Talk:McLaren 650S GT3/@comment-122.52.75.114-20171102063951/@comment-237174-20171102093100

Without spending lots of time grinding for credits or money on in-app purchases, your chance of finishing the R&D is very low.

However, you should still participate in it as you get rewards for every R&D challenge you complete. Your main focus as a new player should be to work on getting as many stars in Career races as you can and, as Sonicaze mentioned, earning more credits and tokens to get vehicles that will help you progress in Career.

Gameloft has a habit of reviving R&Ds, so even if this R&D ends, there's always a chance that it will be revived in the future, and since the GT3 is assembled via blueprints, it may be possible for you to get it post-R&D by opening Super Racer Kit Boxes, each worth 18,000 credits, every 8 hours.