Hello Mate
I've got one too........
995 kg

2189 pounds

in otherwords it weighs .9774066 of a ton

so.....

Whatever your power output divided .9774066

Ie mine is currently 186 bhp

therefore

186 divided by .9774066

so

my p/w ratio is 190.29951 per ton

So the only every day car that gets near it is.... NONE HaHa

Hope this helps
All the very best
John