* Maintenance: Regular and proper maintenance, including oil changes, filter replacements, and addressing any issues promptly, significantly extends engine life. Neglecting maintenance dramatically shortens it.
* Driving habits: Aggressive driving, frequent hard acceleration and braking, and consistently high RPMs put more stress on the engine and reduce its lifespan. Gentle driving extends it.
* Environmental conditions: Extreme temperatures (both hot and cold) can affect engine performance and longevity. Driving in dusty or salty conditions also contributes to wear.
* Specific engine: Different generations of Honda Accord engines have varied designs and inherent reliability. Some engines might be naturally more durable than others.
While some Honda Accord engines have been known to last well over 200,000 miles with proper care, others might experience significant issues before reaching that mark. A well-maintained engine could potentially reach 300,000 miles or more, but this isn't guaranteed. It's more accurate to say that with proper maintenance, a Honda Accord engine can be expected to last a very long time, but there's no definitive mileage limit.