For petrol engines we recommend using a fuel with a low sulphur content or sulphur-free fuel, which will help reduce consumption. For most petrol vehicles, standard unleaded (95RON) is fine, however for the GTI and R models we recommend super-unleaded (98RON). For diesel models, we recommend the use of diesel fuel containing up to 7% Biodiesel. Filling station forecourts supply diesel (to the standard EN590), which can contain up to 7% Biodiesel with 93% Fossil fuel.