twilight mitsuk
Well-Known Member
There is no limit to how long a train will last, provided it is maintained. VIA Rail in Canada uses cars built as far back as 1947 in daily service.
As trains get older though, especially custom units and those with drive systems, maintenance does get more intensive and parts harder to find. A 30 year design lifespan for mass transit vehicles isn't uncommon.
NYC R32 trains were built back in 1964