I've tested the Spark 1.4. Economy in stop and go isn't near what the Mirage 1.2 CVT can do. The Spark is much nicer to drive, though.
I don't mourn the loss of the 1.2. That wasn't a great engine. The S-TEC was simply an old Suzuki design built up and stretched way too far. The engines were thrashy, not very powerful and not as economical as the Suzuki mills they were based on. And did I mention thrashy? They sounded like they wanted to eat their guts every time you revved them past 4k rpm.
Too bad GM doesn't pull from the Suzuki stables anymore. Suzuki's current 1.4 is a sweet motor with decent economy for its size.
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