You may predict the mileage on Cadillac SRX with whole tank. In 2007 it seemed ok to put 76 liters in vehicle. Cadillac used to install 76 liters tanks in SRX produced in 2007.
And the bad side of 2007 Cadillac SRX with this tank is expenses during filling up.
You can put quite a lot of petrol to Cadillac SRX tank on the gas station.
There are both pros and cons in Cadillac’s big or small tanks. For SRX it’s ok to have 76 liters reserve of fuel.