Since my last service by the agents, my GSA seems to think my fuel tank holds about 50 litres. My initial range shows upwards of 750km, and I run out of fuel with the range still showing 100-odd km. Sometimes the low fuel warning light comes on about 15km before I run out of fuel, mostly there is no low fuel warning. I can avoid running out of fuel by using the odo to watch km-since-full, but is there any remedy for the faulty range prediction?