Buying a 1999 Mitsubishi Montero means hunting down a rugged, truck-based sport utility vehicle from an era before electronic traction aids replaced mechanical grit. This second-generation model stands out for its legendary Super Select four-wheel-drive system and true body-on-frame architecture. Yet, because these trucks are over two decades old, finding a clean example requires looking past faded paint and worn leather to examine critical mechanical systems. If you're shopping for a classic Japanese 4x4, you need to know which engines lasted, where rust hides, and what problems will drain your wallet.
The market for vintage SUVs has exploded, pushing buyers toward older Monteros as affordable alternatives to skyrocketing Toyota Land Cruisers. But not all Monteros are built the same, and deferred maintenance can turn a cheap purchase into a restoration nightmare. Let's break down everything you need to inspect, test, and verify before handing over your cash.
Understanding the 1999 Montero Lineup
By 1999, the second-generation Montero was near the end of its production run. Mitsubishi offered a few distinct trim levels, primarily the base model, the LS, and the better-equipped XLS. Unlike the flared-fender Montero Sport—a smaller, cheaper vehicle built on a different platform—the full-size Montero offered genuine three-row capability and a commanding driving position.
Every 1999 model relies on a heavy-duty frame designed to take abuse on rough trails. Power comes from a naturally aspirated 3.5-liter V6 engine in most late second-generation models (often cited by enthusiasts as the 6G74 powerplant), pushing out around 200 horsepower. While the Elkford competitor guide mistakenly references a "4.0-liter" engine, the actual displacement for this generation is 3.5 liters. Getting this detail right matters when you're ordering replacement spark plugs or gaskets.
The Super Select 4WD System
The crown jewel of the 1999 Montero is its Super Select 4WD system. Unlike basic part-time four-wheel-drive systems that chew up pavement if left engaged, Super Select lets you switch between rear-wheel drive and four-wheel drive high on dry pavement at speeds up to 60 mph.
More importantly, it features a manually selectable center differential lock and an available factory locking rear differential on select trims. When you test-drive a Montero, you must verify that every mode engages properly.
- Shift the transfer case lever from 2H to 4H while rolling at low speed, checking the dashboard indicator lights for flashing or solid green lights.
- Shift into 4HLc (Four High with locked center differential) on gravel or dirt, ensuring the center lock icon illuminates solidly.
- If equipped with the rear locker, find a safe dirt patch, shift into 4LLc (Four Low), and press the locker button to confirm the axle locks.
If the indicator lights flash indefinitely, the front axle freewheel clutch actuator or vacuum switches are likely failing—a very common issue on these trucks. According to the Mitsubishi Motors archives, maintaining the vacuum lines and transfer case switches is key to keeping this mechanical setup operational.
Critical Mechanical Inspection Points
Because these vehicles have logged significant mileage, you can't rely on cosmetic condition alone. Open the hood and crawl underneath with a flashlight. Pay close attention to these specific failure points.
The Valve Stem Seals and Oil Leaks
The 3.5L V6 is famously durable, but it has a few quirks. Valve cover gasket leaks are standard maintenance items, but you should also check for blue smoke upon startup. Worn valve stem seals allow oil to seep into the combustion chambers overnight, creating a puff of smoke when you first turn the key. While fixing them doesn't require a full engine rebuild, it's a labor-intensive job that gives you strong leverage for price negotiation.
Timing Belt Replacement History
The 3.5L engine uses an interference design driven by a rubber timing belt. If this belt snaps while you're driving, valves will collide with pistons, destroying the engine. Mitsubishi specifies a replacement interval of every 60,000 miles or 6 years. Never buy a Montero unless the seller provides documented proof that the timing belt, water pump, and tensioners were changed recently. If they can't prove it, budget $800 to $1,200 for a complete timing service immediately.
Suspension and Steering Wear
With torsion bars up front and coil springs in the rear, the Montero rides like a truck. Over time, front upper and lower ball joints wear out, along with the idler arm and pitman arm. Jack up the front end and shake the tires at the 12-and-6 o'clock positions. Any play indicates worn ball joints or wheel bearings that need immediate attention.
Body Rust: The Ultimate Dealbreaker
Mechanical parts are easily replaceable with tools and money, but structural rust is terminal. The Montero's unibody-reinforced frame design means rust can compromise structural integrity in places that are difficult to patch.
Check these high-risk areas thoroughly:
- Rear wheel arches and inner quarter panels where mud and salt pack in.
- The chassis rails directly above the rear axle and fuel tank.
- The front floorboards beneath the driver and passenger footwells.
- The lower tailgate hinges, which often bubble with rust from water pooling.
If you spot bubbling paint on the body panels, poke it gently with a screwdriver. Surface rust is manageable, but structural rot on the frame rails means you should walk away immediately, no matter how cheap the truck is.
Evaluating Market Value and Making an Offer
Finding a clean 1999 Montero takes patience. Prices swing wildly based on regional rust and maintenance records. Rough runners with high miles might list for under $3,000, while exceptionally clean, rust-free examples with lockers can command $8,000 to $14,000 among overlanding enthusiasts.
When you negotiate, use your mechanical findings as leverage. A missing timing belt receipt, non-working 4WD indicator lights, or worn shocks are all valid reasons to slash the asking price. For broader context on vehicle values and historical data, you can consult resources like Edmunds to cross-reference market pricing trends.
Frequently Asked Questions
How does the Montero compare to a Jeep Cherokee XJ?
The Montero offers a stiffer, heavier frame, standard third-row seating, and superior highway stability compared to the Cherokee XJ. While the XJ has a massive aftermarket for suspension lifts, the Montero provides a more refined cabin and a more sophisticated four-wheel-drive system out of the box.
What kind of fuel economy can I expect?
Expect poor fuel efficiency. The 3.5L V6 paired with a heavy four-wheel-drive system typically returns around 12 to 14 mpg in city driving and roughly 16 to 18 mpg on the highway.
Are replacement parts difficult to find?
Common service items like brake pads, filters, and suspension bushings are readily available through standard auto parts stores. However, body panels, trim pieces, and specific interior bits are increasingly hard to source new, meaning you will rely heavily on junkyards and enthusiast forums.
Can a 1999 Montero serve as a daily driver?
Yes, provided it has been well-maintained. However, driving a 25-year-old classic SUV daily requires patience, tolerance for lower fuel mileage, and a willingness to tackle minor preventative repairs before they leave you stranded.
