Prestige & Luxury Cars

We are having problems with the 2017 Land Rover Discovery HSE TD6 we bought in August. It's been back to the shop six times for various reasons, mainly for the infotainment system. We've had the air con try and cook us to death, set to 16 on air con it was coming out at 30+ degrees, we've had problems with the cushioned air suspension, the reverse camera (which goes hand in hand with the infotainment unit), and now when towing our caravan we smelt smoke and the car was hazy inside. We stopped and lifted bonnet and there was smoke from the engine, a Good Samaritan stopped to see if he could help and found oil underneath. We called roadside assistance, they can tell there’s an oil leak, but because of the bash plates etc. can't see where it's coming from. Is this normal for a Land Rover Discovery? Do we have a lemon? And do you have any information on lemon laws?

The 'Megatronics' unit in my 2012 Audi Q3 Quattro recently died and needed replacing at a cost of nearly $6000. I've phoned Audi Australia to discuss my options of which after first conversations aren't very helpful. Can you advise my rights in this situation? It just seems crazy that a premium car with such low km could have such an expensive hardware failure. Surely there's a consumer expectation or statutory warranty given the low km and expensive car?