102. Consistent has not been assigned while I only have engines of the same type.
Only own engines of the same type (minimum 5).
I presently own 5 Olympus.
Earlier I was checking what easy achievement I might have missed and I noticed this achievement wasn't assigned, which I found peculiar as I have normally earned it by the time we reach End Game. Reviewing my engines I have noticed that I had 5 Olympus active and 2 Talos in the museum. I honestly don't remember if you have to own the same type of engines all together or it only counts the active ones, so I have sold the 2 Talos I had in the museum, still no achievement. At this point I thought that maybe the achievement could be triggered by a purchase, so I have bought a 6th Olympus, still no luck. Logged out and logged in again, still no luck.
Either the achievement is unlocked by a routine, in which case I'll see it later, or there is a defect.
I own 6 Olympus, all bonus engines, both pax and cargo, including the new cargo bonus engine, don't remember the name, the one that updates each era, could it be that maybe has not been properly marked as Bonus and the game thinks I have 2 types of engines.