The fact that the company needs to move aggressively to meet new 35mpg fuel economy standards will likely mean that higher-volume applications like the Impala go to smaller, lighter platforms instead. The fate of the rumored Alpha compact rear-drive platform is still up in the air at this point. Whether a new Zeta-based Pontiac GTO ever sees the light of day is unknown as well. The 2.9L Cadillac turbodiesel V-6 mated with the two-mode hybrid system would probably get a GTO or Impala in the ballpark of 35mpg. However, that combination would probably be too expensive to get the desired volumes on the Impala and might not appeal to prospective GTO buyers.
[Source: GoAuto via Autoblog]