The VLN is a race series held in Germany each year where the cars speed around the grueling Nurburgring-Nordschleife, a track often nicknamed the ‘Green Hell’ because it’s surrounded by pristine green hills but is also one of the toughest and most intensive of its kind anywhere in the world.
However, soon the Nurburgring will have another reason to be called the Green Hell. The highlight of the VLN is a 24 hours endurance race, which this year kicks off on June 25, and two of the cars competing will be running on 100 percent renewable biofuel.
The cars are the Four Motors prepped Volkswagen Scirocco 2.0 TDI (pictured above) and the Tuning Akademie Audi A4 3.0 TDI quattro.
Both will run on a blended mix of biodiesel--93 percent derived from recycled food products and 7 percent from oil crops. The fuel is manufactured by a company called Neste Oil Corporation based in Finland and is derived from a number of sources including a mix of vegetable oils and waste animal fat.
Initial testing by the race teams has shown that the blended fuel mix produces comparable performance to conventional diesel sourced from fossil fuels dug up from the ground. The Scirocco develops about 237 horsepower from its 2.0-liter TDI turbodiesel engine, while the A4 sports a 3.0-liter TDI turbodiesel and develops 276 horsepower.
Both cars will be competing in the AT class designed for vehicles running on alternative fuels, where they will compete with a number of different entrants including conventional diesels, compressed natural gas powered cars and hybrids.