My calculations are the same as yours. When you take into account the 'total cost of ownership', there are no savings in diesel, and a whole lot of potential costs if things go wrong (fuel pump + injectors).
With the modern common rail diesels, buy new and sell before the warrantee runs out.
If you want to buy second hand, buy petrol.
Wont be selling my 4.0 V6 Hilux any time soon.
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