What engine has the longest lifespan?
Typically, diesel engines do last longer than gas engines. As we have seen above, with the right care a diesel engine can last for several hundred thousand miles to over a million, but a typical gas engine only has a lifespan of around 200,000 miles. Gasoline engines: Around 1,500 hours or more is typically considered high. With proper care and maintenance, many gas engines can last between 1,500 to 2,000 hours. Diesel engines: These engines are generally more durable, and 3,000 to 5,000 hours or more might be considered high.