in order from first to current starting in 89:
83 nissan pulsar tc (stolen)
73 holden hq statesman 308 V8! (sold)
78 audi fox (sold)
78 bmw E12 528i (stolen)
95 nissan pulsar (sold)
82 bmw E28 528i (sold)
84 ford laser (sold... real fast)
91 bmw E34 525i (sold)
88 bmw Alpina E32 B11 3.5 (current garage, since 2004)
88 toyota corolla awd (sold)
89 bmw E34 535is (sold)
89 bmw Alpina E34 B10 3.5 (current garage, since 2008)
90 bmw E32 735i (sold)
86 bmw E30 318i (written off)
87 bmw E32 735i
Gattermeier motorsport (current garage, since 2012)
86 bmw E28 535i Zender (sold)
05 bmw E53 x5 4.8is (current garage, since 2014)
88 bmw E30 Baur TC2 cabriolet 325e (current garage, since 2014)
I think that's it, unless I've forgotten anything...