Mudguards - I did it on mine myself, took about 1-1.5 hours, and I took it very slow. If you know how to handle a screwdriver and a wrench, and have a common sense, you are good to go.

BWM is unlikely to install aftermarket halogens in their shop on brand-new car...

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His : 2013 X5 3.5d Deep Sea Blue/Black/Aluminum with ALL packages, 20" 214"s, running boards, Adaptive Drive, Spare Tire, BMW Apps
On Order : 2016 X3 3.5 MSport Silver/Mocha with DHP, CW, Prem, Tech, DA, Lighting

Hers : 2015 328xi MSport Silver/Red

Prior:
2008 X5 4.8
2011 X5 3.5d
2010 335 xDrive
2013 335 xDrive