The fuel economy savings with the TTV6 will likely be more significant if you consider that the 2023 Sequoia has that engine and they’re quoting 21/24 mpg. That’s for a much heavier vehicle than the GX460.
I’m also interested in how the hybrid aspect helps overcome turbo-lag off-the-line with the electric motor. In a side by side testride comparing the ‘22 Sequoia (4.6 V8) to the ‘23 Sequoia (TTV6), they noticed the TTV6 was more responsive off-the-line.
I haven’t seen anything on a breakdown between the engine power vs the motor power. They only quote the total, which is impressive.
I’m also wondering if they’re considering the TTV6 for the Toyota 4Runner. But if they did not put it in the 4Runner, that would be consistent with them (unfortunately) not putting the 4.6 V8 in the 4Runner back when they came out with it on the Lexus GX 460.