Models also known as Trim Levels, are used to identify a vehicle's level of equipment or special features.
It has multiple safety features such as sounding beeps if you veer off the road or if you are attempting to change lanes and another vehicle is too close. It also automatically places the vehicle in park when a door is opened. This is optimal.
If you are driving fast and need to open the vehicle doors for instance to register regurgitate or immediately toss something out, you will feel a jerk due to the abrupt stop based on how fast you are driving. This may result in you hitting your head on the steering wheel.
The 2015 Mercedes-Benz E-Class has an average owner rating of 4.62 out of 5 which ranks it #6 of 21 other Luxury Midsize Cars.
From the Vehicle History blog
Overall
Front
Rollover
Side
Moderate Overlap Front
Side
Roof Strength
Driver-side Overlap Front