What is the fine-grained topic of the following text: Last year they revealed sales have topped three and a half million .Dacia sales were up 10 per cent in 2015 to 26,228 vehicles in the UK and, for the first time ever, the Sandero finished in the top 10 best sellers in Scotland. Only return the topic.
Dacia's increased sales and popularity in the UK and Scotland in 2015.