ive fit 8.65 gallons in my tank. i was praying to make it to the dysarts along the way home after taking a co-worker home. i delivered all night and damn near was out of gas, but we got busy so i kept pluckin along. i heard somewhere that someone was able to fit 8.77 gallons in their aspire, but i reckon every car is different. even if they were all the same model.