Over some 35+ years of car ownership I have repeatedly been warned of the dangers of buying old low mileage cars, due to the likelihood that the engine has only ever been run been cold over short journey so may have excessive wear.

Is there a forthcoming problem for plug in hybrid cars capable of motorway speeds on batteries alone (e.g. BMW 330e) with average mileage, which much of the time will have been running on batteries, so will also effectively have a low mileage engine run cold?

I can imagine a commute would be from fully charged to work on batteries, and part way home after which the engine starts shortly before arriving at home and getting plugged in again.