable advice. Over the years, he has driven and worked on a wide range of vehicles—starting with tuning street cars in his early days and eventually focusing on performance upgrades and reliability improvements. Today, he specializes in evaluating used vehicles through the lens of real-world ownership and enthusiast needs. A longtime fan of Porsche, Eugene especially appreciates vehicles that blend durability with driving enjoyment.