Should I get a TCS second hand car test for a 2017 car I am buying privately but which is still under factory warranty until mid 2022?

Can't hurt!
Might detect an unseen defect that may cause trouble after the guarantee.

For me it depends on the terms of the factory warranty as sometimes this is not a guarantee against all faults, nor wear and tear. So the TCS test could reveal something that you might be liable for (...although the TCS test is no guarantee either).


Why not see if the seller will go 50/50 on the TCS costs?

Well it will hurt in the amount of about 200 CHF.

Whether that's worth it surely depends on the overall price, and also how likely problems are so general condition, mileage etc.

I did it in December 2018, when I was buying my car. It's an incredible comprehensive test, took about 2, 2.5 hours and they test everything. Provided with the report, I could easily buy the car without a doubt.

I guess it depends for you on the value of the car as well. For me, the cost was less than 1% of the car's buying price, and I was lucky as the seller was a TCS member so received a discount. I always prefer to err on the safe side

ouch!

For a 2017 car I wouldn't bother, especially one that is still under warranty. What you need to know is that its not been crash-repaired, and there must be a way of doing that without a comprehensive test.

That would also be an illegale sale if not clearly stated?

True, but if he refuses to make amends you'd probably need to chase the seller yourself ... costs time, money, and nerves. Better avoid it in the first place.

Only if serious damage, a car could have been repaired many times with filler & still sold accident free in CH.