In the second half of the top 20 we see the Golf GTE climb to #13 and the Hyundai Ioniq Electric reach #18.

But the real news is the Streetscooter Work delivery van joining the top 20, having 910 units registered last month. That’s despite being sold in only two markets (Germany and the Netherlands). It is already the best selling model in its category, and it knocked the Nissan e-NV200 off the top 20 list. Is the DHL-owned company starting to be disruptive in the delivery van class?

https://cleantechnica.com/2017/12/05/vw-e-golf-shines-streetscooter-work-breaks-top-20-europe-electric-car-sales-report/

I thought they only made 150 demonstrators in 2017.  That said, they appear to have sold vans not yet manufactured ??

https://www.treehugger.com/cars/one-europes-top-selling-electric-cars-actually-delivery-van.html