Although the 9000 does trace its roots back to the ill-fated 'Group 4' experiment with Lancia and Fiat, it emerged a far more class competitive car than the Thema and Croma. The range was seriously revised in 1991 when the suspension was revised, the chassis was made stiffer and anti lock brakes and catalytic converters were fitted to all models. The saloon and the hatch versions were now badged differently, the four-door cars being badged 9000CD and the five-door versions 9000CS.
A sporty S model made a brief appearance in 1991, ending production in 1992. With alloy wheels, an electric sunroof, leather trim and walnut dash it now makes a good buy for the committed 9000 watcher. CSE models replaced the S.
Ecopower engines debuted in 1992. These were turbocharged versions of the 2.0-litre and 2.3-litre units using a light pressure turbo to improve efficiency and driveability. For once the focus wasn't on big numbers. Don't confuse a 2.3-litre light pressure turbo - badged Eco or Eco E - with the full-blown 2.3-litre Turbo model).
In 1993, the Carlsson was replaced by an Aero model with a slightly different look but much the same performance formula. After General Motors took control of the Trollhattan Company, the 24-valve V6 from the Vauxhall Omega was installed in top models in 1994. Twin airbags, reach adjustable steering columns and colour keyed bumpers subsequently made a relatively late appearance in the 9000CS range.
In 1997, the saloon CD models were replaced by the all-new 9-5. The five-door CS continued, however, with Anniversary models appearing in 1997, but was itself deleted at the end of 1998, Saab deciding that the market for five-door executive hatches was too small to be worth pursuing.