Welcome! What year is your car and how many miles are on it?
It’s hard to say if that’s normal or a sign of valve body or issues starting. If rpm bounces while keeping a steady speed and throttle then there might be an issue starting. It never hurts to drop the fluid and refill with new stuff. It’s easy to do. If the shift indicator on the cluster starts flashing then you’ll have a cvt code stored.
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View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)