INFINITI Q45 Review

Published on 2/20/2025

The INFINITI Q45 is a luxury sedan that epitomizes the brand's commitment to delivering performance, comfort, and advanced technology. Positioned as a flagship model for INFINITI, the Q45 competes in the premium segment against other luxury vehicles from Europe and the US, offering an alternative choice for discerning buyers who value style and innovation.

History and Background

The INFINITI Q45 made its debut as a bold and innovative entry into the luxury car market. With its unique design and powerful engine, it quickly established a reputation for high performance and comfort.

  • The first generation of the Q45 was launched in 1989, featuring a V8 engine and rear-wheel drive, setting a new standard in the luxury segment.
  • The second generation, introduced in 1996, focused on enhancing interior luxury and technological features.
  • A third generation arrived in 2001, boasting improved performance metrics and advanced safety features.
  • In 2005, the Q45 received a facelift that included exterior styling updates and technology enhancements.
  • The production of the Q45 ended in 2006, marking the end of an era for INFINITI's flagship sedan.

Performance and Handling

VariantEnginePower0-60Top SpeedFuel Economy
Base4.5L V8340 hp5.8 s155 mph18/24 mpg

Interior and Comfort

FeatureBaseMidTop
Leather upholstery
Heated seats-
Bose audio system
Sunroof-
Navigation system-

Technology and Features

Technology by Model Year:

  • 2001: Introduction of advanced navigation system and premium audio
  • 2005: Facelift includes voice recognition and enhanced infotainment

Infotainment System:

  • Screen size: 7-inch display
  • Features: Navigation, premium audio, climate control integration
  • Connectivity: Bluetooth, CD changer, auxiliary input

Driver Assistance Features:

  • Standard: ABS, traction control, cruise control
  • Optional: Lane departure warning, adaptive cruise control

Safety

The Q45 has a strong safety record, bolstered by its robust construction and extensive list of safety features. It received favorable crash test ratings, demonstrating its capability to protect occupants in various scenarios.

Safety Ratings:

  • NHTSA Rating: 4 stars
  • IIHS Rating: Good

Safety Features:

  • Standard: Dual front airbags, side impact airbags, traction control
  • Optional: Rearview camera, lane departure warning

Value for Money

YearConditionPrice Range
2006Excellent$7,000 - $10,000
2005Good$5,500 - $8,500
2004Fair$4,000 - $6,500

Running Costs:

Owning a Q45 is relatively economical for a luxury vehicle, with its maintenance costs being fairly predictable. Fuel economy is respectable for its class, and INFINITI's reputation for reliability helps keep repair costs manageable.

  • Fuel Economy: 18 city / 24 highway / 20 combined
  • Service Intervals:
    • Oil Change: Every 5,000 miles
    • Major Service: Every 30,000 miles
  • Common Repair Costs:
    • Brake pad replacement: $250 - $400
    • Alternator repair: $400 - $600

Known Issues by Year:

  • 2003: Issues with the transmission control module
  • 2005: Reports of electrical system malfunctions

Competitor Comparison

Competitor 1: Lexus LS

  • Market Position: Lexus' LS series is a direct competitor in the luxury sedan market, known for its refinement and reliability.
  • Features Comparison: The LS offers similar comfort and technological advancements but lacks the sporty edge of the Q45.
  • Price Comparison: Generally priced higher than the Q45, reflecting its status and brand reputation.
  • Running Costs: Maintenance and repair costs are comparable, though the LS may have a slight edge in fuel efficiency.

Competitor 2: BMW 7 Series

  • Market Position: The BMW 7 Series is synonymous with luxury performance and cutting-edge technology.
  • Features Comparison: Offers more dynamic handling and a wider range of engine options, with comparable luxury features.
  • Price Comparison: Significantly more expensive, often reflecting its more comprehensive range of options and prestige.
  • Running Costs: Higher maintenance costs due to complex engineering and premium parts.

Competitor 3: Mercedes-Benz S-Class

  • Market Position: The S-Class is the ultimate luxury sedan, setting benchmarks in innovation and comfort.
  • Features Comparison: Offers superior interior quality and advanced safety features, though at a premium price.
  • Price Comparison: The most expensive in its class, with a focus on luxury and prestige.
  • Running Costs: High running costs, with expensive parts and service needs.

Verdict

The INFINITI Q45 remains a solid choice for buyers seeking a luxurious and performance-oriented sedan without the exorbitant costs associated with some of its European competitors. It delivers a refined driving experience, a well-appointed interior, and a host of technological features that make it a worthy contender in the luxury vehicle segment.