Here's the list of approved vehicles- and only those on the list. A BMW 3 series with 4 doors would likely qualify as a sedan manufactured by BMW (I have a 1988 325ix which is still eating road for breakfast- love it)
(A)a sedan, crossover, or sport utility vehicle manufactured by: Acura, Audi,
Bentley, BMW, Cadillac, Ferrari, Infiniti, Jaguar, Lexus, Lincoln, Maserati,
Mercedes-Benz, Porsche, or Rolls Royce; or
(B) one of the following: Chrysler 300, Hyundai Equus, Saab 9-5, Chevrolet
Suburban, Chevrolet Tahoe, Ford Excursion, Ford Expedition, GMC Yukon,
Hummer (all models, excluding sport utility truck version).