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The available engine options for the Xterra are:
- A.T. (4.0L, 6 cyl, 5 spd) 4x4
- A.T. (4.0L, 6 cyl, 5 spd) 4x2
- M.T. 6 cyl 4x4
- M.T. 6 cyl 4x2
- M.T. 4 cyl (4x2)
- (4.0L, VIN A, 4th digit, VQ40DE)
- 3.3L (VIN E, 4th digit, VG33E)
- 2.4L (VIN D, 4th digit, KA24DE) exc. Calif 4x4
- 2.4L (VIN D, 4th digit, KA24DE) exc. Calif 4x2
- 2.4L (VIN D, 4th digit, KA24DE) Calif 4x4
- 2.4L (VIN D, 4th digit, KA24DE) Calif 4x2
- 2.4L (VIN D, 4th digit, KA24DE)
- 3.3L VIN M, 4th digit, (SuperCharged)
- 3.3L VIN E, 4th digit
- A.T. (6 cyl) 4x4
- A.T. (6 cyl) 4x2
- A.T. (6 cyl) exc. SuperCharged 4x4
- A.T. (6 cyl) exc. SuperCharged 4x2
- A.T. (6 cyl) SuperCharged 4x4
- A.T. (6 cyl) SuperCharged 4x2
- M.T. 6 cyl exc. SuperCharged 4x4
- M.T. 6 cyl exc. SuperCharged 4x2
- M.T. 6 cyl SuperCharged 4x4
- M.T. 6 cyl SuperCharged 4x2
- M.T. (4.0L, 6 cyl, 6 spd) 4x4
- M.T. (4.0L, 6 cyl, 6 spd) 4x2
- A.T. (4.0L, 6 cyl, 5 spd) 4x4 from 10/08
- A.T. (4.0L, 6 cyl, 5 spd) 4x4 thru 9/08
- A.T. (4.0L, 6 cyl, 5 spd) 4x2 from 10/08
- A.T. (4.0L, 6 cyl, 5 spd) 4x2 thru 9/08

