The price range for the BMW 730iL varies based on the trim level you choose. Starting at $7,370 and going to $10,450 for the latest year the model was manufactured. The model range is available in the following body types starting from the engine/transmission specs shown below.
FEW 7 Series BMW have been converted to LPG, so there's little experience in the industry. It could be an expensive conversion and probably not worth doing.
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The BMW 730iL is available in a number of variants and body types that are powered by PULP fuel type(s). It has an estimated fuel consumption starting from 13.5L/100km for Sedan