Premium 91+
About 9 imperial gallons.
13.5 gallons
Most BMW Cars Take Unleaded Or For Some Special Ones Diesel.
93
Unleaded, with as higher octane as possible (but obviously not race fuel).
To reset the brake warning light on a 2008 BMW 528, first ensure the parking brake is disengaged. Turn the ignition on without starting the engine, and then press the gas pedal three times while simultaneously pressing the brake pedal. This should reset the brake system warning. If the light persists, it may indicate an issue that requires professional diagnosis.
I have a 1997 BMW 840Ci which I have had converted to Gas/LPG. I can't tell you what the MPG is as, whilst it's cold it runs on Petrol and when the engine's warm, will switch to Gas. I can tell you though that, at the current price of LPG (approx 48p), it costs me around £35 for 200 miles. Work out what you can from that. Cheers.
Grade 93+, your manual should have this info.
It will run best on premium.
Premium (91) is recommended
manufacturer recommends using 93 premium gas only.
The 2007 BMW X5 is a gas-powered vehicle.