What are the most common problems with the 2012 Infiniti M56?

The primary ownership concern is **driveshaft fatigue and breakage**, indicated by multiple recalls. Verify any recall work has been performed.

How many recalls does the 2012 Infiniti M56 have?

The 2012 Infiniti M56 currently has 12 recalls on file. Review the full recall report to see affected components and available remedies.

Is the 2012 Infiniti M56 a good buy used?

Verdict: Proceed with caution. The primary ownership concern is **driveshaft fatigue and breakage**, indicated by multiple recalls. Verify any recall work has been performed. While consumer complaints are absent, the significant recall count (12) and TSBs (56) suggest potential for numerous minor issues and a need for diligent maintenance. Expect **high fuel costs**; the 5.6L V8 requires premium fuel and achieves an EPA combined 19 MPG. Safety ratings are strong, with an overall 4 out of 5 stars from NHTSA, including a perfect 5-star rating for side crash protection. The **premium interior** offers a comfortable and upscale environment, a hallmark of Infiniti's luxury offerings. Always verify service history, open recalls, and maintenance records before purchasing.

What maintenance costs should I expect for the 2012 Infiniti M56?

Refer to the maintenance cost guide for interval schedules, DIY difficulty ratings, and typical repair cost ranges for the 2012 Infiniti M56.

2012 Infiniti M56 Report

Known issues, recalls, running costs, and what to check before you buy.

Updated Jun 4, 2026Ethan Miller1 Critical Recall

Overall Score

Our Verdict

Proceed with caution

Key Takeaways

The primary ownership concern is driveshaft fatigue and breakage, indicated by multiple recalls. Verify any recall work has been performed.
While consumer complaints are absent, the significant recall count (12) and TSBs (56) suggest potential for numerous minor issues and a need for diligent maintenance.
Expect high fuel costs; the 5.6L V8 requires premium fuel and achieves an EPA combined 19 MPG.
Safety ratings are strong, with an overall 4 out of 5 stars from NHTSA, including a perfect 5-star rating for side crash protection.

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Overview

2012 Infiniti M56

The 2012 Infiniti M56 presents a compelling package of V8 power and premium appointments, aiming for the heart of the luxury sedan market. While it boasts strong safety ratings and respectable highway fuel economy for its class, potential buyers must be aware of its 'Average' reliability assessment. This verdict stems largely from extensive recall campaigns focused on the driveline, specifically repeated driveshaft failures. Despite a lack of consumer complaints, this pattern suggests a systemic issue warranting thorough pre-purchase scrutiny. The 5.6-liter V8 engine delivers robust performance, paired with a smooth seven-speed automatic transmission. High fuel costs are a consideration given its premium fuel requirement and EPA estimates.

Critical Failure Risk

Recalls indicate a persistent issue with driveshaft fatigue and breakage, particularly in 2WD models. This can lead to loss of propulsion or uncontrolled vehicle dynamics.

Early detection can help you avoid a $800-$1,500 repair.

Open Maintenance Analysis →

Safety & Bulletins

Open Recalls12

Service Bulletins0

Full Recall History →

Owner Complaints

No primary complaint themes found.

Detailed Issue Breakdown →

Performance & Efficiency

Fuel Efficiency

Combined

MPG

City

MPG

Highway

MPG

Full Vehicle Specifications ↓

Reliability

Practicality

The score is mainly limited by high fuel consumption.

Buyer Fit

Who This Car Is For

Best for

Drivers seeking a powerful, RWD luxury sedan with a comfortable interior.

+2 more buyer-fit notes in the full report

Avoid if

Budget-conscious buyers or those prioritizing absolute mechanical simplicity.

+2 more buyer-fit warnings in the full report

2012 Infiniti M56 Reliability Analysis

Specs

Vehicle Specs

Fuel Type: Premium
Transmission: Automatic (S7)
Drivetrain: Rear-Wheel Drive
Body Style: Sedan
EPA Combined MPG: 19

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Most Common Issues

1. Driveshaft Failure

Most reported

Usage data observed

2. Fuel System Leak

Usage data observed

See all common issues in the maintenance guide

First Service Interval

- Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Brake Inspection

Est. shop cost: $120 - $200

5,000 mi

Unlock the full maintenance guide for every scheduled service interval and cost forecast.

Full pre-purchase inspection checklist

Complete maintenance schedule (4 service intervals)

Repair forecasts with mileage and cost context

Full buyer-fit guidance and who should avoid it

Full specs and trim-level context

12 recall campaign details & remedy notes

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FAQ

Is the 2012 Infiniti M56 reliable?

The CarFocal Reliability Score for the 2012 Infiniti M56 is 8.9/10. Reliability score is 8.9/10. NHTSA recalls: 12. Owner complaints: 0.

How practical is the 2012 Infiniti M56 for daily use?

Practicality score is 5.0/10. The score is mainly limited by high fuel consumption. EPA combined economy is 19 MPG.

What is the overall score for the 2012 Infiniti M56?

The CarFocal Overall Score for the 2012 Infiniti M56 is 6.8/10. Overall score is 6.8/10 (Good). Confidence 85%. Maintenance 8.3/10. Practicality 5.0/10.

What does it cost to own and maintain a 2012 Infiniti M56?

Based on Carfocal's data, First listed service: - Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Brake Inspection at 5,000 miles. Estimated first-year maintenance: $400 - $700. Repair prediction highlight: Driveshaft (typical at 80,000 miles, estimated cost Min: $800 • Max: $1,500).

What engine is in the 2012 Infiniti M56?

Engine specs list 8 • 5.6.

What transmission does the 2012 Infiniti M56 use?

According to CarFocal's specs for the 2012 Infiniti M56, transmission is Automatic (S7). The paired drivetrain is Rear-Wheel Drive.

Does the 2012 M56 require Premium gas?

Manufacturer fuel recommendation: Premium.

What is the combined EPA MPG for the 2012 Infiniti M56?

EPA combined estimate is 19 MPG.

What driver assistance and safety features are available on the 2012 Infiniti M56?

1 standard driver assistance features. Key features include Tire Pressure Monitoring System.

What body style is the 2012 Infiniti M56?

According to CarFocal's specs for the 2012 Infiniti M56, body style is sedan.

What drivetrain does the 2012 Infiniti M56 use?

According to CarFocal's specs for the 2012 Infiniti M56, drivetrain is Rear-Wheel Drive. Transmission is Automatic (S7).

What are the NHTSA safety ratings for the 2012 Infiniti M56?

NHTSA ratings: Overall 4/5 • Frontal 4/5 • Side 5/5 • Rollover 4/5.

Are there open safety recalls on the 2012 Infiniti M56?

This model year has 12 official safety campaigns listed.