This is my third Cavalier: I've had an '87 Z-24 (BEST CAR EVER!), '88 wagon, and now a '91 RS Sedan. I have never had any major problems with any of them. These cars are reliable - never afraid to take them anywhere! The radios are awesome with kickin' bass! The mileage has been superb and the comfort and styling of the Cavalier is the best!
I love the Z-24 styling! I am looking for a late 80's Z-24 to have as a collector's vehicle.
Since I don't have a newer Cavalier, it's hard to give "improvements". With the '91 I would have liked to have seen better cup holders and more of them. Standard cruise control and more than an AM/FM stereo - maybe and tape or CD player.