These lights are not compatible with the MB SLK R171 because that model requires lights with screw holes (which are also sold on AliExpress),and the design of these lights is also different. It's impossible to modify them to fit. It was my error, I didn't verify compatibility before buying. Because of this, I'm rating them 3 out of 5 stars. Nevertheless, the store provided excellent service and very quick delivery!

Alright