human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Model, Years, Engine code, Power, Torque
###Question: What years did the sdrive16d model have a Torque of n·m (lb·ft)@1750-3000?
gpt
SELECT Years FROM table WHERE Torque = n·m (lb·ft)@1750-3000 AND Model = sdrive16d