I have driven down to 'E' on more than one occasion, electronics showing '31 miles' to empty. Drives the CEO crazy if she is in the co-pilot seat. Since changing the plugs, I'm getting 20.5+ mpg [calculated manually] in mixed Atlanta commuter driving, usually on Kroger premium gas, so I'm well over 400m per tank. Best tank ever was 24+ on a late Fall highway run to SC and back ..... worst, towing a horse trailer back uphill from Florida, was closer to 15 .....

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2006 X5 3.0 6-spd w/Evo UUC ssk
sport/premium pkgs
born Valentine's Day, 2006.