GM’s reasoning for not offering three pedals and a stick in the new mid-engine sports car is simple: the low demand simply did not justify the time and expense required to engineer and certify it.
It wasn’t so much GM that was unwilling to produce a manual Corvette C8, but rather it could not find a supplier who was willing to work with it to develop one that would be sold in such low numbers, Corvette chief engineer Tadge Juechter said.
“We couldn’t find anybody honestly who’d be willing to do it. Because just like the automatic, the DCT, it would have to be a bespoke manual,” he told Motor Authority. “It’s low volume, very expensive. The reason is it’s a low-volume industry. That industry is dying—building manual transmissions.”
Roughly 15 percent of new Corvettes are ordered with a manual and that number is going down rapidly, Juechter added.
The 2020 Corvette Stingray is offered with an eight-speed dual-clutch automatic developed by Tremec. It was developed specifically for the Corvette C8 and its tight rear dimensions, which are made even more compact by the low-mounted dry sump system. Versions of this transmission will likely serve in all coming model variants of the mid-engine sports car, including more powerful Z06 or ZR1 variants.
The majority of mid-engine vehicles on sale today feature automatic or dual-clutch automatic transmissions, including the Ferrari 488, Audi R8, Lamborghini Huracan, Acura NSX and McLaren 570S and 720S. Porsche is one of the only major sports car manufacturers that still offers a manual, with the Cayman, Boxster and 911 all offering one.
Source: Motor Authority