Ok. That helps. If the gap is wider near the bottom the door is low on the latch side.
With the door open about half way pull up and down on it to see if there is play in the hinges. This could indicate a faulty hinge or missing bushing. If there is no noticeable slop then hinges are not defective but may be out of adjustment. To check this close the door until latch begins to contact the striker on the door frame B-pillar. You should be able to eyeball it to see if the striker engages the latch slot in center or if it's riding/contacting the slot on top or bottom. Push door closed slowly with your hand holding the outer handle up so it can't latch shut. Open and close the door a few times while not letting it latch and try to determine if the door is being pulled/forced down by the striker as the door closes.
If the striker is not causing the problem the top door hinge will need to be adjusted. In this case I would go back and force dealer action.
If the striker is pulling the door down when it closes here's what you do... Open door fully, take a pencil and trace a line around striker plate on B-pillar (for reference), loosen the screws in striker plate but do not remove them. Just loosen a turn or two. Now you can move the striker plate around a bit on the B-pillar without it falling off. If it doesn't move at first just give it a tap with hammer or some weighty tool. You're gonna want to go up in this case so using your pencil line as reference tap/move striker plate up about 1/8 inch keeping it between pencil lines left to right. Tighten screws to hold striker plate in place. Now try the door. You can repeat this process moving striker in small increments until a uniform gap is achieved at door edge then tighten striker sufficiently to hold it for good. This should take care of the issue.
If you don't want to tackle the job or if you suspect a hinge issue then return to dealership, find the service manager, point out the inconsistent gap and ask for it to be adjusted. (don't mention it's hard to close as this is hard to quantify and easily denied) Adjustment is a specific warranty category that is your right for the first year of ownership.
Will weld for beer.
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View my fuel log 2014 Mirage SE 1.2 automatic: 45.3 mpg (US) ... 19.3 km/L ... 5.2 L/100 km ... 54.5 mpg (Imp)