2017 Discovery known issues?
 

Hey everyone. Thinking about buying my friends 2017 Rover Disco HSE Si6. He bought it new and it has 74k on it. He's had all the maintenance done on time and replaced the water pump, alternator and serp and supercharger belts. What should I be thinking of in terms of preventative work at this point? Thanks very much!

Front and rear cross over pipes would be good to consider changing as well. They are a known failure point on the SCV6 which this is the same engine. I would also change the idler pulleys as there have been reports of the bearings failing. Finally check the radiator. It can leak towards the bottom of the unit.
On my 17 when I brought it home last year I pulled the water pump, thermostat, f/r cross over pipes, super charger, and radiator just to make sure of their state and replace. I had developed a slight coolant leak on the 4 hour drive home ( no D5s where available with the towing package in the area I live) that lead me to mistrust the previous work done on it.

Windshield leaks.