Board Thread:Game Discussion/@comment-81.104.120.208-20180823153447/@comment-32019651-20180823180902

Please step back from the ledge! It's going to be okay...

Tiers 1-5 of EL only feature the 2014 LMP cars.

Tiers 6-15 of EL only feature the 2015 LMP cars.

So you cannot complete EL without using a 2014 AND a 2015 car. However, EL is fully unlocked for me, so it looks like you don't need a '14 car to reach the tier 15 10-lapper.