Two Sedans with more similarities, such as the body structure, starting price, fuel economy, ground shadow size, and maximum occupancy, than differences, like the model year, horsepower, and height. First of all, the 2013 Elantra pulls more horsepower than the 2016 Sentra. Also, the Elantra is slightly shorter than the Sentra. Among similarities are the body structure, starting price, fuel economy, ground shadow size, and maximum occupancy.