What is the fuel consumption of a Mercedes-Benz slk230?

I have a '99 R170 SLK and on a run being careful most of the time I got a return of around 32 to the gallon (imperial), around town it's not so good, at around 22, but it depends on the weather a lo, in the winter the consumption is slightly higher due to warm up periods being longer

A friend has the same model as me though and he drives it aggressively and he only get 15

hope this helped

vic