Table: mercedes_w123_engine_specs
Columns: chassis_code
years
model
engine
power
torque

Question: What are the years for the 250 model?
SQL: SELECT "years" FROM mercedes_w123_engine_specs WHERE "model" = '250'

Question: What is the power of the Chassis code w123.130?
SQL: SELECT "power" FROM mercedes_w123_engine_specs WHERE "chassis_code" = 'w123.130'

Question: What Engine does the w123.026 chassis have?
SQL: SELECT "engine" FROM mercedes_w123_engine_specs WHERE "chassis_code" = 'w123.026'

Question: What Chassis code has a 200d model and a Power of ps (kw; hp) @ 4200?
SQL: SELECT "chassis_code" FROM mercedes_w123_engine_specs WHERE "power" = 'ps (kw; hp) @ 4200' AND "model" = '200d'