ハンス＝ヨアヒム・スタック
A one-off version known as the X5 LM was equipped with the P75 engine based on the S70/3 V12 engine from the 1999 Le Mans winning BMW V12 LMR. It was used by Hans-Joachim Stuck to set a lap record at the Nürburgring in 2000.