In Europe the most like for like Hyundai is the i10.
https://en.wikipedia.org/wiki/Hyundai_i10
It got the 3 cyl 1.0 kappa engine- with vvt - in 2013.
However, the real world fuel economy is poor compared to the 1.0 Mirage.
Mitsubishi Mirage - 4.95 l/100km
Hyundai I10 - 5.88 l/100km
Hence the Hyundai i10 is burning 19% more fuel in the real world compared to the Mitsubishi Mirage 1.0.
Vehicle Mass and poor aero are the culprits.
The lightest i10 version is some 88 kG heavier than the Mirage 1.0.
https://www.spritmonitor.de/en/overv...73&powerunit=2
https://www.spritmonitor.de/en/overv...73&powerunit=2