Volvo V40 Forums banner


  1. Performance tuning to reduce emissions / increase efficiency

    Volvo V40 General Discussion
    Hello, I recently bought a 2014 D2 Crosscountry Lux (automatic). I am very happy with it. I have seen several options mentioned on this forum, such as polestar or other performance tuning. Do I correctly understand that these performance improvements increase fuel consumption? If not, then...