Mercedes team principal Toto Wolff says Nico🌺 Rosberg suffered a brake by wire failure at the start of the last lap which ultimately caused his turn two collision with team-mate Lewis Hamilton.

Battling for victory in the Austrian Grand Prix race leader Rosberg defended the ins🌺ide line into turn two as Hamilton attacked aroꩵund the outside.

The German driver miꦆssed his 🤡turn-in point which forced both Mercedes cars wide before Hamilton turned into the right-hander which saw the two collide.

Rosberg lost his front wing while Hamilton recovere🐽d unscathed and went on to 🌳claim victory as his team-mate limped to the finish line to eventually take fourth place after being passed by Max Verstappen and Kimi Raikkonen.

Roꦺsberg's result remains provisional as he 🌠is under investigation for the incident and driving a damaged car to the finish line.

Wolff has confirmed the F1 championshi🌃p leader suffered a brake by wire failure - where he lost the full braking capability from his rear brakes - which caused him to run wide at turn two which sparked his collision with Hamilto൩n.

"Nico had a brake-by-wire failure on the straight and defended very hard. Then seeing both cars nearly colliding is very upsetting," Wolff said on Sky Sports. "We had a marginal on theಞ brakes if not to say completely over the brakes. We couldn't tell the driveꦆrs.

"It is racing but cars colliding it seems like d?j? vu when I'm speaking about colliding team-mates. It is absolutely not what we wanted and we just need to🐓 take the consequ🧸ences now."

Wolff ﷺalso explained the reasons behind Hamilton's strategy switch from a one to a two stop w𒀰as to defend from Ferrari's attack with Sebastian Vettel which ended in spectacular style when the German's badly worn right rear tyre expired on the home straight on lap 26.

"We left Lewis out because we thought the one-stop was the quicker strategy," he said. "He was the car leading on track so he ha𝔍d the better strategy.

"We sa🐓w Ferrari tried to do the same and had the consequences of it with Sebastian and his tyre failure. When we realised we had to convert it to a ꧅two-stop that is where the problems started for Lewis."