Hello together, ordered me an Audi A3 Sportback 2.0 Tdi about 1 month ago. Recently I drove past a gas station and saw that the bio diesel is again 10cent cheaper than the normal diesel. At Audi the surcharge costs around 200€ and if I want to drive the car longer, it certainly pays. Do I actually have any disadvantages with a bio diesel engine?. I can then refuel both fuels. Is the consumption higher or insurance or… I still order my car after the order confirmation from Audi or is that not possible anymore? The car had to be built according to Audi-Zentrum KW52. Who can give me any information about it!!!