[0Camus0]

Hello,

So, I can't find a true answer to this. What is the B58 engine used in the 2021 Supra? because apparently, it has 10.2:1 compression ratio, it has 6 exhaust ports (compared to the 2020 Supra with 2 exhaust ports and 11:1 compression ratio).

It seems is the same engine used in the Z4 M40i, M340i and G40 M240i, except, everywhere I read, that this specific engine has 11:1 compression ratio, so which is it?

Is the 2021+ Supra using a variant version with 10.2:1 compression ratio which is exclusively used for the Supra?

Thanks

[RockCrusher]

This may be of some help in answering your question:

https://en.wikipedia.org/wiki/BMW_B58

[Mollyran]

By BMW press:

G40 M240i 10.2:1

Z4 M40i 11:1

[inevitab1e]

Originally Posted by Mollyran

By BMW press:

G40 M240i 10.2:1

Z4 M40i 11:1

I believe that's the EU spec Z4. The US spec Z4 has same engine as G42.