My 2016 D4 is coming up to 15 months old and I average about 25,000 km per year. I took out the extra 2 year warranty when I bought the vehicle new and it cost me around $3,000 for memory.
I guess my take on it was if there happened to be an expensive break down ( not wear and tear ) - I'm covered. also I can sell and up grade the vehicle at 4.5 years old with 6 months warranty left. Also I have seen and heard of a number of repairs required on D4's that cost well and truly in excess of $3,000. So whether my D4 fails or not, its a numbers game and I guess its whether you want to take the risk or not.
p.s. This D4 is my first LR and unfortunately in the past I'd heard a lot of horror stories about failures, electrical faults and how expensive they can be to repair. The old saying - insurance is a waste of money until you need it.

