Using 93 Octane, Full tire pressure, and a top notch Air Cleaner.. My Metro Gets 50 + MPG !!! Garage kept buy the one owner "Retired old lady" Never seen a hint of salt. Great car, Convertible, It might have a 1.0 liter Three Cylinder. But she has plenty of get up and go around the winding roads of Watkens Glen. Top speed Clocked at 108 MPH. Not too Shabby.