What is a bit odd is that Bentley is marketing this V8 model as the "sporty" one, despite not being as fast as the W12. In support of the sporty identity, Bentley has endowed the V8 Bentayga with more aggressive looks inside and out with a black grille and unique dual exhaust tips, as well as an optional carbon fiber trim for the interior.
To back up the looks, the Bentley Bentayga V8 also has the option of carbon-ceramic brakes. And they're truly massive with 17.3-inch rotors at the front, and 14.6-inch units in the rear. The front rotors are clamped by 10-piston calipers, too. Bentley claims the front brakes are the largest in the world. The V8 Bentayga also can claim a roughly 100-pound weight advantage compared with the W12, though whether you'll notice that in an SUV that weighs over 5,000 pounds is debatable.
Pricing and availability haven't been announced for the Bentayga V8 yet. We would expect it to arrive at dealers by the end of the year. It will also likely cost less than the W12 model.
Source : https://www.autoblog.com/2018/01/12/bentley-bentayga-v8/220