MADRID, Sept 13 (Reuters) - ⁠Carlos Sainz will start the Spanish Grand Prix ⁠20th on the grid on his home turf ‌after receiving a three-place penalty for impeding Cadillac's Valtteri Bottas in Saturday's qualifying session.

The 32-year-old Williams driver was penalised for impeding Bottas ​through Turns 6 and 7 during ⁠the first phase of ⁠qualifying.

"The team failed to inform the driver of Car 55 ⁠about ‌Car 77 closing in on a flying lap and the driver did not take ⁠any action to make way for the incoming ​car," the ‌FIA said in a statement. "The Stewards determine that Car ⁠55 unnecessarily ​impeded Car 77."

The penalty drops Sainz to 20th on the grid and moves fellow Spaniard Fernando Alonso of Aston ⁠Martin, Cadillac's Sergio Perez and Bottas ​up one place each for Sunday's 57-lap race, the first Formula One grand prix to be held at the ⁠Madring.

Sainz, a former Ferrari driver and four-time race winner, has endured a frustrating campaign and lies 16th in the drivers' championship with six points. Williams are ​ninth in the 11-team constructors' standings.

Formula ⁠One champion Lando Norris secured pole position for McLaren with ​a superb final lap at ‌the Madring, beating Mercedes championship ​leader Kimi Antonelli by 0.011 seconds.

(Reporting by Pearl Josephine Nazare in Bengaluru; Editing by Thomas Derpinghaus)