The base engine for the new Cadillac ATS will be a 2.5L naturally aspirated four-pot, but that's not the big news of the day. The two upgrade options will be a 270 horse 2.0L turbo unit and the 318 horse V6 from the CTS. Both sound like excellent options with which to target the BMW 3-series. Now we're just left wondering about an ATS-V.

[via GM]

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