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The available engine options for the Z4 are:
- 3.0L
- 2.5L
- 3.2L (M)
- 3.0L si model (255HP) AT
- 3.0L si model (255HP) MT
- 3.0L i model (215HP) AT
- 3.0L i model (215HP) MT
- (Rdstr) sDrive35i (3.0L, twin turbo)
- (Rdstr) sDrive30i (3.0L) AT
- (Rdstr) sDrive30i (3.0L) MT
- M.T. 3.0L w/o SMG
- M.T. 3.0L SMG (sequential man gearbox)
- M.T. 2.5L w/o SMG
- M.T. 2.5L SMG (sequential man gearbox)
- A.T. 3.0L
- A.T. 2.5L
- M.T. (6 spd) 3.2L (M)
- M.T. (6 spd) 3.0L si model (255HP)
- M.T. (6 spd) 3.0L i model (215HP) from 5/06
- M.T. (6 spd) 3.0L i model (215HP) thru 4/06
- A.T. (3.0L, 6 spd) si model (255HP)
- A.T. (3.0L, 6 spd) i model (215HP)
- M.T. (6 spd) 3.0L i model (215HP)
- M.T. (Rdstr, 6 spd) sDrive35i
- M.T. (Rdstr, 6 spd) sDrive30i
- A.T. (Rdstr) sDrive35i (7 spd)
- A.T. (Rdstr) sDrive30i (6 spd)

