NISSAN

What you can trade in: Any diesel car with Euro 4 or older emissionsstandards,ownedby you for at least six months Eligiblenewvehiclesanddiscount: Any Euro 6-compliant diesel, plug-in hybrid models - £2,000; Smart Electric Drive £1,000 Runs until: December 31, 2017 What happens to your car: Euro 3 and older scrapped, others treated as regular trade-in The offer: Up £2,000 off selectednissancars,plusthetrade-in value of your old vehicle What you can trade in: Any car or light commercial vehicle with Euro 4 or older emissions standards, registered before