Below is a list of light bulb types used in 2016- MERCEDES-BENZ E-CLASS lighting system, covering estate and saloon 4-door vehicles.
Headlight bulb: low beam - H7 / high beam - H7
Front indicator/turn signal bulb: PY21W
Rear indicator/turn signal bulb: W16W
Back-up light bulb: P21W
Light bulb sizes for other MERCEDES-BENZ E-CLASS generations: E-CLASS (w210) / E-CLASS (w211) / E-CLASS (w212)