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Shiteworthiness mathematical formula required


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Posted

I've been trying to make comparisons between my new and old cars, and how much they actually cost me, without much success (because I'm a simple soul.)  I also have Father Carlo regularly laughing at me at my 405s 28mpg when he gets 60mpg from his Citigo, although he takes a £3k hit every three years when he trades in for a new one.

 

So I'm trying to work out a mathematical formula I can apply to basically three different scenarios, and work out which one is actually cheapest over, say, a three year period.

 

Scenario 1: My old 405, cost £300, regular maintenance, tax, repairs, fuel etc, no depreciation

 

Scenario 2: Our new Kia Picanto, bought on a PCP with a deposit, regular finance payments, maintenance & fuel obviously, probably to be given back to Kia after 3 years

 

Scenario 3: Father Carlo's Citigo, bought new for cash, all regular stuff etc, chopped in every three years for a new one

 

Three obviously very different ways of running a car, complicated by the fact there's finance involved.  

 

Anyone any good at this shit?

Posted

You also need to factor in the miles driven and the interest rates on the finance.

Then it's a matter of adding up figures.

No easy way, you need to calculate it on foot.

 

It's futile though, because Scenario 1 is the cheapest by factor ten at least.

Posted

If he's only taking a three grand hit in three years then i dont think that's bad, you certainly couldn't hire a car for that.

As for costings I wouldn't bother just enjoy what you like

Posted

I like it + fuck no, I wont do what you tell me= old shittaz is for winnerz!

Posted

Don't forget to take into account the 20p in your 405's handbrake.

Posted

New Car

 

30k @ 60mpg is £2565

RFL/TAX £0.00

Service £300.00

Tyres £400.00

Finance £5400 (based on 3 years @ £150 PCM)

Initial deposit?? £200-2000

Total £8865-10465 

 

Shite car

 

30k @ 28mpg is £5464

RFL/ TAX £750

Service £150

Tyres £100

Finance £0000

Initial deposit? £0000

Total £6464

 

Ok- so this is a little* biased, tyres and service are low, and I've not included MOT costs etc, but on ya brand new car, unless you're purchasing it outright, you've got to keep it in good nick before you give it back, fair wear and tear is ok but lets be honest, most people i know who've got a car on the 'knock' always spend a couple hundred quid on repairs before it goes back.. excess mileage?? some are 15-20 PPM

 

one to mention was my father in law- he had a bmw 6 series convertible, it had to go back with runflat tyres which were so many MM of life left, ie he couldn't take it back with just legal tyres and unknown brand- tyres cost him several hundred pounds for two rear tyres, and this was his 2nd set! 

 

saying all this I've just taken delivery of a new car, which I'll never own and is costing a few quid just for the pleasure of driving it around for two years!

Posted

I did this a few years back trying to justify buying a Jag. Fuel prices are a bit old but you get the drift.

 

 

I was bored at work just now and reading about the Jag the Betaboy2.0 had bought. It got me thinking about how long it would take you to spend the same money running an old Jag as you would to buy a nice newish modern diseisel simply on fuel consumption.

So I am looking at a Jag XJ8 with an average fuel consumption of 20.25 compared to an Audi A3 dizzler with an average fuel consumption of 42.9 (both figs pulled from fuelly, not sure how accurate they are). I am looking at the prices for a 2010 A3 and I am settling on a price of £15,000 for the car. I am going to spend £1k on the Jag (the one I looked at the other week had been serviced, new chain and gearbox, no rust, 80k and was £900).

Based on current fuel prices of £1.300 for petrol and £1.357 for diesel this works out per gallon at £5.91 and £6.17 per gallon respectively. If you were to do 10,000 miles a year in each car the Jaguar owner would spend £2,918.38 and the Audi driver £1,437.96 per annum on fuel.

If you add this to the cost of the cars and it would take nearly 10 years for the Jaguar drivers total spend on the car and the fuel to exceed that of the Audi driver. At the end of the 9th year you would have spent £27,265 on the Jag compared to £27,942 on the Audi.

But wait I hear you say, what about the other costs of running a big Jag. It will rust and break down so will probably cost more in repairs. What then?

Well, adding into the fact that most people would not keep their Audi more than 5 years, they would be liable to sell the Audi for about £6.5k (about the right price for an 05 or 06 Audi A3?) and buy a new at £15k again it would mean after 10 years of car ownership the Audi driver would have spent £37,880 on cars and fuel compared to the Jaguar drivers £30,184 making a saving of £7,696 which should probably cover a majority of the repairs. On top of that the Audi driver would be due to spend another £8,500 on a new car to replace his 2nd Audi with a new one, spending another £8.5k making the saving for the Jag driver £16,196 before the process starts again.

Out of both of these cars which one would you rather have? Assuming my maths is right* I am planning on showing this to as many people who drive Audi A3s as possible.


*I think its right.........

 
  • Like 2
Posted

Yes. The above is correct. Even though maths dude is pushing out a silent but deadly

  • Like 1
Posted

The complicated maths is pretty much just adding up.  stephen01's post seems to cover it, just add to that if you think your costs would be any different.

 

If your shite car is a Lotus Eclat or Renault Espace you need to put in a few lots of £500 for routine maintenance, if your car is a Nissan Micra then don't add anything at all.  If it's something like a Porsche 924 then you can also factor in it might have made £500 when you come to sell it.  Come to think of it, there's nothing at the end of his calculations for selling the car at the end - because at the end of a finance deal you end up with no car so put in a few hundred quid for selling your snotter.  I've just had a look back and there's nothing for initial purchase of the snotter either.

 

The difference is that with a new car you know exactly what you'll be paying out every month, with some disgusting turd of an old car it's more of a gamble.  There are things you can do to stack the odds by purchasing wisely, but that's it.  Mrs_garethj's S Type is a borderline old car but last year when it went badly wrong I could have leased 3 new XFs for the same money.

Posted

The only shit car equation I am familiar with is

 

past 11pm + 3 beers minimum + ebay - woman gone to bed  = shite bought

  • Like 2

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