If OP is asking if you can change the display on the gauges to display MPG and L/100km, it's a no since Canada Corolla's have metric gauges and US Corolla's have imperial gauges. Although, an easy formula that I use to convert MPG to L/100km or km/100km is MPG = 235/L per 100km. If you want the opposite, just switch MPG and L/100km in the formula.
i.e. My gauges tell me that I get 7.9L/100km: 29.7 MPG=235/7.9L per 100km