* Maintenance: Regular oil changes, proper fluid maintenance (transmission, coolant, etc.), and addressing issues promptly are crucial. Neglect leads to premature wear.
* Driving habits: Aggressive driving, frequent towing, and short trips (which don't allow the engine to reach optimal operating temperature) all reduce lifespan.
* Climate: Extreme temperatures (both hot and cold) can put extra stress on the engine.
* Previous owner's care: How well the vehicle was maintained by previous owners significantly impacts longevity.
While some 1999 Ford Explorers with 5.0L V8s might reach 200,000 miles or even more with meticulous care, others might experience major issues much sooner (even under 100,000 miles) due to neglect. Therefore, quoting a specific average mileage is misleading. It's more accurate to say that with proper maintenance, 150,000 to 200,000 miles is *possible*, but not guaranteed. Beyond that, major repairs become increasingly likely.
