1990 mazda 323 , help ....

Hello im a new user to this forum , i was looking at a 1990 mazda 323 , auto , with 140 ooo km looks like the original KM the numbers r all straight and all. my mechanic buddy came to check it with me to listen to the car like if it was running on 3 or 4 cylinders , the car runs great he says , no shakes or ne thing like that , i was just wondering is there ne thing i should look out for with these years? willl the motor last me a while if it only has 140 ooo km ? all and ne help would be very apprecited thank you very much.

I have 210K on my 1999 and it's still running great.