History of the diesel car and considerably lighter than the in-line six-cylinder it also replaced, this 3.0L V-6 produces 165 kW (224 hp) at 3,800 rpm and max torque of 510 Nm (376 ft·lbf) at 1,600-2,800 rpm and makes use of a four-valve head. Additionally, fitment of Mercedes-Benz BlueTec system, a concert of emissions control strategies, renders this new diesel 50-state legal in the U.S. beginning in 2008 (stringent NOx limits have made U.S. passenger-car diesels unpopular or impossible in parts of the U.S. in recent years). In 2006, the new Audi R10 TDI LMP1 entered by Joest Racing became the first diesel-engined car to
London to Brighton Veteran Car Run Challenge, following the same route as the veteran car run, but starting in Brighton and finishing at Regent Street, London – and taking place of the day prior to the veteran run. The event is intended to showcase low energy impact vehicles of various technologies – Electric, Hybrid and Low-Emission ICE (Internal Combustion Engine). Participants compete to minimise energy consumption using "road legal" vehicles in "real world" conditions. The results of the inaugural 2010 event showed that the electric vehicles used the least energy (0.62 MJ/km on average, or 141 miles per imperial gallon petrol equivalent), compared to the hybrid