This is a theme which seems to come up every 2 or 3 months, so I've take the liberty of posting my answer from the last thread, in order to expand on the theme a bit.
"Some typical ownership figures based on something like a pa28/172 etc on a C of A, flown for 100 hrs P/A, kept outside (don't even ask about hangerage) in the SE of England, are as follows:
Parking (£200 pcm) £2,400 P/A (hangerage £450pcm or £5,400pa!)
Insurance £1,500 P/A
Maintenance (1 x annual) £3,000
(1 x 50 hr check) £400
Engine fund (£7.50ph X 100hrs) £750
fuel (£1.50pl x 35 x 100) £5,250
Total £12,900 P/A
Which equals £129.00 ph!
However, if you fly 200hrs P/A, the sum is more like this:
Parking (£200 pcm) £2,400 P/A
Insurance £1,500 P/A
Maintenance (1 x annual) £3,000
(3 x 50 hr check) £1,200
Engine fund (£7.50ph X 200hrs) £1,500
fuel (£1.50pl x 35 x 200) £10,500
Total £20,100 P/A
Which equals £100.50 P/H!
Clearly there is an economy of scale to be had, whereby the more you fly, the cheaper it gets on an hourly basis. I have also ignored the cost of capital, as the cost/benefit breakdown of buying something new(expensive, but small bills) verses something old(cheap, but with big maintenance bills) is a matter of personal choice. However, you will have to decide if flying around in a 'shed' is something you are prepared to do, and also whether you are happy with regular periods of downtime as a result.
These figures are ball park figures based on a C of A A/C, maintained to the easa version of a public transport C of A, and also assumes that you dont bend it and nothing goes wrong with the avionics or paint or airframe....etc."
Have a go with fiddling with these figures and then factor in the abuse that a rental machine gets from flying school use and occasional renters, which will result in the odd big bill; I wouldn't do it!