The FIA has confirmed Mercedes' Spa engine update will not be subject to stricter oil burn regulations set to come into force from the Italian Grand Prix onwards.
In an attempt to clamp down on teams burning oil for performance gains, all new engines introduced from the Italian Grand Prix onwards will be limited to oil consumption of less than 0.9 litres per 100km. But because it introduced its fourth and final engine update ahead of the Italian Grand Prix, Mercedes' latest spec of engine will still be subject to the previous consumption limit of 1.2 litres per 100km and can continue to run legally at that level for the rest of the year.