* Maintenance history: Meticulous maintenance (regular oil changes, timely repairs, etc.) significantly extends engine life. A well-maintained van at 150,000 miles could be in better shape than a neglected one at 100,000. Check the maintenance records carefully.
* Driving conditions: Mostly highway driving is gentler on an engine than constant stop-and-go city driving.
* Specific engine: Different Chrysler Town & Country engines have varying reputations for reliability. Knowing the exact engine type (e.g., 3.3L, 3.8L, etc.) will help in assessing its typical lifespan.
* Any existing problems: Has the engine already shown signs of wear, like burning oil, decreased power, unusual noises, or overheating? These are red flags.
In short: 150,000 miles is a significant mileage for *any* vehicle. You should have a thorough pre-purchase inspection by a qualified mechanic if you're considering buying a Town & Country with that mileage. The inspection should focus on the engine's condition and identify any potential problems. The cost of the inspection will be far less than the cost of major engine repairs later.
