2012 Mitsubishi Montero

2012 Mitsubishi Montero

Overview

The 2012 Mitsubishi Montero, also known as the Pajero in many markets, is a body-on-frame SUV renowned for its off-road prowess and rugged construction. While generally considered a durable vehicle, like any model, it has specific areas that have seen more attention from owners regarding reliability. This analysis focuses on documented technical issues beyond routine maintenance, providing insights into potential concerns for owners and prospective buyers. We will examine common problems reported across its powertrain, suspension, electrical systems, and other key areas to offer a comprehensive reliability picture.

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Engine

3.8L V6 (6G75)

Coolant Leaks

• Symptoms: Visible coolant puddles under the vehicle, overheating, low coolant level warning light.
• Solution: Replacement of leaking gaskets, hoses, or radiator.
• Cost: $300 - $700

Oil Leaks

• Symptoms: Visible oil spots under the vehicle, burning oil smell, low oil level.
• Solution: Replacement of valve cover gaskets, oil pan gasket, or crankshaft seals.
• Cost: $250 - $600

Transmission

5-Speed Automatic

Harsh Shifting / Slipping

• Symptoms: Jerky gear changes, delayed engagement, engine revving without acceleration.
• Solution: Transmission fluid and filter change, solenoid replacement, or transmission rebuild.
• Cost: $400 - $2500

5-Speed Manual

Clutch Wear

• Symptoms: Slipping clutch, difficulty engaging gears, burning smell.
• Solution: Clutch kit replacement (clutch disc, pressure plate, release bearing).
• Cost: $600 - $1200

Suspension

Independent Front Suspension / Solid Rear Axle

Worn Ball Joints / Control Arm Bushings

• Symptoms: Clunking noises over bumps, poor steering response, uneven tire wear.
• Solution: Replacement of worn ball joints and control arm bushings.
• Cost: $400 - $800

Electrical

General Electrical System

Window Regulator Failure

• Symptoms: Power windows not operating, slow window movement, grinding noise from door panel.
• Solution: Replacement of the window regulator motor and mechanism.
• Cost: $200 - $400

Alternator Failure

• Symptoms: Dimming headlights, battery warning light illuminated, engine stalling.
• Solution: Replacement of the alternator.
• Cost: $400 - $700

Exterior

Body and Trim

Rust on Frame and Body Panels

• Symptoms: Visible corrosion, bubbling paint, structural weakness.
• Solution: Rust treatment, panel replacement, or undercoating.
• Cost: $300 - $1500+

Interior

Interior Components

HVAC Blower Motor Failure

• Symptoms: No air coming from vents, inconsistent fan speed.
• Solution: Replacement of the HVAC blower motor.
• Cost: $150 - $300

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Summary Verdict

The 2012 Mitsubishi Montero demonstrates a solid, albeit not flawless, reliability record, particularly for its intended use as a capable off-roader. The 3.8L V6 engine is generally robust but can be prone to coolant and oil leaks as it ages. Transmission issues, while not universal, can manifest as harsh shifting or clutch wear in manual variants. Suspension components like ball joints and bushings are common wear items, especially with heavy use. Electrical gremlins, such as window regulators and alternators, are also noted. Exterior rust can be a concern in certain climates. Overall, the Montero is a durable vehicle, but owners should be aware of these potential issues and factor in maintenance costs, especially if purchasing a used model.