Not ZTs/ 75s, but other cars in the rover range I think the difference is noticeable, and makes the cars a lot worse. Soundproofing is the biggest gripe. The difference between my 214 and late 25 was significant, and I’ve added some soundproofing to the 25, but still not as good as the 214 was. The other gripe is no illuminated ring on the ignition unit. A real nuisance for these dark evenings.