The JL Wrangler improved upon the predecessor JK in virtually all aspects, but one thing that’s light years ahead of the previous gen Wrangler is its automatic transmission. The JL Wrangler uses ZF’s 8 speed automatic transmission (8HP50) which simply blows away the JK’s clunker Mercedes-Benz-made 5 speed automatic transmission (W5A580).
The JL’s 8 speed ZF 8HP transmission has been considered a class leader since its introduction and is now in its 3rd generation (the one in the JL is the 2nd gen version). Wonder why it’s class leading? Engineering Explained gives this great explanation of why the ZF 8HP auto is considered the best in the automotive industry.