I came across this Kijiji Ad today, in which the seller states that his 1984 Mercedes 300D will travel 500 kms on $20 dollars of fuel.

I did the math, and at the local price of diesel, ($1.09.4 per litre) $20 will buy you 18.28 litres. Dividing by 4.546 litres per Canadian gallon gives you 4.02 gallons of diesel.

500 kms is equal to 310 miles. So 310 miles per 4.02 gallons works out to just over 77 miles per gallon!

Has anybody on this forum been able to achieve fuel economy remotely approaching this? Even downhill, and with a tail-wind?

I'm half considering purchasing the car, and then suing the seller for misrepresentation.