The December 2013 models are different from the 2014 BMW three series models in December.

1. Model 13: The maximum power of the engine is kW115. Model 14: The maximum power of the engine is kW135.

2. Model 13: The maximum torque of the engine is N.m250. Model 14: The maximum torque of the engine is N.m300.

3. Model 13: The maximum horsepower of the engine is Ps156. Model 14: The maximum horsepower of the engine is Ps184.