INGOLSTADT, GERMANY - After a few earlier attempts were unsuccessful in setting an official record, Jürgen Hohenester, a German racecar driver and automotive tuner, has finally set a new world record for reaching the fastest speed ever recorded running a vehicle on biogas, according to Hohenester Sport.
Powered by a twin-turbo 3.0L V-6 engine that's been converted to run on the compressed gas, the silver Audi A4 sedan was clocked at an impressive 226.55 mph. Previously, the record was held by a Bugatti that was reportedly 20 kph slower.
Amazingly, the car reportedly wasn't even running at full capacity. It seems that this particular powerplant can reliably put out over 800 horsepower, but was dialed back a few notches to around 700 horsepower to keep the all-wheel-drive Audi's transmission from showering the Papenburg, Lower Saxony, race track with a pile of gear-shaped shrapnel. One key reason the powerplant was able to make such prodigious power is because biogas carries an octane rating of over 120, according to Hohenester Sport.