Thanks for checking this mod out. It changes the color scheme of the McLaren car, and makes it as fast as the Mercedes.
Things to know:
1. If you skip to the end of the session or fast forward, the AI in the McLaren will have Honda performance, but if you just stay in the garage they will have Mercedes performance. This is why I went with Mercedes performance over Reanault, because if you fast forward during qualifying for example and they don't make it into Q2, they will be able to make places back in the race.
2. It does save career.
3. DO NOT, UNDER ANY CIRCUMSTANCES PLAY ONLINE WITH THIS MOD.
4. This version works with the latest version of the game which as of 12 December 2017 is 1.11. There's no reason not to update to it in case you haven't yet and if you can't it means you're using a pirated version.
5. Thanks to @KHarozIN for letting me modify his Alonso and Vandoorne numbers from his McLaren mod!
6. You can play Time Trial but your times won't be saved to the global leaderboard.
7. This mod changes the name of the McLaren team to McLaren-Renault, but it also changes Red Bull to Aston Martin Red Bull and Williams Racing to Williams Martini Racing, therefore I suggest you also install my Williams Martini mod and @Zarresz Aston Martin Red Bull mod.
8. The numbers of Alonso and Vandoorne are red and they have their names on the Sharkfin. Your number will be white and your name won't be on the sharkfin (see the pics), however you can modify it yourself or send me a PM with your initials, your country and your number and I'll do it for you when I have time.
-Changed color scheme
-Replaced all Honda logos with Renault on the car itself
-Changed the icon on the car selection skin
-Changed the name of the team, as well as Williams and Red bull (see above)
-Changed the icons in the leaderboards in Career mode.
-Alonso and Vandoorne numbers
-Mercedes performance (only when you don't fast forward the time and you don't skip to the end of the session)
-Add any new sponsors McLaren might get in real life
-Change the driver hats
Donations (fully optional)