Earlier quoted context omitted.
Recent winners of Le Mans have been powered by diesel engines. I went 3 years ago and it was very strange - the diesel power LMP1 cars were almost inaudibly quiet compared to the petrol powered cars. Almost like they were floating round the track - most surreal. Diesel engines have advanced incredibly in the last 15 years.
(Yeah the new Audi's are incredible!) And they were trying everything to cut the balls of them, weren't they? The Diesels aren't banned but they restricted their fuel-tank size. They also have to refuel slower than non-diesels (not by design but by regulation) and they have a new +30kg weight increase restriction just for diesels. There might be more. I suppose its not a bad thing to try to equalize the cars for raci…
So do I. Did you forget to include some link you intended to include?