1998 Mitsubishi Montero Reliability ReportCommon Problems, Repair Costs & Expert Verdict
Quick Facts · 1998 Mitsubishi Montero
- Has 4 NHTSA recalls on record — the most notable involves the equipment:other:labels.
- Outscores the 1996 Mitsubishi Montero by 8 points — one of the stronger nearby years to consider.
- The system most likely to surface first: frame and body rust (major severity).
Should You Buy the 1998 Mitsubishi Montero?
The 1998 Mitsubishi Montero offers serious off-road capability and a robust chassis for those seeking adventure on a budget. However, be prepared for significant age-related maintenance and the potential for costly repairs, particularly concerning frame rust and the temperamental 3.5L engine. It's a buy for enthusiasts and DIYers, but a risky proposition for the uninitiated.
The 1998 Montero is a dedicated off-roader with a rugged soul, but its age brings a laundry list of potential issues, from widespread rust to engine vulnerabilities. This is not a vehicle for the casual buyer; it requires a deep understanding of its weaknesses and a willingness to invest in maintenance. Approach wit…
Best Model Years
Later 2nd Generation models (1998-1999) generally benefited from minor refinements, but the core issues remain consistent across the generation. Earlier 2nd Gen models with the 3.0L SOHC engine might be less prone to oil consumption.
Years to Avoid
Avoid any year with significant frame rust, regardless of mileage, or any 3.5L DOHC model without verifiable, meticulous oil change records.
Biggest Strengths
- Rugged body-on-frame construction
- Highly capable Super Select 4WD system
- Spacious and versatile interior
Top Risk Areas
The systems that tend to fail first on the 1998 Mitsubishi Montero, with the typical mileage window when each becomes a concern. Detailed repair-cost ranges and exact what-to-check inspection notes are in the full report.
Severe corrosion is common on the frame, rocker panels, wheel arches, and especially the rear crossmember. This compromises structural integrity and can lead to expensive, complex repairs or render the vehicle unsafe.
The 3.5L DOHC V6 is known for excessive oil consumption, often leading to sludge buildup if oil changes are neglected. This can cause premature wear, piston ring issues, and even catastrophic engine failure.
Due to its heavy curb weight and potential off-road use, suspension components like ball joints, control arm bushings, tie rod ends, and shocks wear out prematurely. Power steering pump leaks are also common.
1998 Mitsubishi Montero Mileage Danger Zones
The mileage windows when the 1998 Mitsubishi Montero most commonly needs attention. Plan ahead, budget accordingly, and inspect before you cross each threshold.
Low Risk Zone
At this mileage, the Montero is still relatively new. Focus on routine fluid changes, tire rotations, and general inspections to ensure everything is within spec.
Maintenance Zone
This is a critical mileage for the Montero, especially if it has the 3.5L engine. The timing belt replacement, which is vital for interference engines, is due. Also, start inspecting suspension components.
Elevated Risk Zone
Components begin to show significant wear from age and use. Proactive replacement of wear items is highly recommended to prevent failures. Keep a close eye on the 3.5L engine for oil consumption.
High Risk Zone
Beyond 120,000 miles, the Montero enters a phase where cumulative wear and tear can lead to major component failures. Extensive rust, engine problems, and transmission issues become more likely. A significant budget for repairs is essent…
1998 Mitsubishi Montero Ownership Cost Outlook
What it typically costs to keep the 1998 Mitsubishi Montero on the road. Full 5-year cost-of-ownership projection and major-failure-risk forecast are in the report.
Annual Maintenance
$600-900 (assuming proactive maintenance)
Moderate Repairs
$500-1,500 annually for common wear items like suspension, brakes, and minor electrical, occasionally more for larger repairs.
How Long Does the 1998 Mitsubishi Montero Last?
For a 1998 Montero, mileage is less critical than its maintenance history and the absence of severe rust. Aim for a well-documented example under 150,000 miles, but be prepared for major service regardless of odometer reading.
What 1998 Mitsubishi Montero Owners Actually Say
What Owners Love
- Exceptional off-road prowess and Super Select 4WD system.
- Robust, utilitarian design and a durable chassis.
- Spacious interior with flexible cargo and seating arrangements.
- Unique, classic SUV styling that stands out.
Common Frustrations
- Significant rust issues that can compromise structural integrity.
- Poor fuel economy, especially with the 3.5L V6.
- Oil consumption is a constant concern for the 3.5L DOHC engine.
- Dated interior and technology compared to modern SUVs.
Who Should Buy the 1998 Mitsubishi Montero?
Best For
- Off-road enthusiasts and overlanders seeking a capable platform
- DIY mechanics willing to get their hands dirty
- Individuals needing a robust, affordable tow vehicle
Not Ideal For
- Daily commuters sensitive to fuel costs
- Buyers seeking a low-maintenance, trouble-free vehicle
How the 1998 Mitsubishi Montero Compares to Rivals
The Montero slots in as a more rugged, less refined option than many contemporaries. It offers superior off-road capability compared to some, but generally lags behind Toyota/Lexus in terms of long-term, worry-free ownership, largely due to rust susceptibility and specific eng…
More Reliable Than
- Land Rover Discovery II (for overall mechanical reliability)
- Jeep Grand Cherokee (WJ) (for off-road durability without as many electrical headaches)
Comparable To
- Nissan Pathfinder (R50 - similar age-related rust and maintenance needs)
- Isuzu Trooper (similar ruggedness and some shared maintenance challenges)
NHTSA Recalls
4 recalls on record from NHTSA. Check your VIN atnhtsa.gov to see if the repair was performed.
EQUIPMENT:OTHER:LABELS
CERTAIN PASSENGER VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 208, 'OCCUPANT CRASH PROTECTION.' THE BILINGUAL ENGLISH/SPANISH REMOVABLE AIR BAG WARNING LABELS AFFIXED TO THE DASH AND TO THE SUNVISOR DO NOT MEET THE SIZE REQUIREMENTS OF THE STANDARD.
UNKNOWN OR OTHER
VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH ACCESSORY CARGO MATS IN THE THIRD-SEAT AND CARGO AREA. THIS CARGO MAT INTERFERES WITH THE LATCHING INTEGRITY OF THE FOLDING THIRD SEATS.
What breaks on the 1998 Mitsubishi Montero?
Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.
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Mitsubishi Montero by Year
Compare KeepScores across nearby years of the Mitsubishi Montero. Click any year for its full report.
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Frequently Asked Questions
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