Iotrez,At one time you would definately have required a "standard"bulb,usually a twin filament 5/21W known as a 380.This gave a 5W rear light,then when you pressed the brake,a 21W light showed about four times brighter to show clearly "braking". With modern styling changes,big lamp clusters up the rear pillars,and all cars having rear fog lamps everthing is changing.If you have not sorted out which type you require yet,try consumabulbs.com.These have a super bulb type sorter for all cars.