This is one place that sales have reacted to the new fuel consumption and emissions standards (WLTP) to an extreme degree. Sales are up 33.3% for the year so far but were down a whopping 73.4% in September! For example Audi sales were down 92.6% for the month with just 19 units sold. It will be interesting to see how long it takes for sales to return to a more normal pattern.
Below the % column is market share and the +/- is shift in that share, comparing the first nine months of 2018 with the full 2017 year. Below green shows market share gain and yellow a drop.
Renault sales were up 65% for the year and that translated into an 18% growth in market share. Nissan was up 90% and expanded by 32% when it came to its share of the pie. Mercedes Benz managed to lose 16% when looking at its share, but still gained 14% in sales, showing how in a boom in sales you need to do better than a slight sales gain.