How about a Lexus IS. If you want a BMW maybe look at a regular 3er either E36 or E46.
Sport sedans to consider:
Nissan Maxima
Infiniti I30/35
MB C-Class Sport
Saab 9-3 (Viggen)
Saab 9-5 Aero
Audi A4 1.8T
Ford Contour SVT
Acura and Honda as mentioned
Volvo 850R
Eric
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