McLaren did a fantastic job adjusting their chassis to completely different Renault power unit architecture over a very limited period of time and they believe that they would be in trouble if they made their decision latter than they did.

The 2017 Renault F1 engine gained one second compared to the same period last year, although they initially expected almost much less gains with their new concept.

Listen the fantastic sound of Mercedes F1 V10 engines from 2000 and 2001 Formula 1 season

Fernando Alonso and Stoffel Vandoorne have together received 70 penalty places at the start of Azerbaijan GP after Honda introduced new elements of their problematic Honda RA617H power unit.

Honda tried their third engine specification that brings additional performance and has shown encouraging results, but will not use it for the rest of the weekend.

Sergio Perez said that Mercedes' engine power is currently only ahead of Honda and that Renault is 'more or less there'. But of course, that is not true. And here is why.

Chinese GP 2005. was the last race of the championship which decided constructors' championship battle between Renault and McLaren and was the last race for V10 engines

Power unit formula was introduced in 2014. and consists of six separate elements and four of each are avalaible to each driver per season before they get grid penalties