For every vehicle including MINI Cooper marker lights are very important. As far as the bulb is 5 W in power and has the base W2.1x9.5D, you may use it in your vehicle. Remember by changing bulbs that only 12 V voltage lights are used in 2003 produced cars. Actually, MINI recommends to use only original Cooper bulbs while changing. Markers in 1.6 volume cars having motor model number W10B16A are economical and effective. You won’t get normal work of markers in MINI Cooper 1.4 with other types of lamps.
It’s usually hard for MINI’s cars to install lamps with no skills, especially in 2012 Cooper. It might be hard to find W2.1x9.5d type of lamp with 5 W of power and exact voltage of 12 V. The truth is though that vehicles with motor code W10B16A and engine capacity of 1.6 wouldn’t work with other lamp types. So, only high grade bulbs for 2010 MINI Cooper can suit your car.