The 2005 Infiniti Q45 was the final model year for this luxury sedan, produced from 1990 to 2006. Known for its rear-wheel-drive platform and powerful V8 engine, it competed against established European and American luxury marques. This generation, the F50, featured a sleek, understated design. While specific trims were less defined than in some competitors, the Q45 was largely a single, well-equipped model. New, it ranged from approximately $55,000 to $65,000. Its popularity stemmed from its potent V8 performance and luxurious, yet discreet, styling, offering a compelling alternative for those seeking refinement without overt flash.
The Good
The 2005 Q45 boasts a potent V8 engine for exhilarating performance, a plush and quiet cabin for supreme comfort, and a sophisticated, timeless design. Its strong build suggests good reliability for its age, offering practical value and emotional satisfaction through its luxurious feel and powerful driving dynamics.
The Bad
Potential buyers should be aware of possible issues with the transmission, electronics (especially the navigation system and dashboard displays), and suspension components. Fuel economy is also a notable drawback given its V8 engine. Early signs of wear on leather and interior trim are common.
2005 Infiniti Q45: Quick Overview
- Engine Options: The 2005 Infiniti Q45 exclusively featured a 4.5-liter V8 engine.
- Horsepower: This 4.5L V8 produced 340 horsepower.
- Torque: It generated 333 lb-ft of torque.
- Transmission: Paired with a 5-speed automatic transmission.
- Drivetrain: Standard rear-wheel drive (RWD). All-wheel drive (AWD) was not offered for the 2005 model year.
- Fuel Economy: EPA estimates for the 2005 Q45 were around 17 mpg city and 23 mpg highway.
- 0-60 Times: Acceleration was brisk, with 0-60 mph times typically in the mid-to-high 5-second range.
- Towing Capacity: The Infiniti Q45 was not designed or equipped for towing, and a towing capacity is not specified.
- Trim-Level Features (largely standard across the model):
- Leather-appointed seating with heated and ventilated front seats
- Power-adjustable front seats with memory functions
- Bose premium audio system with 6-disc CD changer
- Navigation system with voice recognition
- Xenon HID headlights
- Power sunroof
- Dual-zone automatic climate control
- Keyless entry and ignition (Intelligent Key)
- Power-adjustable steering column
- Rear parking sensors
- 18-inch alloy wheels
- Optional features often included adaptive cruise control and a rear-view camera, though these were less common than the standard luxury appointments.
2005 Infiniti Q45 Specifications
Vehicle Information
| Year | 2005 |
| Make | Infiniti |
| Model | Q45 |
| Trim | - |
| Style | - |
| Type | Sedan |
| Category | Compact Car |
Manufacturing Details
| Made In | Japan |
| Manufacturing City | TOCHIGI |
Dimensions
| Doors | 4-Door |
| Curb Weight | - |
| Gross Vehicle Weight Rating | - |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | VK45DE |
| Engine Size | 4.5L |
| Engine Cylinders | 8 |
| Transmission | Automatic |
| Transmission Type | Automatic |
| Transmission Speeds | 5-Speed |
| Drivetrain | Rear-Wheel Drive |
Additional Features
| Anti-Brake System | - |
| Steering Type | - |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | - |
| Invoice Price | - |
| Delivery Charges | - |
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What Problems Does the 2005 Infiniti Q45 Have?
The 2005 Infiniti Q45, while generally considered a robust luxury sedan, does have some reported issues that potential buyers should be aware of. One of the more commonly cited concerns revolves around the transmission. Some owners have experienced premature failure or rough shifting, particularly on higher-mileage examples. This can be an expensive repair, so a thorough pre-purchase inspection is highly recommended.
Another area of concern is the vehicle's electronics. The navigation system, in particular, has been known to develop issues, with screens becoming unresponsive or failing entirely. Dashboard displays, including warning lights and instrument cluster functionality, can also be a point of failure over time. These electronic gremlins can be costly to diagnose and repair due to the complexity of the integrated systems.
Suspension components, such as ball joints and control arms, can also wear out, leading to noise and handling degradation, especially given the car's age and potential for rougher road conditions. Leaks from the power steering system have also been reported.
While there haven't been widespread, model-specific recalls that plague the 2005 Q45 extensively, it's always advisable to check for any outstanding recalls with the NHTSA. Long-term reliability can be good if the vehicle has been meticulously maintained. However, due to its age and luxury components, upkeep is crucial. Neglected maintenance, especially fluid changes for the transmission and engine, can exacerbate potential problems and lead to significantly higher repair bills down the line. The powerful V8 engine is generally reliable, but like any engine of its size and age, it can develop issues such as oil leaks or cooling system problems if not properly serviced.
Another area of concern is the vehicle's electronics. The navigation system, in particular, has been known to develop issues, with screens becoming unresponsive or failing entirely. Dashboard displays, including warning lights and instrument cluster functionality, can also be a point of failure over time. These electronic gremlins can be costly to diagnose and repair due to the complexity of the integrated systems.
Suspension components, such as ball joints and control arms, can also wear out, leading to noise and handling degradation, especially given the car's age and potential for rougher road conditions. Leaks from the power steering system have also been reported.
While there haven't been widespread, model-specific recalls that plague the 2005 Q45 extensively, it's always advisable to check for any outstanding recalls with the NHTSA. Long-term reliability can be good if the vehicle has been meticulously maintained. However, due to its age and luxury components, upkeep is crucial. Neglected maintenance, especially fluid changes for the transmission and engine, can exacerbate potential problems and lead to significantly higher repair bills down the line. The powerful V8 engine is generally reliable, but like any engine of its size and age, it can develop issues such as oil leaks or cooling system problems if not properly serviced.
How long will the 2005 Infiniti Q45 last?
Based on owner data and typical maintenance, a well-maintained 2005 Infiniti Q45 can reasonably be expected to serve its owner for 150,000 to 200,000 miles, or even more. Many examples are still on the road exceeding these figures. The V8 engine and robust chassis contribute to its long-term durability. However, weaknesses tend to emerge in the transmission and electronic systems around the 100,000-mile mark if not properly serviced. Consistent fluid changes and addressing minor issues promptly are key to maximizing its lifespan. Over time, interior components like leather and trim may show wear, but the core mechanicals can be very resilient with diligent care.
What Technology & Safety Features are Included?
The 2005 Infiniti Q45 was equipped with a suite of technology and safety features befitting a luxury sedan of its era. Standard technology included a sophisticated Bose premium audio system, often with a 6-disc in-dash CD changer, delivering rich sound quality. A prominent feature was the integrated navigation system, which, for its time, offered voice recognition capabilities, though its functionality might feel dated by today's standards.
Comfort and convenience tech was plentiful, with dual-zone automatic climate control, power-adjustable and heated/ventilated front seats with memory settings, and a power-operated sunroof. The Intelligent Key system allowed for keyless entry and ignition, adding a touch of modern convenience. Power windows, locks, and mirrors were, of course, standard.
Driver-assistance features were somewhat limited compared to modern vehicles but included standard rear parking sensors to aid in maneuvering. An optional adaptive cruise control system was available on some models, allowing the vehicle to maintain a set distance from the car ahead. A rear-view camera was also an optional, though less common, addition.
Safety was a priority, with standard front and side airbags, as well as side curtain airbags for enhanced head protection. Anti-lock Braking System (ABS) and electronic brake-force distribution (EBD) were included. Traction control and stability control systems were also standard to help maintain control in slippery conditions.
Crash-test ratings for the 2005 Infiniti Q45 are available from organizations like the National Highway Traffic Safety Administration (NHTSA). The Q45 generally performed well in its class, often achieving good ratings in frontal and side-impact tests, reflecting its robust construction and comprehensive safety equipment for the time. Specific ratings would need to be verified for the exact model year through NHTSA's database.
Comfort and convenience tech was plentiful, with dual-zone automatic climate control, power-adjustable and heated/ventilated front seats with memory settings, and a power-operated sunroof. The Intelligent Key system allowed for keyless entry and ignition, adding a touch of modern convenience. Power windows, locks, and mirrors were, of course, standard.
Driver-assistance features were somewhat limited compared to modern vehicles but included standard rear parking sensors to aid in maneuvering. An optional adaptive cruise control system was available on some models, allowing the vehicle to maintain a set distance from the car ahead. A rear-view camera was also an optional, though less common, addition.
Safety was a priority, with standard front and side airbags, as well as side curtain airbags for enhanced head protection. Anti-lock Braking System (ABS) and electronic brake-force distribution (EBD) were included. Traction control and stability control systems were also standard to help maintain control in slippery conditions.
Crash-test ratings for the 2005 Infiniti Q45 are available from organizations like the National Highway Traffic Safety Administration (NHTSA). The Q45 generally performed well in its class, often achieving good ratings in frontal and side-impact tests, reflecting its robust construction and comprehensive safety equipment for the time. Specific ratings would need to be verified for the exact model year through NHTSA's database.
What Colors Options are Available?
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2005 Infiniti Q45 Prices and Market Value
When new, the 2005 Infiniti Q45 had an MSRP ranging from approximately $55,000 to $65,000, depending on specific options and packages. Like most luxury vehicles, it experienced significant depreciation in its early years. Currently, used 2005 Q45 models can be found for anywhere from $3,000 to $8,000, with pricing heavily influenced by mileage, overall condition, and maintenance history. Factors affecting its resale value include the strong V8 engine and luxurious interior, which are appealing attributes. However, the potential for costly repairs on aging electronics and transmissions, along with lower fuel efficiency, can depress its value. A well-documented maintenance history and pristine condition are the most significant factors for maximizing its current market price.
2005 Infiniti Q45 Cost of Ownership
Owning a 2005 Infiniti Q45 can be a moderately costly endeavor. Insurance premiums will likely be higher than for a standard sedan due to its luxury classification and V8 engine. Fuel costs are a significant factor; its thirsty V8 averages around 20 mpg combined, making it less economical for daily commuting. Maintenance can be average if routine services are performed, but repairs on specialized luxury components, particularly electronics and transmission issues, can be expensive. Parts can be harder to find and pricier than for more common vehicles. Overall, it's a costly vehicle to own compared to a mainstream sedan, especially if unexpected repairs arise.
2005 Infiniti Q45 Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
18 gallons
City Mileage
16 miles/gallon
Highway Mileage
22 miles/gallon
2005 Infiniti Q45 Safety Rating
NHTSA
2005 Infiniti Q45 Recalls & Defects
AIR Bags:side/Window
Recall date
2012-02-28
Recall no.
12v079000
Source
NHTSA
Summary
Nissan IS Recalling Certain Model Year 2003-2005 Infiniti Q45 Vehicles. A Wiring Connector FOR THE Seat Mounted Airbag MAY Experience Increased Electrical Resistance, Resulting IN THE Non-Deployment OF THE Side AIR Bags.
Consequence
Non-Deployment OF Side AIR Bags Could Increase THE Risk OF Personal Injury.
Remedy
Nissan Will Notify Owners, and Dealers Will Modify THE Wiring Connector, Free OF Charge. THE Safety Recall Began ON March 19, 2012. Owners MAY Contact Nissan Customer Service AT 1-800-647-7261.
Notes
Customers MAY Contact THE National Highway Traffic Safety Administration's Vehicle Safety Hotline AT 1-888-327-4236 (Tty: 1-800-424-9153); or GO TO Http://Www.safercar.gov.
Child Seat:latch Strap
Recall date
2005-08-29
Recall no.
05v374000
Source
NHTSA
Summary
Certain Passenger Vehicles Equipped With Power Rear Seats Fail TO Conform TO THE Requirements OF Federal Motor Vehicle Safety Standard NO. 225, "child Restraint Anchorage Systems." THE Lower Anchorage Brackets IN THE Rear Seats DO NOT Meet THE Location Requirement IN This Standard. This MAY Cause Difficulty IN Attaching Some Child Seats TO These Brackets.
Consequence
IF A Child Seat IS NOT Secured, There IS AN Increased Risk OF Injury IN A Crash.
Remedy
Dealers Will Replace THE Lower Anchorage Brackets With Modified Ones TO Ensure That THE Standard IS Met. THE Recall Began ON October 17, 2005. Owners MAY Contact Infiniti AT 1-800-662-6200.
Notes
Customers MAY Also Contact THE National Highway Traffic Safety Administration's Vehicle Safety Hotline AT 1-888-327-4236 (Tty 1-800-424-9153), or GO TO Http://Www.safercar.gov.
Exterior Lighting:brake Lights
Recall date
2006-10-13
Recall no.
06v395000
Source
NHTSA
Summary
Certain Vehicles Fail TO Comply With THE Stop Lamp and Reflex Reflector Requirements OF Federal Motor Vehicle Safety Standard NO. 108, 'lamps, Reflective Devices, and Associated Equipment."
Consequence
This Standard IS TO Reduce Crashes, Injuries and Deaths BY Providing Adequate Illumination OF THE Roadway, and BY Enhancing THE Conspicuity OF Motor Vehicles ON THE Public Roads SO That Their Presence IS Perceived and Their Signals Understood, Both IN Daylight and IN Darkness or Other Conditions OF Reduced Visibility.
Remedy
Dealers Will Replace THE Rear Combination Lamp Assemblies Free OF Charge. THE Recall IS Expected TO Begin ON or About April 16, 2007. Owners MAY Contact Infiniti AT 1-800-662-6200.
Notes
Customers CAN Also Contact THE National Highway Traffic Safety Administration's Vehicle Safety Hotline AT 1-888-327-4236 (Tty 1-800-424-9153), or GO TO Http://Www.safercar.gov.
2005 Infiniti Q45 Insurance
Insurance for a 2005 Infiniti Q45 is moderately priced, reflecting its status as a Sedan with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2005 Infiniti Q45 Compare to Other Sedan?
The 2005 Infiniti Q45 competed in the near-luxury/entry-luxury sedan segment against formidable rivals such as the Lexus GS 430, BMW 5 Series (like the 545i), Mercedes-Benz E-Class (like the E350), and the Cadillac STS.
Performance: The Q45's 340-hp V8 offered strong acceleration, often rivaling or exceeding that of some competitors. The Lexus GS 430 also featured a potent V8, while the BMW 545i boasted a powerful V8 as well, often with superior handling dynamics due to BMW's engineering focus. The Mercedes E-Class offered a more refined, comfort-oriented ride, with potent engine options.
Features: The Q45 was well-equipped for its time, with leather, premium audio, and navigation. However, competitors like the BMW and Mercedes often offered more advanced driver-assistance technologies and a wider array of customization options. The Lexus GS also provided a strong feature set with a reputation for reliability.
Reliability: This is where the Q45 can be a mixed bag compared to rivals. While the V8 engine itself is generally robust, the Q45 has a reputation for more frequent electronic and transmission issues than the highly reliable Lexus GS 430. BMW and Mercedes, while offering excellent driving experiences, can also be costly to maintain and repair, with their own sets of complex issues.
Price: The Q45 generally offered a competitive price point, often slightly lower than comparable German luxury sedans when new. In the used market, it remains significantly more affordable than a comparable Lexus GS 430 or BMW 5 Series of the same vintage, making it an attractive option for budget-conscious buyers seeking V8 power and luxury.
Alternatives:
* Similar: The Lexus GS 430 is a very similar alternative, offering comparable V8 performance and luxury with a stronger reputation for long-term reliability. The Cadillac STS with its V8 is another option, offering American luxury and power, though its refinement might not match the Q45.
* Potentially Better: If reliability is paramount, the Lexus GS 430 is often the preferred choice. If driving dynamics are a priority, a BMW 5 Series (e.g., E60 545i) offers a more engaging driving experience but likely at a higher maintenance cost. The Mercedes-Benz E-Class offers a more serene and comfortable ride, though often at a higher used price point.
Performance: The Q45's 340-hp V8 offered strong acceleration, often rivaling or exceeding that of some competitors. The Lexus GS 430 also featured a potent V8, while the BMW 545i boasted a powerful V8 as well, often with superior handling dynamics due to BMW's engineering focus. The Mercedes E-Class offered a more refined, comfort-oriented ride, with potent engine options.
Features: The Q45 was well-equipped for its time, with leather, premium audio, and navigation. However, competitors like the BMW and Mercedes often offered more advanced driver-assistance technologies and a wider array of customization options. The Lexus GS also provided a strong feature set with a reputation for reliability.
Reliability: This is where the Q45 can be a mixed bag compared to rivals. While the V8 engine itself is generally robust, the Q45 has a reputation for more frequent electronic and transmission issues than the highly reliable Lexus GS 430. BMW and Mercedes, while offering excellent driving experiences, can also be costly to maintain and repair, with their own sets of complex issues.
Price: The Q45 generally offered a competitive price point, often slightly lower than comparable German luxury sedans when new. In the used market, it remains significantly more affordable than a comparable Lexus GS 430 or BMW 5 Series of the same vintage, making it an attractive option for budget-conscious buyers seeking V8 power and luxury.
Alternatives:
* Similar: The Lexus GS 430 is a very similar alternative, offering comparable V8 performance and luxury with a stronger reputation for long-term reliability. The Cadillac STS with its V8 is another option, offering American luxury and power, though its refinement might not match the Q45.
* Potentially Better: If reliability is paramount, the Lexus GS 430 is often the preferred choice. If driving dynamics are a priority, a BMW 5 Series (e.g., E60 545i) offers a more engaging driving experience but likely at a higher maintenance cost. The Mercedes-Benz E-Class offers a more serene and comfortable ride, though often at a higher used price point.
Final Verdict: Is the 2005 Infiniti Q45 a Good Sedan?
The 2005 Infiniti Q45 is ideal for the discerning buyer seeking potent V8 performance and a luxurious, comfortable ride without the premium price tag of its German or Japanese luxury counterparts on the used market. It's an excellent choice for those who prioritize smooth cruising and ample power for highway travel and who are mechanically inclined or have a trusted mechanic familiar with Japanese luxury vehicles.
It is worth buying if you find a well-maintained example with a thorough service history, preferably one where transmission and electronic systems have been addressed or appear to be in good working order. Buying new is not an option. Focus on finding a lower-mileage vehicle in excellent condition. While its fuel economy and potential for costly electronic repairs are drawbacks, its significant depreciation makes it an appealing value proposition for those willing to accept the risks associated with an aging luxury car. A thorough pre-purchase inspection is non-negotiable.
It is worth buying if you find a well-maintained example with a thorough service history, preferably one where transmission and electronic systems have been addressed or appear to be in good working order. Buying new is not an option. Focus on finding a lower-mileage vehicle in excellent condition. While its fuel economy and potential for costly electronic repairs are drawbacks, its significant depreciation makes it an appealing value proposition for those willing to accept the risks associated with an aging luxury car. A thorough pre-purchase inspection is non-negotiable.
Jovan
Jovan specializes in interpreting vehicle records and making sense of VIN data. With over 10 years of experience in the automotive data industry, his work ensures that every report is clear, accurate, and useful for car buyers.