7/10 for me.The CGI is awesome.Most of the fight scene are awesome.

The problems are:
-Too many pointless scenes at the beginning.
-No introduction for Jolt and Sideswipe.Sideswipe is one of my favourite new chracter.Cant see him much.
-Sideways and Devastator just die like that.No introduction for Grindor or Constructicons.
-Jolt didnt even say a word or see him killing anything.So Jolt is there to promote Chevy Volt????
-Feels too rushed in the end
-Plot holes are everywhere.

When last movie was out, I have a more serious suggestion

Optimus Prime - transformed into a Hicom Perkasa MTB 150 DXL Super Commando (our largest national truck)
Ironhide - transformed into a Proton Arena (our local pickup)
Ratchet - transformed into a Proton Juara (Bulan Sabit Merah Style)
Jazz - transformed into Lotus Elise (Proton Putra is another choice but not so good looking for Jazz)
Bumblebee - transformed into an old Proton Satria initially before evolving into Proton Satria Neo GTi Concept

now with new characters added:

Sideswipe - could transform into a Lotus Europa-S (or same car with the Proton Ultimate Concept as name?)
Arcee - 3 modenas or naza motors
Twins - Myvi SE and Zerokit Savvy (or a smaller choice is Kelisa and Kancil)
Jolt - I dono, Gen2 perhaps??
Jetfire - we have a national plane, remember? The Eagle Aircraft 150B