With the proper care and maintaining of the Nissan Engine the Nissan engine can last for 300,000 to 800,000 miles and sometimes longer.
You need to make sure the engine never overheats, change the oil every 3,000 to 5,000 miles and also change the oil filter and then the engine should last a very long time.
I have an old Nissan truck that has 400,000 miles on it but I got it when it had 350,000 miles on it and it runs very good and I would not hesitate to take it on a long road trip.
I change the engine oil and oil filter often and maintain it and it has lasted a long time.
It gets pretty good gas mileage as well.
A lot of other engines in vehicles can last a long time as well.
I've seen some trucks go to 1 million miles with the same engine and same transmission in it because they have been maintained.
1 million miles of driving is a lot of miles and most vehicles get traded in or sold well before they reach that mileage.