I'm getting about 550-600km per tank 75% highway driving and it'll cost me about $70 to fill up with low grade lol. It's not an m62 though, but I think it's pretty good for a 17yr old boat with a v8 haha.
1997 BMW 540i/6 sport
1984 BMW 733i E23: Centra staggered 16" rims, Hartge strut brace, Hartge engine
1994 BMW 740i E32: Sold