What's my 981 S worth? Might consider upgrading to GTS in 981 Posted Thursday at 08:00 AM · Report reply 14 hours ago, spook said: Autocar last week rated the BMW M2 Competition above the 718 Cayman mainly on the basis of 6 v 4 cylinders. Let's hope that Porsche has finally got the message about putting 4 cylinder engines in its sports cars. Hmm, I've got a BMW M135i with the ZF8 gearbox. Ok, it's not an M2, but it's a very similar car in terms of it's DNA. It's quick, and capable, but the chassis has nothing on the 718 chassis! I've driven a few 718's and it's an incredible car. I really can't see how the M2 Competition can get anywhere near it.