Seeing as there is no information on replacement keys, I am going to ask the question.

What is the operating MHZ for the 2015 range rover sport? Does it differ from other makes and models or is it set by countries etc?

433mhz?
315mhz?

Looking at getting an extra key for emergencies and going aftermarket via online shop.

Can get the whole unit with chip and blank key for about $35aud. But it gives 2 options to choose and not sure which.

Once a replacement key is sorted, is there a cheap and easy way, not locksmith, to DIY programming? Buying scan and diagnostics tools, I notice some of the threads on here are outdated and using this to get updated information.