Last time I filled up I had to pay inside. I was filling up before a long trip, and it took 12.5 gallons. The attendant said "you must have been almost empty!" and when I told him it was a 20 gallon tank, he told me that my car was "pretty much a truck." Made my day.

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1992 300D 2.5T 249k - Parked with a bad transmission
1981 300SD 142k - Daily driver