Howdy Y'all!

[Cobrajet]

Just bought a 2015 Mirage with just 11,236 miles on it. It was a repo.....

I knew it! Your car has remote keyless entry, but the original transmitter keys stayed with the previous owner.

[2015 Floyd]

Don't know, it had a mitsubishi chipped key but no remote. It is a DE model but it does have some options. Love the automatic A/C don't have to worry about switching between heat or cold or fan speed, it does it for you. Has bluetooth, power windows and locks, but no cruise control and no fog lights. How could you tell if it had factory keyless entry?

[Eggman]

How could you tell if it had factory keyless entry?

It does. All 2014 - 2017 models do. Click on the link to download the 2017 Dealer Pricing Guide Summary for the Mirage and refer to the left-hand column for the ES, where you'll see an entry for 'keyless entry with panic alarm' that is included in all trim levels.

You might want to check back with your seller about this. As Cobrajet said, a repossessed car might mean there are a couple of keys out there somewhere that will work on your car.

A Mitsubishi dealer will be able to delete any old remote entry keys and program in some new ones. It'll cost you, though.