high mileage 2018 Impreza; buy a spare trans?

[PF52]

That only applies to older models.

The new F engines however are DI and the folks here hate them too. Almost as much as CVTs.

 

[atikovi]

Well, YOU have one.

 

[PF52]

Well, YOU have one.

And it has only 4000 miles in it. I'll be dead and gone before any of the usual DI issues come about.

 

[cptbarkey]

Well, I just happen to see a 15,000 mile transmission on CP not far from me, and knowing one of the first things a potential customer might say is, Gee I like the car, but at 350,000 miles, that CVT could go any second. Drop the price $3000 and I'll take it. I thought I might grab it and be able to say, Well sir, that's always a possibility, but I have that covered and will include a like new transmission with the car.

You are such a motivated salesman. Keep blazing the untrodden path.