I’ve had drivers lock the keys in mirages a bunch of times. Only way I can figure it happened was they hit the lock button on the key before putting it in the ignition as it’s impossible to lock the door while it’s open and the key all the way in the ignition.
On most imports I’ve had you had to lock the door normally and lift the outer door handle while closing it otherwise it’d unlock.
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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)