Lexus is widely expected to unveil its next-generation IS sedan in the relatively near future. Hopefully, a high-powered IS F variant is also part of the mix. We'll see. In the meantime, there's been plenty of speculation regarding what will be under the sedan's hood. The Japanese language Best Car now claims Toyota wants to use the new Supra's turbocharged twin-scroll 3.0-liter inline-six engine for that purpose. It produces a total of 335 hp and 365 lb-ft of torque, which would be more than adequate for a sedan like the IS.

Thing is, Toyota didn't build that engine. Neither did Lexus. BMW did, and the IS just so happens to directly compete against the 3 Series.