INFINITI M56 Review

Published on 2/20/2025

The INFINITI M56 is a luxury sedan that epitomizes performance and opulence in the executive car segment. Positioned as the flagship model of the M series, the M56 offers a potent V8 engine, advanced technology, and a refined interior, making it a formidable contender against European rivals like the BMW 5 Series and Mercedes-Benz E-Class.

History and Background

The INFINITI M56 made its debut in the automotive market as part of the third-generation M series, which aimed to redefine luxury and performance for the brand. The M series has always been a showcase of INFINITI's technological advancements and design philosophy, with the M56 standing out due to its powerful engine and premium features.

  • Key Dates:
    • 2010: Launch of the third-generation M series, including the M56.
    • 2011: Introduction of advanced safety features and revised interior design.
    • 2013: Minor facelift with updated technology and styling tweaks.
    • 2015: End of production for the M56, transitioning to the Q70 nameplate.

Performance and Handling

VariantEnginePower0-60Top SpeedFuel Economy
Base5.6L V8420 hp4.8s155 mph16/24/19 mpg

Interior and Comfort

FeatureBaseMidTop
Leather Seats
Heated Seats
Navigation
Sunroof-
Premium Audio

Technology and Features

Technology by Model Year:

  • 2010: Introduction of hard-drive navigation and Bose audio system.
  • 2011: Addition of lane departure warning and blind-spot monitoring.
  • 2013: Enhanced infotainment system with updated interface.

Infotainment System:

  • Screen size: 8-inch color display
  • Features: Navigation, Bluetooth connectivity, Bose Studio Surround sound system
  • Connectivity: USB, AUX, Bluetooth audio, Satellite radio

Driver Assistance Features:

  • Standard: Rearview camera, parking sensors, traction control, ABS
  • Optional: Adaptive cruise control, lane departure warning, blind spot intervention

Safety

The INFINITI M56 has consistently performed well in crash tests, offering peace of mind for safety-conscious buyers. Its robust construction and suite of advanced safety features contribute to its high safety ratings.

Safety Ratings:

  • NHTSA Rating: 5 stars
  • IIHS Rating: Good

Safety Features:

  • Standard: Airbags, stability control, tire pressure monitoring
  • Optional: Advanced safety suite including adaptive cruise and collision warning

Value for Money

YearConditionPrice Range
2012Excellent$15,000-$18,000
2013Good$13,000-$16,000
2014Fair$11,000-$14,000

Running Costs:

The running costs for the INFINITI M56 are relatively high, typical for a luxury sedan with a large V8 engine. However, its robust performance and luxury features justify the expense for many buyers.

  • Fuel Economy: 16/24/19 mpg (city/highway/combined)
  • Service Intervals:
    • Oil Change: Every 5,000 miles
    • Major Service: Every 30,000 miles
  • Common Repair Costs:
    • Brake Pads: $300-$500
    • Alternator Replacement: $600-$800

Known Issues by Year:

  • 2011: Some reports of transmission hesitations
  • 2012: Occasional electrical issues with infotainment system

Competitor Comparison

Competitor 1: BMW 5 Series

  • Market Position: The BMW 5 Series is a benchmark in the luxury sedan segment, known for its sporty handling and brand prestige.
  • Features Comparison: The 5 Series offers a more extensive range of high-tech features and a more driver-focused cabin.
  • Price Comparison: Generally more expensive than the M56, especially with added options.
  • Running Costs: Comparable in terms of maintenance, though BMW's service packages can offset costs.

Competitor 2: Mercedes-Benz E-Class

  • Market Position: The E-Class is synonymous with luxury and comfort, offering a smooth ride with a focus on refinement.
  • Features Comparison: Offers a plush interior with a greater emphasis on luxury and technology.
  • Price Comparison: Slightly higher starting price but offers a comprehensive list of standard features.
  • Running Costs: Similar to the M56, with potential higher costs for premium services and parts.

Competitor 3: Audi A6

  • Market Position: The Audi A6 is known for its cutting-edge technology and elegant design.
  • Features Comparison: Boasts a more tech-centric interior with advanced infotainment options.
  • Price Comparison: Competitive pricing with the M56, often with attractive lease offers.
  • Running Costs: Generally lower than the M56, with efficient engine options reducing fuel expenses.

Verdict

The INFINITI M56 is a standout choice for those seeking a luxurious and performance-oriented sedan. Its powerful V8 engine, high-quality interior, and comprehensive feature list make it a compelling alternative to its European counterparts. While it may not offer the same brand cachet as some rivals, its value proposition and unique character make it an attractive option for discerning buyers.