Changes to the regulations governing engine allowances and the penalties awarded for exceeding those numbers have been approved by the World Motor Sport Council during its latest meeting in Mexico City.

The tweaks were proposed by F1's Strategy Group shortly before the British Grand Prix and, having been approved by the F1 Commission, were formally ratified following the meeting of the WMSC. Each will take force with immediate effect ahead of the Hungarian Grand Prix later this month.

As expected, new engine manufacturers entering F1 will now receive an extra power unit for each driver to use throughout grands prix during the season, bringing the total to five, one more than the existing power unit suppliers. This will be applied retrospectively to Honda, which now gains an addition unit over Mercedes, Ferrari and Renault, and will hopefully ease the burden on a manufacturer enduring a torrid return to a category it once dominated with Williams, Lotus and current partner McLaren.

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For those teams exceeding the prescribed limits for engine unit components, the penalty system has now been simplified, with the maximum punishment a driver can receive being 'reduced' to demotion to the back of the grid. This should effectively eliminate the complicated system of consequences that, should the crime have outstripped the simplest demotion, saw drivers variously having to serve drive-thru' and stop-go penalties in the race itself.