Yes. the Curt Trailer Hitch Receiver - Custom Fit - Class I - 1-1/4" # C11449 is the correct fit for your 2018 Mitsubishi Mirage G4. I've attached a photo for reference, but this hitch is confirmed to fit 2017 to 2019 Mirage G4 models. If you will be using the hitch for a bike rack or other accessory, use of the stabilization strap # 18050 is required so you don't void the manufacturer warranty.
Class I hitches will limit you to Class I rated bike racks, so I have also linked a page... view full answer...
I have a great solution for you. Unfortunately, I confirmed with Thule that the OutWay Platform 2 is not compatible with your 2018 Mitsubishi Mirage G4 Sedan. With that being said, the only option we carry for a trunk rack option for your vehicle is the SeaSucker Komodo Trunk Bike Rack - Fork Mount - Vacuum Cup Mounted - Black # 298-BK1910-BK. The SeaSucker Komodo has the easiest installation process out of any rack we carry on etrailer, and it will hold bikes up to 45 pounds.
A more... view full answer...