Agree with Tombie2 and Ron - I have not worked it out in detail recently, but even using the best possible figures, unless you do a very high mileage, it is very hard to make fuel get anywhere near 50% of costs, and in most cases it is less than 30%.
In almost every case, the biggest (often over 50%) cost is depreciation plus cost of capital (either opportunity cost or borrowing cost), closely followed by insurance and taxes and then maintenance and repairs before you get to fuel!
Because of this the most economical motoring will come from buying second hand and keeping your car for as long as possible - and making a good choice of car. Fuel consumption is a relatively minor cost, and although it looks as if the only way is up, it is difficult to see it getting to be the major cost. Also note that recent interest rate increases have lifted the cost of capital by probably as much as the fuel costs have gone up for a lot of owners.
John
John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
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