Citroen DS3 2017 citroen ds ds3 convertible

Engine management light came on and warning message states that there is a engine fault have repaired immediately
Smell of strong ammonia from engine air vents and exhaust system
Baills of white smoke from exhaust pipe
Its 1.6 diesel engine which has to run with ad blue for the emmunisions etc been advised that there’s a faulty system somewhere to do with the ad blue passing through now iv only had car since Jan 2022 and iv already put 20ltr ad blue to it as they come in 10 ltr bottles
Gear stick is very loose
Electrics eg speakers crackle as car switches on
Eco system sometimes doesn’t switch on
Since car received outside my home theres a black patch on ground where car sits overnight