I find most cars of the 1990s to be tediously dull. Vastly superior in terms of reliability and safety than the cars they replace but utterly devoid of anything interesting.
Granted, some excellent stuff did come out of Japan and it produced one of my favourite Ferraris, the 355, but most the mention of "1990s" with regards to cars makes me think of the Mk3 Astra, Rover 200, Ford Mundano and the K11 Nissan Micra...
Although that may be in part due to the fact the 1990s aren't yet tinted with nostalgia for the most part, I don't really consider it to have a proper identity as a decade yet. Also the fact the cars were all pretty reliable and well built means they never get to the "so bad it becomes amusing in it's own right". I was looking at some cheap 80's Corolla or Datsun on eBay a while back and it was suggested the sheer lack of any interesting features would in itself be so typical of the average Japanese family car of the mid 1980s it would go full circle and become interesting as an ode to dullness.
But then again, I don't like cars for normal reasons. My Corsa would outperform the Yaris it replaced in every way yet I found the 'Yota far more entertaining because of it. The Triumphs grip the road like a block of soap on an ice sheet, the 1300 has a 0-60 time measured on a calendar and the gearstick throw between 3rd and 4th gear is the size of Belgium yet when given the choice between driving one of them or the Corsa they'd win out every time...
I also think this is also a cultural thing, Europe never had the huge safety/emissions deal that the US had that managed to destroy most domestic 1970s and early 80s cars. For the 90s the madness of the hot hatch got mellowed down, rwd died out, cars started getting fatter and growing in size/weight, the SUV and people carrier suddenly became a thing. If one thing was in their favour I'd say I'd rather have a 90s car than a newer one as they tend to be lighter and prettier and there is no doubt they are more reliable and drive better than their predecessors, I just don't find them interesting.