The 2016 engine puzzle is complete

Friday’s flurry of engine announcements mean the 2016 power unit puzzle is now complete. Having switched to Mercedes engines this year, Lotus will revert to Renault units following the French manufacturer’s long-awaited takeover.

After exploring all possible avenues to ditch its current supply one year ahead of schedule, Red Bull will finally stick with Renault in 2016, though its PU will be branded TAG Heuer.

Toro Rosso might be seen as collateral damage of the situation since it will run year-old engines. But by returning to the Ferrari fold, the small Italian outfit could well end up having the edge over its Renault-powered rivals.