Only 1 in 4 had ASR through production in the US. Many northern MB dealers ordered a WINTER package that included ASR, but it wasn't standard equiptment. The option number for ASR is 471.

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MERCEDES BENZ MASTER GUILD TECHNICIAN (6 TIMES)
ASE MASTER TECHNICIAN
27 YEARS DEALER M.B. Shopforeman
190E 2.3 16V ITS SCCA racecar