Sainz: Lack of engine gains key to Renault’s poor form

The French car manufacturer had been a regular contender at the front of the midfield pack during the first half of the season, but has fallen away in recent races as other teams’ developments have pushed them on. But while some of Renault's struggles are down to the car itself, Sainz thinks that not having introduced an engine upgrade in the second half of the year has hurt. Renault ... ... Keep reading